Civil 3D API

https://help.autodesk.com/cloudhelp/2021/ENU/Civil3D-API/
Admin
Civil 3D API is Autodesk's application programming interface for the Civil 3D software, providing...
Tokens:1,161,692
Snippets:10,822
Trust Score:9.7
Update:3 months ago
Show doc for...
Tokens:
Raw
### Using StartingStation in Profile Creation

Source: https://help.autodesk.com/cloudhelp/2021/ENU/Civil3D-API/files/html/09924487-3529-2d05-b39b-22daeccadcd0.htm

Example demonstrating the use of StartingStation to define the start point of a profile tangent.

```C#
 1// Now add the entities that define the profile.
 2Profile oProfile = ts.GetObject(oProfileId, OpenMode.ForRead) as Profile;
 3
 4Point3d startPoint = new Point3d(oAlignment.StartingStation, -40, 0);
 5Point3d endPoint = new Point3d(758.2, -70, 0);
 6ProfileTangent oTangent1 = oProfile.Entities.AddFixedTangent(startPoint, endPoint);
 7
 8startPoint = new Point3d(1508.2, -60.0, 0);
 9endPoint = new Point3d(oAlignment.EndingStation, -4.0, 0);
10ProfileTangent oTangent2 = oProfile.Entities.AddFixedTangent(startPoint, endPoint);                
11
12oProfile.Entities.AddFreeSymmetricParabolaByLength(oTangent1.EntityId, oTangent2.EntityId, VerticalCurveType.Sag, 900.1, true);
```

--------------------------------

### StartingStation Property

Source: https://help.autodesk.com/cloudhelp/2021/ENU/Civil3D-API/files/html/93167a1b-574f-80f0-d734-2875d4e3948a.htm

Gets the profile starting station.

```APIDOC
## StartingStation Property

### Description
Gets the starting station of a profile.

### Syntax
#### C#
```csharp
public double StartingStation { get; }
```

#### Visual Basic
```vb
Public ReadOnly Property StartingStation As Double
	Get
```

#### Visual C++
```cpp
public:
property double StartingStation {
	double get ();
}
```

### Namespace
Autodesk.Civil.DatabaseServices

### Assembly
AeccDbMgd (in AeccDbMgd.dll) Version: 13.3.1717.0
```

--------------------------------

### Alignment.Create Usage Example

Source: https://help.autodesk.com/cloudhelp/2021/ENU/Civil3D-API/files/html/858c3c00-a967-985f-8c9a-750447e4c9e7.htm

Example showing how to create an alignment using existing styles and a null site.

```C#
1// Uses an existing Alignment Style and Label Set Style named "Standard" (for example, from
2// the Civil 3D (Imperial) NCS.dwt template.  This call will fail if the named styles
3// don't exist.  
4// Uses layer 0, and no site (null)
5ObjectId testAlignmentID = Alignment.Create( doc, "New Alignment", null, "0", "Standard", "Standard");
```

--------------------------------

### CreateFromDEM Implementation Example

Source: https://help.autodesk.com/cloudhelp/2021/ENU/Civil3D-API/files/html/b69715e8-f944-6d01-87ef-087510b4072a.htm

Example demonstrating the usage of CreateFromDEM within a command method, including transaction management and error handling.

```C#
 1/// <summary>
 2/// Creates a new surface from a DEM file.
 3/// </summary>
 4/// <remarks></remarks>
 5[CommandMethod("CreateFromDEM")]
 6public void CreateFromDEM()
 7{
 8    using (Transaction ts = Application.DocumentManager.MdiActiveDocument.Database.TransactionManager.StartTransaction())
 9    {
10        // Prompt user for a DEM file:
11        PromptFileNameResult demResult = editor.GetFileNameForOpen("Enter the path and name of the DEM file to import:");
12        editor.WriteMessage("Importing: {0}", demResult.StringResult);
13
14        try
15        {
16            // surface style #3 is "slope banding" in the default template
17            ObjectId surfaceStyleId = doc.Styles.SurfaceStyles[3];
18            ObjectId gridSurfaceId = GridSurface.CreateFromDEM(demResult.StringResult, surfaceStyleId);
19            editor.WriteMessage("Import succeeded: {0} \n", gridSurfaceId.ToString());
20        }
21        catch (System.Exception e)
22        {
23            // handle bad file data or other errors
24            editor.WriteMessage("Import failed: {0}", e.Message);
25        }
26
27        // commit the transaction
28        ts.Commit();
29    }
30}
```

--------------------------------

### RaiseSurface Usage Example

Source: https://help.autodesk.com/cloudhelp/2021/ENU/Civil3D-API/files/html/54cf6edb-cecb-d8db-280c-990e8fb22ca4.htm

Example demonstrating how to create a surface, retrieve its properties, and apply an elevation change.

```C#
 1// Setup: create a new, random surface
 2// 
 3ObjectId surfaceId = TinSurface.Create(_acaddoc.Database, "Example Surface");
 4TinSurface surface = surfaceId.GetObject(OpenMode.ForWrite) as TinSurface;
 5Point3dGenerator p3dgen = new Point3dGenerator();
 6Point3dCollection locations = p3dgen.AsPoint3dCollection();
 7surface.AddVertices(locations);
 8
 9// Get the surface mean elevation, then raise the surface, and
10// check that the elevation has been raised.                   
11// 
12GeneralSurfaceProperties surfaceProperties = surface.GetGeneralProperties();
13write("Surface mean elevation before raise: " + surfaceProperties.MeanElevation + "\n");
14double deltaElevation = 10.0;
15surface.RaiseSurface(deltaElevation);
16surfaceProperties = surface.GetGeneralProperties();
17write("Surface mean elevation after raise: " + surfaceProperties.MeanElevation + "\n");
```

--------------------------------

### Add CogoPoint Examples

Source: https://help.autodesk.com/cloudhelp/2021/ENU/Civil3D-API/files/html/91c7c61b-892a-e864-1dd1-d0dabb46c03b.htm

