Error -- VB.NET运行时报COM object that has been separated from its underlying RCW cannot be used

系统环境： Win7 VB.NET 

详细信息

System.Runtime.InteropServices.InvalidComObjectException: COM object that has been separated from its underlying RCW cannot be used.

原因： COM 对象被dispose之后使用，如给COM对象的属性赋值。