Are you trying to clone the property or perhaps the entire block definition. Either way, I'd start by loading the source drawing into a temp cad database. Then finding the block definition.
''' <summary> ''' Finds / inserts a block definition from file. ''' </summary> ''' <param name="strSourceBlockName">Name of inserted block</param> ''' <param name="strSourceBlockPath">Name of block's dwg file</param> ''' <returns>BlockTableRecord of the found/inserted block</returns> ''' <remarks>If block is not found, then an error is thrown, and nothing is returned.</remarks> Public Function GetBlock(ByVal strSourceBlockName As String, ByVal strSourceBlockPath As String, ByRef db As Database, ByRef mTrans As Transaction) As BlockTableRecord Dim oid As ObjectId = Nothing Dim btr As BlockTableRecord = Nothing Dim bt As BlockTable = db.BlockTableId.GetObject(OpenMode.ForRead) If bt.Has(strSourceBlockName) Then btr = bt(strSourceBlockName).GetObject(OpenMode.ForRead) Else Using trans As Transaction = mTrans.TransactionManager.StartTransaction Using sourcedb As Database = New Database(False, False) Try sourcedb.ReadDwgFile(strSourceBlockPath, IO.FileShare.Read, True, "") oid = db.Insert(strSourceBlockPath, sourcedb, True) btr = trans.GetObject(oid, OpenMode.ForWrite, True, True) btr.Name = strSourceBlockName trans.Commit() Catch ex As System.Exception Throw New System.Exception("Block file not found " & strSourceBlockPath & ": ", ex) End Try End Using End Using End If Return btr End Function
Once you have the source database loaded get the block or block reference and start working on it.
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