Examples demonstrating how to add CogoPoints to the CogoPointCollection with varying parameter matching settings.

```C#
 1// _civildoc is the active CivilDocument instance.
 2CogoPointCollection cogoPoints = _civildoc.CogoPoints;
 3Point3d location = new Point3d(100.0, 150.0, 50.0);
 4bool useDescriptionKey = true;
 5bool matchOnParameters = true;
 6// Parameters in the description key are matched and used.
 7cogoPoints.Add(location, "Sample COGO Point", useDescriptionKey, matchOnParameters);
 8
 9// Parameters in the description key are not matched.
10location = new Point3d(120.0, 125.0, 55.0);
11matchOnParameters = false;
12cogoPoints.Add(location, "Another Sample COGO Point", useDescriptionKey, matchOnParameters);
```

```VB.NET
 1' _civildoc is the active CivilDocument instance.
 2Dim cogoPoints As CogoPointCollection = _civildoc.CogoPoints
 3Dim location As New Point3d(100.0, 150.0, 50.0)
 4Dim useDescriptionKey As Boolean = True
 5Dim matchOnParameters As Boolean = True
 6' Parameters in the description key are matched and used.
 7cogoPoints.Add(location, "Sample COGO Point", useDescriptionKey, matchOnParameters)
 8
 9' Parameters in the description key are not matched.
10location = New Point3d(120.0, 125.0, 55.0)
11matchOnParameters = False
12cogoPoints.Add(location, "Another Sample COGO Point", useDescriptionKey, matchOnParameters)
```

--------------------------------

### Add CogoPoints Example

Source: https://help.autodesk.com/cloudhelp/2021/ENU/Civil3D-API/files/html/8a7a5e83-2c53-34f7-c9e2-36e9ae8e3ce1.htm

Examples demonstrating how to add a collection of points to the CogoPointCollection.

```C#
1// _civildoc is the active CivilDocument instance.
2CogoPointCollection cogoPoints = _civildoc.CogoPoints;
3Point3dCollection points = getRandomPoints();   // Returns collection of random generated points.
4cogoPoints.Add(points, "Sample COGO Point");
```

```VB.NET
1' _civildoc is the active CivilDocument instance.
2Dim cogoPoints As CogoPointCollection = _civildoc.CogoPoints
3Dim points As Point3dCollection = getRandomPoints()
4' Returns collection of random generated points.
```

--------------------------------

### CreateOffsetAlignment Usage Example

Source: https://help.autodesk.com/cloudhelp/2021/ENU/Civil3D-API/files/html/dbf07a10-0e0e-dcc3-42c6-5a0f990b7178.htm

Example demonstrating the creation of a new alignment with a specified offset distance.

```csharp
1// Creates a new alignment with an offset of 10:
2ObjectId offsetAlignmentID = Alignment.CreateOffsetAlignment("New Offset", alignID, 10, styleId);
```

--------------------------------

### StartStation Property

Source: https://help.autodesk.com/cloudhelp/2021/ENU/Civil3D-API/files/html/23294205-6c93-c846-8874-945821cb1241.htm

Gets the alignment sub-entity starting station.

```APIDOC
## StartStation Property

### Description
Gets the alignment sub-entity starting station.

### Syntax
#### C#
```csharp
public double StartStation { get; }
```

#### Visual Basic
```vb
Public ReadOnly Property StartStation As Double
	Get
```

#### Visual C++
```cpp
public:
property double StartStation {
	double get ();
}
```

### Namespace
Autodesk.Civil.DatabaseServices

### Assembly
AeccDbMgd (in AeccDbMgd.dll) Version: 13.3.1717.0
```

--------------------------------

### LabelAtStartStation Property Syntax

Source: https://help.autodesk.com/cloudhelp/2021/ENU/Civil3D-API/files/html/2beb6fe0-8dfa-c299-3a7c-3bf068a3f369.htm

Defines the property for getting or setting the label visibility at the start station.

```C#
public bool LabelAtStartStation { get; set; }
```

```Visual Basic
Public Property LabelAtStartStation As Boolean
	Get
	Set
```

```Visual C++
public:
property bool LabelAtStartStation {
	bool get ();
	void set (bool value);
}
```

--------------------------------

### AddLinePipe Usage Example

Source: https://help.autodesk.com/cloudhelp/2021/ENU/Civil3D-API/files/html/ef5e51e3-c20a-f2b6-1840-bab775a2d88f.htm

Example demonstrating how to retrieve a pipe network, select a part family, and add a new pipe using the AddLinePipe method.

```C#
 1ObjectIdCollection oIdCollection = doc.GetPipeNetworkIds();
 2// Get the first network in the document
 3ObjectId objId = oIdCollection[0];
 4Network oNetwork = ts.GetObject(objId, OpenMode.ForWrite) as Network;
 5ed.WriteMessage("Pipe Network: {0}\n", oNetwork.Name);
 6// Go through the list of part types and select the first pipe found
 7ObjectId pid = oNetwork.PartsListId;
 8PartsList pl = ts.GetObject(pid, OpenMode.ForWrite) as PartsList;
 9
10ObjectId oid = pl["Concrete Pipe"];
11PartFamily pfa = ts.GetObject(oid, OpenMode.ForWrite) as PartFamily;
12ObjectId psize = pfa[0];
13LineSegment3d line = new LineSegment3d(new Point3d(30, 9, 0), new Point3d(33, 7, 0));
14ObjectIdCollection col = oNetwork.GetPipeIds();
15ObjectId oidNewPipe = ObjectId.Null;
16
17oNetwork.AddLinePipe(oid, psize, line, ref oidNewPipe, false);
18Pipe oNewPipe = ts.GetObject(oidNewPipe, OpenMode.ForRead) as Pipe;
19ed.WriteMessage("Pipe created: {0}\n", oNewPipe.DisplayName);
20ts.Commit();
```

--------------------------------

### SetElevationBySurface Usage Examples

Source: https://help.autodesk.com/cloudhelp/2021/ENU/Civil3D-API/files/html/2f371620-ca62-0491-5eeb-f131263c218b.htm

