Hide particular column into Grid on special condition

In Aspx :

----------

<telerik:GridBoundColumn DataField="LastName" UniqueName="LastName"

                                                                                                  HeaderText="Last Name" HeaderStyle-HorizontalAlign="Right">

                                                                                                    <ItemStyle HorizontalAlign="Right" />

                                                                                                </telerik:GridBoundColumn>

In Aspx.cs

-------------

protected void Page_Load(object sender, EventArgs e)

        {

HideColumn("LastName "); //-- Column Name

}

private void HideColumn(string uniqueName)

        {

            GridColumn gridCol = dgSiteList.Columns.FindByUniqueNameSafe(uniqueName);

            if (gridCol != null)

                gridCol.Visible = false;

        }