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Asked: 2026-05-11T06:12:15+00:00

I have created usercontrol GridEx:UserControl. On that control I putted GridControl (DevExpress datagrid control).

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I have created usercontrol GridEx:UserControl. On that control I putted GridControl (DevExpress datagrid control). I have created Property DataGrid which return inner datagrid control (previously added) How to enable design support for DataGrid ? I try to put 

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

but I get this error: Failed to create component ‘DataGridControl’.
The error message follows:

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...
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1 Answer

  1. Solution can be founded here:

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

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