Examples demonstrating how to set elevations for single and multiple CogoPoints using a surface.

```C#
 1// _civildoc is the active CivilDocument instance.
 2CogoPointCollection cogoPoints = _civildoc.CogoPoints;
 3ObjectId pointId = cogoPoints.Add(new Point3d(100, 100, 0));
 4
 5// Set elevation for a single point:
 6if (ObjectId.Null == cogoPoints.SetElevationBySurface(pointId, tinSurfaceId))
 7{ write("SetElevationBySurface failed, perhaps the point is outside the surface?\n"); }
 8else
 9{
10    CogoPoint point = pointId.GetObject(OpenMode.ForRead) as CogoPoint;
11    write("Point's new elevation from surface: " + point.Elevation);
12}
13
14// Create multiple points to set elevation for:
15Point3dCollection pointCollection = new Point3dCollection();
16pointCollection.Add(new Point3d(100, 110, 0));
17pointCollection.Add(new Point3d(110, 100, 0));
18ObjectIdCollection pointIdCollection = cogoPoints.Add(pointCollection, "Example Points");
19List<ObjectId> pointIdList = new List<ObjectId>();
20foreach (ObjectId id in pointIdCollection) { pointIdList.Add(id); }
21
22// Set elevation for multiple points: 
23ObjectIdCollection successfullySetPoints = cogoPoints.SetElevationBySurface(pointIdList, tinSurfaceId);
24write(String.Format("Successfully set elevation for {0} of {1} points.\n",
25    pointIdCollection.Count, successfullySetPoints.Count));
```

```VB.NET
 1' _civildoc is the active CivilDocument instance.
 2Dim cogoPoints As CogoPointCollection = _civildoc.CogoPoints
 3Dim pointId As ObjectId = cogoPoints.Add(New Point3d(100, 100, 0))
 4
 5' Set elevation for a single point:
 6If ObjectId.Null = cogoPoints.SetElevationBySurface(pointId, tinSurfaceId) Then
 7    write("SetElevationBySurface failed, perhaps the point is outside the surface?" & vbLf)
 8Else
 9    Dim point As CogoPoint = TryCast(pointId.GetObject(OpenMode.ForRead), CogoPoint)
10    write("Point's new elevation from surface: " + point.Elevation)
11End If
12
13' Create multiple points to set elevation for:
14Dim pointCollection As New Point3dCollection()
15pointCollection.Add(New Point3d(100, 110, 0))
16pointCollection.Add(New Point3d(110, 100, 0))
17Dim pointIdCollection As ObjectIdCollection = cogoPoints.Add(pointCollection, "Example Points")
18Dim pointIdList As New List(Of ObjectId)()
19For Each id As ObjectId In pointIdCollection
20    pointIdList.Add(id)
21Next
22
23' Set elevation for multiple points: 
24Dim successfullySetPoints As ObjectIdCollection = cogoPoints.SetElevationBySurface(pointIdList, tinSurfaceId)
```

--------------------------------

### Contains Method Usage Examples

Source: https://help.autodesk.com/cloudhelp/2021/ENU/Civil3D-API/files/html/74ed714e-f112-00db-b0ea-f4fa593d29bd.htm

Examples demonstrating how to check for a point number within a CogoPointCollection.

```csharp
1// _civildoc is the active CivilDocument instance.
2CogoPointCollection cogoPoints = _civildoc.CogoPoints;
3
4uint pointNumber = 100;
5_editor.WriteMessage("\nDocument contains point #{0}: {1}",
6    pointNumber, cogoPoints.Contains(pointNumber));
```

```vbnet
1' _civildoc is the active CivilDocument instance.
2Dim cogoPoints As CogoPointCollection = _civildoc.CogoPoints
3
4Dim pointNumber As UInteger = 100
```

--------------------------------

### StartStation Property

Source: https://help.autodesk.com/cloudhelp/2021/ENU/Civil3D-API/files/html/d877d9d9-8ad5-fd42-8676-838e42f83bb6.htm

Gets the start station of the SuperelevationCurve.

```APIDOC
## StartStation Property

### Description
Gets the start station of the SuperelevationCurve.

### Syntax
#### C#
```csharp
public double StartStation { get; }
```

#### Visual Basic
```vb
Public ReadOnly Property StartStation As Double
	Get
```

#### Visual C++
```cpp
public:
property double StartStation {
	double get ();
}
```

--------------------------------

### Create and Configure CodeSetStyle

Source: https://help.autodesk.com/cloudhelp/2021/ENU/Civil3D-API/files/html/501fabed-625f-8266-c1f3-92a3a3dc00ed.htm

Example demonstrating how to create a new CodeSetStyle and add items to it using existing styles.

```C#
1// Create a new style set using our previously created styles.
2objId = doc.Styles.ShapeStyles.Add("Style Set 1");
3CodeSetStyle oCodeSetStyle = ts.GetObject(objId, OpenMode.ForWrite) as CodeSetStyle;
4oCodeSetStyle.Add("TOP", doc.Styles.LinkStyles["Style2"]);
5oCodeSetStyle.Add("BASE", doc.Styles.ShapeStyles["Style3"]);
6
7ts.Commit();
```

--------------------------------

### StartStation Property

Source: https://help.autodesk.com/cloudhelp/2021/ENU/Civil3D-API/files/html/b9d7ea8e-ad06-3c18-8759-0690f437f467.htm

Gets or sets the start station for this CorridorSlopePattern.

```APIDOC
## Property: StartStation

### Description
Gets or sets the start station for this CorridorSlopePattern.

### Syntax
#### C#
```csharp
public double StartStation { get; set; }
```

#### Visual Basic
```vb
Public Property StartStation As Double
```

#### Visual C++
```cpp
public:
property double StartStation {
	double get ();
	void set (double value);
}
```

### Exceptions
| Exception | Condition |
| --- | --- |
| System.ArgumentException | Thrown when setting to a new station which is 1. Out of the Baseline's range. 2. Greater than or Equal to the EndStation of the current CorridorSlopePattern. |
```

--------------------------------

### StartStation Property

Source: https://help.autodesk.com/cloudhelp/2021/ENU/Civil3D-API/files/html/69058151-5f15-b0c7-99b4-ebe255ca4874.htm

Gets the curve start station for a ProfileEntity.

```APIDOC
## StartStation Property

### Description
Gets the curve start station.

### Syntax
#### C#
```csharp
public double StartStation { get; }
```

#### Visual Basic
```vb
Public ReadOnly Property StartStation As Double
	Get
```

#### Visual C++
```cpp
public:
property double StartStation {
	double get ();
}
```
```

--------------------------------

### CreateByLayout Usage Example

Source: https://help.autodesk.com/cloudhelp/2021/ENU/Civil3D-API/files/html/d77bd006-2e9c-581b-7a8f-21ee24aa1f26.htm

Demonstrates creating a profile using existing alignment properties and standard styles. Ensure the 'Standard' style exists in the document before execution.

```C#
 1Alignment oAlignment = ts.GetObject(alignID, OpenMode.ForRead) as Alignment;
 2
 3// use the same layer as the alignment
 4ObjectId layerId = oAlignment.LayerId;
 5// get the standard style and label set 
 6// these calls will fail on templates without a style named "Standard"
 7ObjectId styleId = doc.Styles.ProfileStyles["Standard"];
 8ObjectId labelSetId = doc.Styles.LabelSetStyles.ProfileLabelSetStyles["Standard"];
 9
10ObjectId oProfileId = Profile.CreateByLayout("My Profile", alignID, layerId, styleId, labelSetId);
```

--------------------------------

### SetUDPValue Implementation Example

Source: https://help.autodesk.com/cloudhelp/2021/ENU/Civil3D-API/files/html/295c1454-8e7d-e615-49a4-db83ec5ead88.htm

Example demonstrating the creation of a UDP classification, defining an integer UDP, and updating its value on a CogoPoint.

