Question

I have GridView with Template Column.Inside the template column i have asp:hiddenfield. I am binding the value using Eval() method.When i am trying to access the value of hiddenfi not accesible while visibility false
ASPX

   <asp:TemplateField HeaderText="Select" Visible="false">
       <ItemTemplate>
           <asp:HiddenField ID="hdnMasterId" runat="server" 
              Value='<%# DataBinder.Eval(Container.DataItem, "Master_Id") %>' />
           <asp:CheckBox ID="chkDelete" runat="server" />
       </ItemTemplate>
       <ItemStyle Width="4%" HorizontalAlign="Center"></ItemStyle>
            <HeaderStyle HorizontalAlign="Center" />
   </asp:TemplateField>

CODE BEHIND

protected void gdvList_RowCommand(object sender, GridViewCommandEventArgs e)
{
    int intIndex = Convert.ToInt32(e.CommandArgument);
    GridViewRow row = gdvList.Rows[intIndex];
    HiddenField hdn = (HiddenField)row.FindControl("hdnMasterId");
}

Answer 1

If you set visibility=”false” on a column it won’t generate any html, thus wont have the hidden control. You need to put the hiddenfield elsewhere or hide the column with css/style instead.