how can i get the value of hidden field in grid view?
<p>the order number of hidden field in grid view is 7. </p>

<p>when i click the button the line </p>

<pre><code>string sValue = ((HiddenField)GridView1.SelectedRow.Cells[7].FindControl("HiddenField1")).Value; 
</code></pre>

<p>gives error which is "Object reference not set to an instance of an object."</p>

<pre><code>          &lt;asp:TemplateField&gt;
            &lt;ItemTemplate&gt; 

                &lt;asp:HiddenField ID="HiddenField1" runat="server" 
                    Value='&lt;%#Eval("RSS_ID")%&gt;'/&gt;

            &lt;/ItemTemplate&gt;
          &lt;/asp:TemplateField&gt;
</code></pre>

<p>c# side</p>

<pre><code>else if (e.CommandName == "View")
{
    string sValue = ((HiddenField)GridView1.SelectedRow.Cells[7].FindControl("HiddenField1")).Value;                   
}
</code></pre>