```C#
 1// Check if classification already exists. If not, create it.
 2// 
 3const string sampleClassificationName = "SampleClassification";
 4UDPClassification sampleClassification = null;
 5if (_civildoc.PointUDPClassifications.Contains(sampleClassificationName))
 6{
 7    sampleClassification = _civildoc.PointUDPClassifications[sampleClassificationName];
 8    // sampleClassification = _civildoc.PointUDPClassifications["Inexistent"];  // Throws exception.
 9}
10else
11{
12    sampleClassification = _civildoc.PointUDPClassifications.Add(sampleClassificationName);
13    // sampleClassification = _civildoc.PointUDPClassifications.Add("Existent"); // Throws exception.
14}
15
16// Create new UDP.
17// 
18AttributeTypeInfoInt typeInfoInt = new AttributeTypeInfoInt("Sample_Int_UDP");
19typeInfoInt.Description = "Sample integer User Defined Property";
20typeInfoInt.DefaultValue = 15;
21typeInfoInt.LowerBoundValue = 0;
22typeInfoInt.UpperBoundValue = 100;
23typeInfoInt.LowerBoundInclusive = true;
24typeInfoInt.UpperBoundInclusive = false;
25UDPInteger integerUDP = sampleClassification.CreateUDP(typeInfoInt);
26
27using (Transaction tr = startTransaction())
28{
29    // Assign classification to Point Group. In this case, we use
30    // the "_AllPoints" point group so we can use it with all points.
31    // 
32    ObjectId allPointsId = _civildoc.PointGroups.AllPointsPointGroupId;
33    PointGroup allPoints = allPointsId.GetObject(OpenMode.ForRead) as PointGroup;
34    allPoints.UseCustomClassification(sampleClassificationName);
35
36    ObjectId pointId = _civildoc.CogoPoints.GetPointByPointNumber(1);
37    CogoPoint point = pointId.GetObject(OpenMode.ForWrite) as CogoPoint;
38    int val = point.GetUDPValue(integerUDP);
39    // val should be default (15)
40    write(String.Format("Point {0} Sample_Int_UDP={1}", point.PointNumber, val));
41
42    point.SetUDPValue(integerUDP, 0); // Works! Lower bound included.
43    // point.SetUDPValue(integerUDP, 100); // Throws! Upper bout not included.
44
45    tr.Commit();
46}
```

```VB.NET
1!ERROR: See log file!
```

--------------------------------

### Add Method Usage Example

Source: https://help.autodesk.com/cloudhelp/2021/ENU/Civil3D-API/files/html/06c40d96-fad7-de52-bad9-a988221100a7.htm

Demonstrates checking for an existing style and creating a new one if it is not found.

```C#
 1// Select a surface style to use.
 2// If the desired style doesn't exist, create it.
 3ObjectId surfaceStyleId = ObjectId.Null;
 4try
 5{
 6    surfaceStyleId = doc.Styles.SurfaceStyles["Slope Banding (2D)"];
 7}
 8catch (System.ArgumentException e)
 9{
10    surfaceStyleId = doc.Styles.SurfaceStyles.Add("Slope Banding (2D)");
11}
```

--------------------------------

### AlignmentArc.StartDirection Property

Source: https://help.autodesk.com/cloudhelp/2021/ENU/Civil3D-API/files/html/eea7d158-ad2b-cb28-4d78-10576509178f.htm

Gets the start direction of the AlignmentArc as a double value.

```APIDOC
## Property: StartDirection

### Description
Gets the AlignmentArc's start direction.

### Syntax
#### C#
```csharp
public double StartDirection { get; }
```

#### Visual Basic
```vb
Public ReadOnly Property StartDirection As Double
```

### Exceptions
- **System.InvalidOperationException**: Thrown when the property gets an invalid value according to the entity's constraint type.
```

--------------------------------

### GradeIn Property

Source: https://help.autodesk.com/cloudhelp/2021/ENU/Civil3D-API/files/html/ddaf99be-3e0a-72f9-e7bd-7e727c1526c0.htm

Gets the grade at the start point of a ProfileCircular object.

```APIDOC
## GradeIn Property

### Description
Gets the grade at the start point of a ProfileCircular object.

### Syntax
#### C#
```csharp
public double GradeIn { get; }
```

#### Visual Basic
```vb
Public ReadOnly Property GradeIn As Double
	Get
```

#### Visual C++
```cpp
public:
property double GradeIn {
	double get ();
}
```

### Return Value
- **Type**: double
- **Description**: The grade at the start point.
```

--------------------------------

### Create TIN Surface from File

Source: https://help.autodesk.com/cloudhelp/2021/ENU/Civil3D-API/files/html/7180f40a-89d3-a5f2-499c-e81149683485.htm

Example demonstrating how to create a TinSurface from a .tin file within a transaction.

```C#
 1[CommandMethod("CreateFromTIN")]
 2public void CreateFromTin()
 3{
 4    using (Transaction ts = Application.DocumentManager.MdiActiveDocument.Database.TransactionManager.StartTransaction())
 5    {
 6        // Example TIN surface from Civil Tutorials:
 7        string tinFile = @"C:\Program Files\Autodesk\AutoCAD Civil 3D 2012\Help\Civil Tutorials\Corridor surface.tin";
 8        try
 9        {
10            Database db = Application.DocumentManager.MdiActiveDocument.Database;
11
12            // surface style 3 is "slope banding" in the default template
13            ObjectId surfaceStyleId = doc.Styles.SurfaceStyles[3];
14            ObjectId tinSurfaceId = TinSurface.CreateFromTin(db, tinFile);
15            editor.WriteMessage("Import succeeded: {0} \n {1}", tinSurfaceId.ToString(), db.Filename);
16        }
17        catch (System.Exception e)
18        {
19            // handle bad file path 
20            editor.WriteMessage("Import failed: {0}", e.Message);
21        }
22
23        // commit the transaction
24        ts.Commit();
25    }
26}
```

--------------------------------

### StartStation Property

Source: https://help.autodesk.com/cloudhelp/2021/ENU/Civil3D-API/files/html/c98dca79-f383-13e6-4b97-27d61762ff72.htm

Gets or sets the start station of the baseline range.

