ArcGIS Pro 2.7 API Reference Guide
SynchronizeAttributeAwareness Method
Example 

ArcGIS.Core.Geometry Namespace > MultipatchBuilderEx Class : SynchronizeAttributeAwareness Method
Synchronizes attribute awareness of Patches to match attribute awareness of the MultipatchBuilderEx.
Syntax
public bool SynchronizeAttributeAwareness()
Public Function SynchronizeAttributeAwareness() As Boolean

Return Value

Returns true if the patches have been changed and false otherwise.
Remarks
Attribute awareness refers to whether the patch recognizes M-values or ID-values or not. Applies attribute awareness of MultipatchBuilderEx to all the Patches contained in the builder. Synchronizes sizes of attribute lists of individual patches to match the size of the Patch.Coords list.
Example
// create the multipatchBuilderEx object
var builder = new ArcGIS.Core.Geometry.MultipatchBuilderEx(multipatch);

// check some properties
bool hasM = builder.HasM;
bool hasZ = builder.HasZ;
bool hasID = builder.HasID;
bool isEmpty = builder.IsEmpty;
bool hasNormals = builder.HasNormals;

var patches = builder.Patches;
int patchCount = patches.Count;

// if there's some patches
if (patchCount > 0)
{
  int pointCount = builder.GetPatchPointCount(0);

  // replace the first point in the first patch
  if (pointCount > 0)
  {
    // get the first point
    var pt = builder.GetPoint(0, 0);
    builder.SetPoint(0, 0, newPoint);
  }

  // check which patches currently contain the texture
  var texture = builder.QueryPatchIndicesWithTexture(brickTextureResource);

  // assign a texture material
  patches[0].Material = brickMaterialTexture;
}

// update the builder for M awareness
builder.HasM = true;
// synchronize the patch attributes to match the builder attributes
//   in this instance because we just set HasM to true on the builder, each patch will now get a default M value for it's set of coordinates
builder.SynchronizeAttributeAwareness();

// call ToGeometry to get the multipatch
multipatch = builder.ToGeometry() as Multipatch;

// multipatch.HasM will be true
Requirements

Target Platforms: Windows 10, Windows 8.1

See Also

Reference

MultipatchBuilderEx Class
MultipatchBuilderEx Members