Telerik RadGrid has a rich design-time support, which allows you to build a grid, customize it and see the changes reflected immediately.
Before you start your work with the design-time, you will need to set the necessary dataSets and DataAdapters (SqlDataAdapter, OleDbDataAdapter, etc.) in order to use them directly in the property builder. When setting the dataset, you may also set the table relations.
In order to use the Telerik RadGrid design-time support effectively, you need to set the DataSource property in the ASPX declaration of the grid.
<telerik:RadGrid RenderMode="Lightweight" ID="RadGrid1" runat="server" DataSource="<%# dataSet11 %>"
If you don't set the DataSource property here, you will not see the changes you have made in the design-time.
After you drag and drop an instance of Telerik RadGrid from the toolbox onto the webform, right-click it and select the [Telerik RadGrid Properties] command.
Before you start your work with the design-time, you will need to set the necessary DataSource controls.
This will pop up the Telerik RadGrid editor dialog.