AspxGridView Specified Method Is Not Supported?

Jul 12, 2010

Bellow is my .aspx aspxGridview syntax

<dx:ASPxGridView ID="ASPxGridView1" runat="server" AutoGenerateColumns="False"
KeyFieldName="intProductCode" onrowinserted="ASPxGridView1_RowInserted">
<Columns> [code]....

When i want to insert ,show me error message Specified method is not supported.

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