Accessing AutoCAD Civil 3D Alignment Design Speeds using .NET API

By Partha Sarkar

For a given Alignment object in AutoCAD Civil 3D, we want to find out the all the 'Station' values and the corresponding 'Design Speed' as shown in the screenshot below -

 

We can access these values using DesignSpeed class in Civil 3D .NET API.

Here is a relevant code snippet in C# -

 

Alignment objAlignment = trans.GetObject(alignmentId, OpenMode.ForRead) as Alignment;

 

foreach (DesignSpeed objDS in objAlignment.DesignSpeeds)

{

 

  ed.WriteMessage("\n\tDesign Speed Number :{0} -- Start Station: {1} --- Design Speed Value :{2}",

    objDS.SpeedNumber.ToString(), objDS.Station.ToString(), objDS.Value.ToString() );                      

 

}

Hope this is useful to you!