在Visual Studio 2008中為UserControl啟用設計時支持

Question

我已經創建了usercontrol GridEx：UserControl。 在該控件上，我放入了GridControl（DevExpress datagrid控件）。 我已經創建了Property DataGrid，該屬性返回了內部datagrid控件（先前已添加）如何啟用對DataGrid的設計支持？ 我試着放

[Designer("DevExpress.XtraGrid.Design.GridControlDesigner,
    DevExpress.XtraGrid.v8.2.Design", typeof(IDesigner))] 

但我收到此錯誤：無法創建組件'DataGridControl'。
錯誤消息如下：

System.NullReferenceException: Object reference not set to an instance of an object.
  at DevExpress.XtraGrid.Design.GridControlDesigner.Initialize(IComponent component)
  at System.ComponentModel.Design.DesignerHost.AddToContainerPostProcess(IComponent component, String name, IContainer containerToAddTo)
  at System.ComponentModel.Design.DesignerHost.Add(IComponent component, String name)
  at System.ComponentModel.Design.DesignerHost.System.ComponentModel.Design. IDesignerHost.CreateComponent(Type componentType, String name)
   at System.ComponentModel.Design.DesignerHost.System.ComponentModel. Design.IDesignerHost.CreateComponent(Type componentType)
   at System.Drawing.Design.ToolboxItem.CreateComponentsCore(IDesignerHost host)
   at System.Drawing.Design.ToolboxItem.CreateComponentsCore(IDesignerHost host, IDictionary defaultValues)
   at System.Drawing.Design.ToolboxItem.CreateComponents(IDesignerHost host, IDictionary defaultValues)
   at System.Windows.Forms.Design.OleDragDropHandler.Cre...

Answer 1

嘗試從DevExpress網格控件而不是'UserControl'類派生用戶控件。

Answer 2

解決方案可以在這里建立：

http://www.devexpress.com/kb=A577