```APIDOC
## StartStation Property

### Description
Gets or sets the start station of the baseline range.

### Syntax
#### C#
public double StartStation { get; set; }

#### Visual Basic
Public Property StartStation As Double

#### Visual C++
public:
property double StartStation {
	double get ();
	void set (double value);
}
```

--------------------------------

### StartOffset Property

Source: https://help.autodesk.com/cloudhelp/2021/ENU/Civil3D-API/files/html/9bafcf9f-3f6e-ed5d-dc1a-4baf94c35da7.htm

Gets the offset of the starting point for the pipe object.

```APIDOC
## StartOffset Property

### Description
Gets the offset of the starting point for the pipe object. This value is obtained from the alignment referenced by the pipe object, and flow direction is not considered.

### Syntax
#### C#
```csharp
public double StartOffset { get; }
```

#### Visual Basic
```vb
Public ReadOnly Property StartOffset As Double
	Get
```

#### Visual C++
```cpp
public:
property double StartOffset {
	double get ();
}
```
```

--------------------------------

### Create Alignment Example

Source: https://help.autodesk.com/cloudhelp/2021/ENU/Civil3D-API/files/html/bb5c29ce-e1bf-917c-aa1e-902777a8f20d.htm

Demonstrates initializing PolylineOptions and creating an Alignment. Ensure the specified styles exist in the drawing template before execution.

```C#
 1// create some polyline options for creating the new alignment
 2PolylineOptions plops = new PolylineOptions();
 3plops.AddCurvesBetweenTangents = true;
 4plops.EraseExistingEntities = true;
 5plops.PlineId = res.ObjectId;
 6
 7// uses an existing Alignment Style and Label Set Style named "Standard" (for example, from
 8// the Civil 3D (Imperial) NCS.dwt template.  This call will fail if the named styles
 9// don't exist.
10ObjectId testAlignmentID = Alignment.Create(doc, plops, "New Alignment", null, "0", "Standard", "Standard");
```

--------------------------------

### StartDirection Property

Source: https://help.autodesk.com/cloudhelp/2021/ENU/Civil3D-API/files/html/98332fef-1c2e-367f-e03e-e1c3ac1ff375.htm

Gets the direction value at the start point of the entity.

```APIDOC
## StartDirection Property

### Description
Gets the direction value at the start point of the AlignmentSubEntitySpiral.

### Syntax
#### C#
```csharp
public double StartDirection { get; }
```

#### Visual Basic
```vb
Public ReadOnly Property StartDirection As Double
```

#### Visual C++
```cpp
public:
property double StartDirection {
	double get ();
}
```

### Exceptions
- **System.InvalidOperationException**: Thrown when the property gets an invalid value according to the entity's constraint type.
```

--------------------------------

### Initialize FolderUtil Class

Source: https://help.autodesk.com/cloudhelp/2021/ENU/Civil3D-API/files/html/1e2ee606-cd32-9f72-211f-a2fed89bc039.htm

Syntax for creating a new instance of the FolderUtil class.

```C#
public FolderUtil()
```

```Visual Basic
Public Sub New
```

```Visual C++
public:
FolderUtil()
```

--------------------------------

### GradeIn Property

Source: https://help.autodesk.com/cloudhelp/2021/ENU/Civil3D-API/files/html/6933de41-d86f-4537-0f8b-65cb9d635937.htm

Gets the grade at the start point of the profile parabola.

```APIDOC
## GradeIn Property

### Description
Gets the grade at the start point of the profile parabola.

### Syntax
#### C#
public double GradeIn { get; }

#### Visual Basic
Public ReadOnly Property GradeIn As Double

#### Visual C++
public:
property double GradeIn {
	double get ();
}
```

--------------------------------

### StartPointElevation Property

Source: https://help.autodesk.com/cloudhelp/2021/ENU/Civil3D-API/files/html/269f1d1b-2d91-baf4-f7d7-795dbe3b49bd.htm

Gets the line segment starting point elevation.

```APIDOC
## Property: StartPointElevation

### Description
Gets the line segment starting point elevation.

### Syntax
#### C#
```csharp
public double StartPointElevation { get; }
```

#### Visual Basic
```vb
Public ReadOnly Property StartPointElevation As Double
	Get
```

#### Visual C++
```cpp
public:
property double StartPointElevation {
	double get ();
}
```

### Namespace
Autodesk.Civil.DatabaseServices

### Assembly
AeccDbMgd (in AeccDbMgd.dll) Version: 13.3.1717.0
```

--------------------------------

### UseCaseSensitiveMatch Property

Source: https://help.autodesk.com/cloudhelp/2021/ENU/Civil3D-API/files/html/e0d9bb80-5270-3731-6cb3-4e05141e0f6b.htm

Gets or sets whether string matching (for example, for Raw Descriptions) should be case-sensitive.

```APIDOC
## UseCaseSensitiveMatch Property

### Description
Gets or sets whether string matching (for example, for Raw Descriptions) should be case-sensitive.

### Syntax

#### C#
```csharp
public bool UseCaseSensitiveMatch { get; set; }
```

#### Visual Basic
```vb
Public Property UseCaseSensitiveMatch As Boolean
```

#### Visual C++
```cpp
public:
property bool UseCaseSensitiveMatch {
	bool get ();
	void set (bool value);
}
```
```

--------------------------------

### SetShowTooltips Usage Examples

Source: https://help.autodesk.com/cloudhelp/2021/ENU/Civil3D-API/files/html/4315c67b-ddb5-1314-df5e-8d4855083627.htm

Demonstrates how to update tooltip visibility for single points, multiple points with a single value, and multiple points with individual values.

