c# - C#中的ActiveX常见对话框控件错误

Question

我在 Arcobjects 的示例代码中遇到了一个奇怪的错误，但该错误似乎不是 arcobjects 的一部分

这是发生错误的代码部分：

        // Get the typeinfo for the ActiveX common dialog control
        typ = Type.GetTypeFromProgID("MSComDlg.CommonDialog");

        // Create an instance of the control.  We pass it to the property frame function
        // so the property pages have an object from which to get current settings and apply
        // new settings.
        obj = Activator.CreateInstance(typ); ///////the error occurs here 
        // This handy function calls IPersistStreamInit->New on COM objects to initialize them
        ActiveXMessageFormatter.InitStreamedObject(obj);

当执行到达这一行时， obj = Activator.CreateInstance(typ);我收到此错误COM EXCEPTION WAS UNHANDELED BY THE USER

请提供任何帮助