How can I clear a bound GridView in C#.Net

Hi experts,
I use a bound GridView in my ASP.Net application with C# code behind.  I bind the GridView with a data table using the code below.  I need to know how to clear the bound GridView.  Thanks in advance.

            dt = Session["Addresses"] as DataTable;
            gdvAddresses.DataSource = dt;
            gdvAddresses.Visible = true;

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Edgard YamashitaSystems AnalystCommented:
you can just set the datasource to null eg:

 gdvAddresses.DataSource = null;
            gdvAddresses.Visible = true;

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