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Grid Edit & delete Event

Edit
 <asp:CommandField ButtonType="Image" EditImageUrl="~/images/Edit.jpg" HeaderText="Edit" ShowEditButton="true" />
Delete
<asp:CommandField ButtonType="Image" DeleteImageUrl="../images/Images_delete.gif"  HeaderText="Delete" ShowDeleteButton="true" />

and call grid event
OnRowDeleting="grdview_RowDeleting" OnRowEditing="grdview_RowEditing"

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