DataGrid.DataSource = dt;
then i save some staff in my DB and then i wanted to bound different data table to the same grid using the same command line
DataGrid.DataSource = saveddt;
but i get a null reference exception
Object reference not set to an instance of an object.
at Telerik.WinControls.UI.GridTableBodyElement.editor_Validated(Object sender, EventArgs e)\r\n at Telerik.WinControls.UI.RadCheckBoxEditor.OnValidated(EventArgs args)\r\n at Telerik.WinControls.UI.RadCheckBoxEditor.SaveValue()\r\n at Telerik.WinControls.UI.GridTableBodyElement.ResetActiveEditor(Boolean restoreOriginalValue)\r\n at Telerik.WinControls.UI.GridTableBodyElement.Update(Boolean dataSourceChanged)\r\n at Telerik.WinControls.UI.GridTableElement.Update(Boolean dataSourceChanged)\r\n at Telerik.WinControls.UI.GridViewInfo.UpdateView(Boolean dataSourceChanged)\r\n at Telerik.WinControls.UI.GridViewInfo.UpdateView()\r\n at Telerik.WinControls.UI.GridViewTemplate.Rebind()\r\n at Telerik.WinControls.UI.RadGridView.RefreshColumnsAndRows()\r\n at Telerik.WinControls.UI.GridViewData.InitDataOnly()\r\n at Telerik.WinControls.UI.GridViewData.InitView()\r\n at Telerik.WinControls.UI.GridViewData.SetDataConnection(Object dataSource, String dataMember)\r\n at Telerik.WinControls.UI.RadGridView.DoDataBinding()\r\n at Telerik.WinControls.UI.RadGridView.CallDoDataBinding()\r\n at Telerik.WinControls.UI.GridViewTemplate.set_DataSource(Object value)\r\n at Telerik.WinControls.UI.RadGridView.set_DataSource(Object value)\r\n