```C#
 1// _civildoc is the active CivilDocument instance.
 2// 
 3CogoPointCollection cogoPoints = _civildoc.CogoPoints;
 4ObjectId pointId = cogoPoints.Add(new Point3d(100, 100, 50));
 5
 6// set value for single point
 7if (cogoPoints.SetShowTooltips(pointId, true) == ObjectId.Null)
 8    write("SetShowTooltips failed.\n");
 9
10Point3dCollection points = new Point3dCollection();
11points.Add(new Point3d(50, 50, 25));
12points.Add(new Point3d(200, 200, 15));
13ObjectIdCollection pointIds = cogoPoints.Add(points);
14List<ObjectId> pointIdList = GetListFromCollection(pointIds);
15
16// set multiple points to a single value
17ObjectIdCollection success = cogoPoints.SetShowTooltips(pointIdList, true);
18write(String.Format("SetShowTooltips success for {0} of {1} points\n",
19   success.Count, pointIdList.Count));
20
21List<bool> showTooltips = new List<bool>();
22for (int i = 0; i < pointIdList.Count; i++)
23    showTooltips.Add(i % 2 == 1);
24
25// set multiple points to multiple values
26success = cogoPoints.SetShowTooltips(pointIdList, showTooltips);
27write(String.Format("SetShowTooltips success for {0} of {1} points\n",
28   success.Count, pointIdList.Count));
```

```VB.NET
 1' _civildoc is the active CivilDocument instance.
 2'
 3Dim cogoPoints As CogoPointCollection = _civildoc.CogoPoints
 4Dim pointId As ObjectId = cogoPoints.Add(New Point3d(100, 100, 50))
 5
 6' set value for single point
 7If cogoPoints.SetShowTooltips(pointId, True) = ObjectId.Null Then
 8    write("SetShowTooltips failed." & vbLf)
 9End If
10
11Dim points As New Point3dCollection()
12points.Add(New Point3d(50, 50, 25))
13points.Add(New Point3d(200, 200, 15))
14Dim pointIds As ObjectIdCollection = cogoPoints.Add(points)
15Dim pointIdList As List(Of ObjectId) = GetListFromCollection(pointIds)
16
17' set multiple points to a single value
18Dim success As ObjectIdCollection = cogoPoints.SetShowTooltips(pointIdList, True)
19write([String].Format("SetShowTooltips success for {0} of {1} points", success.Count, pointIdList.Count))
20
21Dim showTooltips As New List(Of Boolean)()
22For i As Integer = 0 To pointIdList.Count - 1
23    showTooltips.Add(i Mod 2 = 1)
24Next
25
26' set multiple points to multiple values
27success = cogoPoints.SetShowTooltips(pointIdList, showTooltips)
28write([String].Format("SetShowTooltips success for {0} of {1} points", success.Count, pointIdList.Count))
```

--------------------------------

### Create Method Syntax

Source: https://help.autodesk.com/cloudhelp/2021/ENU/Civil3D-API/files/html/70183eee-6962-3426-d4e6-45f898619c6a.htm

Provides the method signature for creating a new site across multiple .NET languages.

```C#
public static ObjectId Create(
	CivilDocument document,
	string siteName
)
```

```Visual Basic
Public Shared Function Create ( _
	document As CivilDocument, _
	siteName As String _
) As ObjectId
```

```Visual C++
public:
static ObjectId Create(
	CivilDocument^ document, 
	String^ siteName
)
```

--------------------------------

### StartStructureId Property

Source: https://help.autodesk.com/cloudhelp/2021/ENU/Civil3D-API/files/html/a6b3f45f-d738-1058-bb46-c77af583dd5b.htm

Gets the start structure id of the Pipe. If no connected structure, return ObjectId::Null.

```APIDOC
## StartStructureId Property

### Description
Gets the start structure id of the Pipe. If no connected structure, return ObjectId::Null.

### Syntax

#### C#
```csharp
public ObjectId StartStructureId { get; }
```

#### Visual Basic
```vb
Public ReadOnly Property StartStructureId As ObjectId
	Get
```

#### Visual C++
```cpp
public:
property ObjectId StartStructureId {
	ObjectId get ();
}
```

### Remarks
OBJECTID TYPE: Autodesk.Civil.DatabaseServices.Structure
```

--------------------------------

### Create Tin Volume Surface Example

Source: https://help.autodesk.com/cloudhelp/2021/ENU/Civil3D-API/files/html/178fcf69-6079-268e-139a-0c00edcd50e3.htm

Demonstrates creating a TIN volume surface within a transaction using selected base and comparison surfaces.

```C#
 1/// <summary>
 2/// Creates a TIN volume surface from two existing TIN surfaces
 3/// </summary>
 4[CommandMethod("CreateTinVolumeSurface")]
 5public void CreateTinVolumeSurface()
 6{
 7    using (Transaction ts = Application.DocumentManager.MdiActiveDocument.Database.TransactionManager.StartTransaction())
 8    {
 9        string surfaceName = "ExampleVolumeSurface";
10        // Prompt user to select surfaces to use
11        // promptForTinSurface uses Editor.GetEntity() to select a TIN surface
12        ObjectId baseId = promptForTinSurface("Select the base surface");
13        ObjectId comparisonId = promptForTinSurface("Select the comparison surface");
14
15        try
16        {
17            // Create the surface
18            ObjectId surfaceId = TinVolumeSurface.Create(surfaceName, baseId, comparisonId);
19            TinVolumeSurface surface = surfaceId.GetObject(OpenMode.ForWrite) as TinVolumeSurface;
20        }
21
22        catch (System.Exception e)
23        {
24            editor.WriteMessage("Surface create failed: {0}", e.Message);
25        }
26
27        // commit the create action
28        ts.Commit();
29    }
30}
```

--------------------------------

### StartPartId Property

Source: https://help.autodesk.com/cloudhelp/2021/ENU/Civil3D-API/files/html/5c0eb0b1-9a25-5a59-15ae-be5e179f5d1d.htm

Gets the start part id of the Pipe. If no connected part, return ObjectId::Null.

```APIDOC
## StartPartId Property

### Description
Gets the start part id of the Pipe. If no connected part, return ObjectId::Null.

### Syntax
#### C#
public ObjectId StartPartId { get; }

#### Visual Basic
Public ReadOnly Property StartPartId As ObjectId

#### Visual C++
public:
property ObjectId StartPartId {
	ObjectId get ();
}
```

--------------------------------

### StationStart Property

Source: https://help.autodesk.com/cloudhelp/2021/ENU/Civil3D-API/files/html/c800936e-0cb5-8d83-b6c4-416f8d88f59d.htm

Gets or sets the start station of the profile view. This property is read-only when StationRangeMode is set to Automatic.

```APIDOC
## StationStart Property

### Description
Gets or sets the start station of the profile view. This property is read-only when StationRangeMode is set to Automatic.

### Syntax
#### C#
```csharp
public double StationStart { get; set; }
```

#### Visual Basic
```vb
Public Property StationStart As Double
```

#### Visual C++
```cpp
public:
property double StationStart {
	double get ();
	void set (double value);
}
```

### Exceptions
- **System.InvalidOperationException**: Thrown when setting this property while StationRangeMode is Automatic.
- **System.ArgumentException**: Thrown when the input StationStart is greater than StationEnd.
```

--------------------------------

### Create and Configure ShapeStyle

Source: https://help.autodesk.com/cloudhelp/2021/ENU/Civil3D-API/files/html/35e6b900-0ee3-320b-da42-ae3ef571a8c4.htm

Example showing how to add a new ShapeStyle to the document and modify its border and fill display properties.

