Change the style of a surface using the Civil 3D API

If you need to change the style of the surface, such as changing the color of the contour, and so on, in civil 3D, you can change by selecting the surface in Toolspace, then right-clicking on "Edit surface style ..." and switching to "Display" tab:

The following code uses the API to achieve the same effect:

[Commandmethod("MyGroup","Surfacestyleexample",
"Surfacestyleexample",Commandflags. Modal)]
 PublicvoidMyCommand ()//This method can has any name
{
 
DocumentDoc =Application. Documentmanager.mdiactivedocument;

if(Doc! =NULL)
{
Editored =Application. Documentmanager
. Mdiactivedocument.editor;
 
 
 
//Select a tin surface
 
promptentityoptionsPEO =Newpromptentityoptions(
"\nselect a tin Surface:");
Peo. Setrejectmessage ("\nonly Tin surface is accepted");
Peo. Addallowedclass (typeof(Tinsurface),true);
Promptentityresultper = ed. GetEntity (PEO);
if(per. Status! =Promptstatus. OK)return;
 
civildocumentCivildoc =civilapplication. ActiveDocument;
 
using(Transactiontrans = doc. TransactionManager
. StartTransaction ())
{
TinsurfaceSurface = trans. GetObject (per. ObjectId,
OpenMode. Forread) asTinsurface;
 
//exclude Invalid points, bonus function, exception points excluded
 
Surface. Buildoptions.execludemaximumelevation =true;
Surface. Buildoptions.maximumelevation = 5000;
Surface. Buildoptions.execludeminimumelevation =true;
Surface. Buildoptions.minimumelevation = 200;
 
//set the Maximum Triangle length, set the maximum edge length of the triangle
 
Surface. Buildoptions.maximumtrianglelength = 200;
 
//change the style, it's starting to change styles
ObjectIdStyleId;
 if(CivilDoc.Styles.SurfaceStyles.Contains ("Standard"))
{
StyleId = civildoc.styles.surfacestyles["Standard"];
}
Else
{
 //Create a new style called ' Example style ':
StyleId = CivilDoc.Styles.SurfaceStyles
. ADD ("Example Style");
 
}


 
//Modify the style
 
SurfacestyleSurfacestyle = Styleid.getobject (
OpenMode. Forwrite) asSurfacestyle;
 
//countours Smoothing
 
SurfaceStyle.ContourStyle.SmoothContours =true;
SurfaceStyle.ContourStyle.SmoothingType
=Contoursmoothingtype. Addvertices;
SurfaceStyle.ContourStyle.SmoothingFactor = 10;
 
SurfaceStyle.ContourStyle.MajorContourColorScheme
=Colorschemetype. Rainbow;
 
 //major Contour, Red
 
Surfacestyle.getdisplaystyleplan (
Surfacedisplaystyletype. Majorcontour). Color
= Autodesk.AutoCAD.Colors.Color. Fromrgb (255, 0, 0);
 
//major Contour, layer 0
 
Surfacestyle.getdisplaystyleplan (
Surfacedisplaystyletype. Majorcontour). Layer ="0";
 
//mainor Contour, Gree
 
Surfacestyle.getdisplaystyleplan (
Surfacedisplaystyletype. Minorcontour). Color
= Autodesk.AutoCAD.Colors.Color. Fromrgb (0, 255, 0);
 
//mainor Contour, layer 0, if you want to put on another layer, make sure that the layer exists
 
Surfacestyle.getdisplaystyleplan (
Surfacedisplaystyletype. Majorcontour). Layer ="0";
 
 //Display major contours:
 
Surfacestyle.getdisplaystyleplan (Surfacedisplaystyletype
. Majorcontour). Visible =true;
Surfacestyle.getdisplaystyleplan (Surfacedisplaystyletype
. Minorcontour). Visible =true;
 
 //Turn off display of other items:

Surfacestyle.getdisplaystyleplan (Surfacedisplaystyletype
. usercontours). Visible =false;
Surfacestyle.getdisplaystyleplan (Surfacedisplaystyletype
. Directions). Visible =false;
Surfacestyle.getdisplaystyleplan (Surfacedisplaystyletype
. elevations). Visible =false;
Surfacestyle.getdisplaystyleplan (Surfacedisplaystyletype
. Slopes). Visible =false;
Surfacestyle.getdisplaystyleplan (Surfacedisplaystyletype
. Slopearrows). Visible =false;
Surfacestyle.getdisplaystyleplan (Surfacedisplaystyletype
. watersheds). Visible =false;
 
 //todo:do the same for all model display settings as well
// 
 
 
//Assign the style to the first surface in the document:

Surface. StyleId = StyleId;
 
//Commit the transaction
 
Trans.commit ();
 
//rebuild the surface
Surface. Rebuild ();
}
 
}
 
 
 
}

Before you change the image:

After running, the contour color has changed.

Hope this helps.

Change the style of a surface using the Civil 3D API