public static int[] GetIDs(this IVisio.Selection selection)
{
System.Array ids_sa;
selection.GetIDs(out ids_sa);
int[] ids = (int[])ids_sa;
return(ids);
}
public void selectShpLayer(string layerName)
{
int i = 0;
int[] lngRowIDs;
Array lngRowIDArray;
//this selects the shapes of the selected layer
LayerSelection = acPage.CreateSelection(Microsoft.Office.Interop.Visio.VisSelectionTypes.visSelTypeByLayer, Microsoft.Office.Interop.Visio.VisSelectMode.visSelModeSkipSuper, layerName);
LayerSelection.GetIDs(out lngRowIDArray);
lngRowIDs = (int[])lngRowIDArray;
for (i = 0; i < lngRowIDs.Length; i++)
{
Debug.Write("Object ID: " + lngRowIDs[i].ToString() + "\n");
}
}