How to hide specific column in gridview in ASP.Net using C#

Now I would like to share how to hide specific column that you want to hide a column within gridview in ASP.Net using C#. I have a gridview with two columns. Now I want to hide a column when I click on a radio button. Please examine code below:
Form Design :
  <asp:RadioButtonList ID="Rdbshow" runat="server" AutoPostBack="true"                                 onselectedindexchanged="Rdbshow_SelectedIndexChanged">
           <asp:ListItem Value="1" Selected="true"> Hide TOV_ID</asp:ListItem>
           <asp:ListItem Value="2">show TOV_ID </asp:ListItem>                </asp:RadioButtonList>
<asp:GridView ID="GridView1"  runat="server" AllowSorting="True"  AutoGenerateColumns="False"  DataKeyNames="TOV_ID" >
       <Columns>
            <asp:BoundField DataField="TOV_ID" HeaderText="TOV_ID"   SortExpression="TOV_ID" />
             <asp:BoundField DataField="TOV_Description" HeaderText="Visitor Type" SortExpression="TOV_Description" />
        </Columns>
 </asp:GridView>

 Code Behind: 
 protected void Rdbshow_SelectedIndexChanged(object sender, EventArgs e)
 {
      if (Rdbshow.SelectedValue.ToString() == "1")
      {     
                    GridViewdata.Columns[0].HeaderText = "TOV_ID";
                   // hide column
                    GridViewdata.Columns[0].Visible = False;
      }else if (Rdbshow.SelectedValue.ToString() == "2") {                  
                   GridViewdata.Columns[0].HeaderText = "TOV_ID";
                    // show column
                    GridViewdata.Columns[0].Visible = True;
      }
}
Note:   TOV_ID is HeaderText that you want to hide , 0 is Column's index of TOV_ID column.

Let's debug your code. So when you click on Hide TOV_ID radiobutton, the TOV_ID column will hide and It will show it  if you click on Show TOV_ID radiobutton.