ArcGIS Pro 3.4 API Reference Guide
ArcGIS.Desktop.Mapping Namespace / TinContourRendererDefinition Class / ContourInterval Property
Example Version

ContourInterval Property (TinContourRendererDefinition)
Gets or sets the contour interval. The default value is 5.0.
Syntax
public double ContourInterval {get; set;}
Example
Contour Renderer
var contourDef = new TinContourRendererDefinition();

// now customize with a symbol
contourDef.Label = "Contours";
contourDef.SymbolTemplate = contourLineSymbol.MakeSymbolReference();
contourDef.ContourInterval = 6;

contourDef.IndexLabel = "Index Contours";
contourDef.IndexSymbolTemplate = indexLineSymbol.MakeSymbolReference();
contourDef.ContourFactor = 4;
contourDef.ReferenceHeight = 7;

if (surfaceLayer.CanCreateRenderer(contourDef))
{
  CIMTinRenderer renderer = surfaceLayer.CreateRenderer(contourDef);
  if (surfaceLayer.CanSetRenderer(renderer, SurfaceRendererTarget.Contours))
    surfaceLayer.SetRenderer(renderer, SurfaceRendererTarget.Contours);
}
Requirements

Target Platforms: Windows 11, Windows 10

ArcGIS Pro version: 3.2 or higher.
See Also