the gridview is bound with the database and there are 20 columns in it. now what i wanted to do is to select the values of some of those columns when the Edit button is clicked. Please Help as i dont know how to.

```
  <asp:GridView ID="gv_Data" runat = "server" Font-Size="XX-Small"BackColor="#DEBA84" 
        BorderColor="#DEBA84" BorderStyle="None" BorderWidth="1px" CellPadding="3" 
        CellSpacing="2" onrowcommand="gv_Data_RowCommand">
    <Columns>

    <asp:ButtonField ButtonType="Button"
    CommandName = "EditRow"
    Text="Edit"/>
    </Columns>

        <FooterStyle BackColor="#F7DFB5" ForeColor="#8C4510" />
        <HeaderStyle BackColor="#A55129" Font-Bold="True" ForeColor="White" />
        <PagerStyle ForeColor="#8C4510" HorizontalAlign="Center" />
        <RowStyle BackColor="#FFF7E7" ForeColor="#8C4510" />
        <SelectedRowStyle BackColor="#738A9C" Font-Bold="True" ForeColor="White" />
        <SortedAscendingCellStyle BackColor="#FFF1D4" />
        <SortedAscendingHeaderStyle BackColor="#B95C30" />
        <SortedDescendingCellStyle BackColor="#F1E5CE" />
        <SortedDescendingHeaderStyle BackColor="#93451F" />

    </asp:GridView>

```