Gets the number of bytes contained in a column in an IDTSBuffer100.
Assembly: Microsoft.SqlServer.DTSPipelineWrap (in Microsoft.SqlServer.DTSPipelineWrap.dll)
The method is used to determine the number of bytes in a column that contains a binary large object (BLOB) data type, such as a DT_IMAGE. This method is typically called before a call to the GetBLOBData method. The third parameter to GetBLOBData is the number of bytes to retrieve from the BLOB. You call this method before calling GetBLOBData to retrieve all the bytes in a BLOB column.