```C#
 1// Create a new shape style and change it so that it has
 2// an orange border and a yellow hatch fill.
 3objId = doc.Styles.ShapeStyles.Add("Style3");
 4ShapeStyle oShapeStyle = ts.GetObject(objId, OpenMode.ForWrite) as ShapeStyle;
 5// 50 = yellow
 6oShapeStyle.GetDisplayStylePlan(ShapeDisplayStyleType.AreaFill).Color = Color.FromColorIndex(ColorMethod.ByAci, 50);
 7oShapeStyle.GetDisplayStylePlan(ShapeDisplayStyleType.AreaFill).Visible = true;
 8//oShapeStyle. GetDisplayStylePlan(ShapeDisplayStyleType.Border). HatchType = HatchType.PreDefined;
 9// oShapeStyle.AreaFillHatchDisplayStylePlan.Pattern = "LINE";
10// 30 = orange
11oShapeStyle.GetDisplayStylePlan(ShapeDisplayStyleType.Border).Color = Color.FromColorIndex(ColorMethod.ByAci, 30);
12oShapeStyle.GetDisplayStylePlan(ShapeDisplayStyleType.Border).Visible = true;
13
14ts.Commit();
```

--------------------------------

### LabelAtStartOffset Property

Source: https://help.autodesk.com/cloudhelp/2021/ENU/Civil3D-API/files/html/3a65145c-ee58-3203-a3d5-5badd293c3bd.htm

Gets or sets a boolean value that specifies whether the labels are shown at the start offset of the band.

```APIDOC
## LabelAtStartOffset Property

### Description
Gets or sets a boolean value that specifies whether the labels are shown at the start offset of the band.

### Syntax
#### C#
```csharp
public bool LabelAtStartOffset { get; set; }
```

#### Visual Basic
```vb
Public Property LabelAtStartOffset As Boolean
```

### Exceptions
| Exception | Condition |
| --- | --- |
| System.InvalidOperationException | Thrown when the band type is not BandType::SectionData. |
```

--------------------------------

### Surface Snapshot Management Example

Source: https://help.autodesk.com/cloudhelp/2021/ENU/Civil3D-API/files/html/24ca15c9-24d8-8d55-c05f-06778323991b.htm

Demonstrates checking for an existing snapshot, removing it, and creating a new one within a transaction.

```C#
 1/// <summary>
 2/// Illustrates using surface snapshots
 3/// </summary>
 4[CommandMethod("SurfaceIntersect")]
 5public void SurfaceIntersect()
 6{
 7    using (Transaction ts = Application.DocumentManager.MdiActiveDocument.Database.TransactionManager.StartTransaction())
 8    {
 9        // get the first surface in the document
10        ObjectId surfaceId = doc.GetSurfaceIds()[0];
11        TinSurface oSurface = surfaceId.GetObject(OpenMode.ForRead) as TinSurface;
12
13        try
14        {
15            if (oSurface.HasSnapshot)
16            {
17                oSurface.RemoveSnapshot();
18            }
19            oSurface.CreateSnapshot();
20            oSurface.RebuildSnapshot();
21        }
22
23        catch (System.Exception e)
24        {
25            editor.WriteMessage("Snapshot Operation Failed: {0}", e.Message);
26        }
27
28        // commit the transaction
29        ts.Commit();
30    }
31}
```

--------------------------------

### LabelAtStartStation Property

Source: https://help.autodesk.com/cloudhelp/2021/ENU/Civil3D-API/files/html/2beb6fe0-8dfa-c299-3a7c-3bf068a3f369.htm

Gets or sets a boolean value that specifies whether the labels are shown at the start station of the band.

```APIDOC
## Property: LabelAtStartStation

### Description
Gets or sets a boolean value that specifies whether the labels are shown at the start station of the band.

### Syntax
#### C#
```csharp
public bool LabelAtStartStation { get; set; }
```

#### Visual Basic
```vb
Public Property LabelAtStartStation As Boolean
```

#### Visual C++
```cpp
public:
property bool LabelAtStartStation {
	bool get ();
	void set (bool value);
}
```

### Exceptions
| Exception | Condition |
| --- | --- |
| System.InvalidOperationException | Thrown when the band type is BandType::HorizontalGeometry or BandType::VerticalGeometry. |
```

--------------------------------

### Initialize AutoWideningInfo

Source: https://help.autodesk.com/cloudhelp/2021/ENU/Civil3D-API/files/html/7b336712-4090-73b0-45ad-561137630fe8.htm

Constructor syntax for creating an instance of the AutoWideningInfo class.

```C#
public AutoWideningInfo()
```

```Visual Basic
Public Sub New
```

```Visual C++
public:
AutoWideningInfo()
```

--------------------------------

### StartStation Property

Source: https://help.autodesk.com/cloudhelp/2021/ENU/Civil3D-API/files/html/0516dad3-75d1-50c9-d0cc-0552b2fccd7e.htm

Gets or sets the start station of the material list gap. This property is part of the QTOMaterialListGap class.

```APIDOC
## Property: StartStation

### Description
Gets or sets the start station of the material list gap.

### Syntax
#### C#
public double StartStation { get; set; }

#### Visual Basic
Public Property StartStation As Double

#### Visual C++
public:
property double StartStation {
	double get ();
	void set (double value);
}

### Exceptions
- **System.ArgumentException**: Thrown when start station is not at the sample line of the sample line group, or makes gap overlap.
```

--------------------------------

### SetDescriptionFormat Usage Examples

Source: https://help.autodesk.com/cloudhelp/2021/ENU/Civil3D-API/files/html/4b62ccfb-a3a4-6289-a0c3-f6c988f5796c.htm

Demonstrates setting description formats for single points, multiple points with a single format, and multiple points with unique formats.

