[Solved] RadGridView Row Validation: Double access event Validating

[thuc timtri]

I using the radgridview row validation. When insert new row to gridview then access double event RowValidating.
(I use Silverlight 4 and Telerik RadControls_for_Silverlight_4_2010_2_0812)

private void RadGridView1_RowValidating(object sender, GridViewRowValidatingEventArgs e)
{
    if ( ..... )
    {
        .....
    }
}

Who is know this issue?