Get or Set DisplayStyles for MassHaulViewStyle using .NET API

By Partha Sarkar

In Civil 3D 2012 and earlier releases there were some issues in accessing some of the display styles (listed below) for a MassHaulViewStyle object:

MassHaulViewDisplayStyleType.MiddleAxis

MassHaulViewDisplayStyleType.MiddleAxisTitle

MassHaulViewDisplayStyleType.MiddleAxisAnnotationMajor

MassHaulViewDisplayStyleType.MiddleAxisAnnotationMinor

MassHaulViewDisplayStyleType.MiddleAxisTicksMajor

MassHaulViewDisplayStyleType.MiddleAxisTicksMinor

MassHaulViewDisplayStyleType.GridAtSampleLineStations

In 2013
release of Civil 3D .NET API, this issue is fixed and you can now access and
set these displayStyles for a MassHaulViewStyle using .NET API.

Here is a C# code snippet :

using (Transaction tr = db.TransactionManager.StartTransaction())
{
  MassHaulViewStyle style = tr.GetObject(oId, OpenMode.ForWrite) as MassHaulViewStyle;
 
  DisplayStyle displayStyleMiddleAxis = 
    style.GetDisplayStylePlan(Autodesk.Civil.MassHaulViewDisplayStyleType.MiddleAxis);
 
  DisplayStyle displayStyleMiddleAxisTitle = 
    style.GetDisplayStylePlan(Autodesk.Civil.MassHaulViewDisplayStyleType.MiddleAxisTitle);
 
  DisplayStyle displayStyleMiddleAxisAnnotationMajor = 
    style.GetDisplayStylePlan(Autodesk.Civil.MassHaulViewDisplayStyleType.MiddleAxisAnnotationMajor);
 
  DisplayStyle displayStyleMiddleAxisAnnotationMinor = 
    style.GetDisplayStylePlan(Autodesk.Civil.MassHaulViewDisplayStyleType.MiddleAxisAnnotationMinor);
 
  DisplayStyle displayStyleMiddleAxisTicksMajor = 
    style.GetDisplayStylePlan(Autodesk.Civil.MassHaulViewDisplayStyleType.MiddleAxisTicksMajor);
 
  // Works fine in Civil 3D 2013
  try 
  { 
    ed.WriteMessage("n" + displayStyleMiddleAxis.Layer);
    displayStyleMiddleAxis.Layer = "0";
 
  }
  catch (System.Exception ex) 
  { 
    ed.WriteMessage("n" + ex.Message); 
  }
 
  try 
  { 
    ed.WriteMessage("n" + displayStyleMiddleAxisTitle.Layer);
    displayStyleMiddleAxisTitle.Layer = "0";
  }
  catch (System.Exception ex) 
  { 
    ed.WriteMessage("n" + ex.Message); 
  }
 
  // Similar way we can access or set other DisplayStyle properties of MassHaulViewStyle                
  //...
 
  tr.Commit();
}

Hope this is
useful to you!