```C#
 1// _civildoc is the active CivilDocument instance.
 2// 
 3CogoPointCollection cogoPoints = _civildoc.CogoPoints;
 4ObjectId pointId = cogoPoints.Add(new Point3d(100, 100, 50));
 5String descriptionFormat = "$*";
 6
 7// set for single point
 8if (cogoPoints.SetDescriptionFormat(pointId, descriptionFormat) == ObjectId.Null)
 9    write("SetDescriptionFormat failed.\n");
10
11Point3dCollection points = new Point3dCollection();
12points.Add(new Point3d(50, 50, 25));
13points.Add(new Point3d(200, 200, 15));
14ObjectIdCollection pointIds = cogoPoints.Add(points);
15List<ObjectId> pointIdList = GetListFromCollection(pointIds);
16
17// set multiple points to a single description
18ObjectIdCollection success = cogoPoints.SetDescriptionFormat(pointIdList, descriptionFormat);
19write(String.Format("SetDescriptionFormat success for {0} of {1} points\n",
20   success.Count, pointIdList.Count));
21
22List<string> descriptions = new List<string>();
23for (int i = 0; i < pointIdList.Count; i++)
24    descriptions.Add(descriptionFormat + " " + i);
25
26// set multiple points to multiple descriptions
27success = cogoPoints.SetDescriptionFormat(pointIdList, descriptions);
28write(String.Format("SetDescriptionFormat success for {0} of {1} points\n",
29   success.Count, pointIdList.Count));
```

```VB.NET
 1' _civildoc is the active CivilDocument instance.
 2'
 3Dim cogoPoints As CogoPointCollection = _civildoc.CogoPoints
 4Dim pointId As ObjectId = cogoPoints.Add(New Point3d(100, 100, 50))
 5Dim descriptionFormat As [String] = "$*"
 6
 7' set for single point
 8If cogoPoints.SetDescriptionFormat(pointId, descriptionFormat) = ObjectId.Null Then
 9    write("SetDescriptionFormat failed." & vbLf)
10End If
11
12Dim points As New Point3dCollection()
13points.Add(New Point3d(50, 50, 25))
14points.Add(New Point3d(200, 200, 15))
15Dim pointIds As ObjectIdCollection = cogoPoints.Add(points)
16Dim pointIdList As List(Of ObjectId) = GetListFromCollection(pointIds)
17
18' set multiple points to a single description
19Dim success As ObjectIdCollection = cogoPoints.SetDescriptionFormat(pointIdList, descriptionFormat)
20write([String].Format("SetDescriptionFormat success for {0} of {1} points", success.Count, pointIdList.Count))
21
22Dim descriptions As New List(Of String)()
23For i As Integer = 0 To pointIdList.Count - 1
24    descriptions.Add(descriptionFormat & " " & i)
25Next
26
27' set multiple points to multiple descriptions
28success = cogoPoints.SetDescriptionFormat(pointIdList, descriptions)
29write([String].Format("SetDescriptionFormat success for {0} of {1} points", success.Count, pointIdList.Count))
```

--------------------------------

### TickAndLabelStartElevation Property

Source: https://help.autodesk.com/cloudhelp/2021/ENU/Civil3D-API/files/html/f059ac6f-2b15-c0b6-6de9-1881230f9514.htm

Gets or sets a boolean value that specifies whether to tick and label the start elevation. This property is obsolete.

```APIDOC
## Property: TickAndLabelStartElevation

### Description
Gets or sets a boolean value that specifies whether to tick and label the start elevation. This property is marked as obsolete; use Autodesk.Civil.DatabaseServices.Styles.AxisStyle.ShowTickAndLabel instead.

### Signature
`public bool TickAndLabelStartElevation { get; set; }`

### Exceptions
- **System.InvalidOperationException**: Thrown when the AxisTickStyle is obtained from a MassHaulViewStyle or SectionViewStyle.
```

--------------------------------

### SampleElevations Usage Example

Source: https://help.autodesk.com/cloudhelp/2021/ENU/Civil3D-API/files/html/0d442419-d6e1-0351-007d-e480fcec4d04.htm

Demonstrates creating a surface and a polyline, then sampling elevations where the polyline intersects the surface.

```C#
 1// Setup: create a new, random surface
 2// 
 3ObjectId surfaceId = TinSurface.Create(_acaddoc.Database, "Example Surface");
 4TinSurface surface = surfaceId.GetObject(OpenMode.ForWrite) as TinSurface;
 5Point3dGenerator p3dgen = new Point3dGenerator();
 6Point3dCollection locations = p3dgen.AsPoint3dCollection();
 7surface.AddVertices(locations);
 8
 9// Define a polyline to sample elevations along
10// SampleElevations takes the ObjectId of any object derived from
11// Autodesk.AutoCAD.DatabaseServices.Curve, including Arc, Line, Polyline, and Spline
12// 
13Database acadDb = _acaddoc.Database;
14BlockTable blockTable = tr.GetObject(acadDb.BlockTableId, OpenMode.ForRead) as BlockTable;
15BlockTableRecord blockTableRec = tr.GetObject(blockTable[BlockTableRecord.ModelSpace], OpenMode.ForWrite) as BlockTableRecord;
16
17Polyline polyline = new Polyline();
18polyline.SetDatabaseDefaults();
19polyline.AddVertexAt(0, new Point2d(10, 10), 0, 0, 0);
20polyline.AddVertexAt(1, new Point2d(20, 10), 0, 0, 0);
21polyline.AddVertexAt(2, new Point2d(40, 35), 0, 0, 0);
22polyline.AddVertexAt(3, new Point2d(60, 40), 0, 0, 0);
23polyline.Closed = false;
24blockTableRec.AppendEntity(polyline);
25tr.AddNewlyCreatedDBObject(polyline, true);
26
27// Sample elevations at each intersection between triangle/grid edges and
28// the curve:
29// 
30Point3dCollection samples = surface.SampleElevations(polyline.ObjectId);
31foreach (Point3d point in samples)
32{
33    write(String.Format("Elevation at {0},{1}:{2}\n",
34        point.X, point.Y, point.Z));
35}
```

--------------------------------

### StartCorner Property

Source: https://help.autodesk.com/cloudhelp/2021/ENU/Civil3D-API/files/html/0cb16e08-09f3-4bf5-da42-50bb7b1b7c4c.htm

Gets or sets the GroupPlotStartCornerType enum value that specifies the starting corner type for plotting the section views.

```APIDOC
## StartCorner Property

### Description
Gets or sets the GroupPlotStartCornerType enum value that specifies the starting corner type for plotting the section views.

### Syntax
#### C#
```csharp
public GroupPlotStartCornerType StartCorner { get; set; }
```

#### Visual Basic
```vb
Public Property StartCorner As GroupPlotStartCornerType
```

#### Visual C++
```cpp
public:
property GroupPlotStartCornerType StartCorner {
	GroupPlotStartCornerType get ();
	void set (GroupPlotStartCornerType value);
}
```
```
Tokens:
Raw