.NET Interface with AutoCAD -- SetXData errors.

Answer 1

The error message is telling you one or both the data types in your call to method SetXData is not correct.

I don't have personal experience with what you're trying to do but I suggest changing the data type of xDataStrings to an array of objects:

object[] xDataStrings;

Check out this thread on the autodesk forums. Sample .NET code is posted which may help you.