how to handle click event of linkbutton in gridview in asp.net

<ItemTemplate>        
        <asp:LinkButton ID="LinkButton1" CommandName="export" OnClick="LinkButton1_Click" runat="server">LinkButton</asp:LinkButton>
    </ItemTemplate>

protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e)
    {
        if (e.Row.RowType == DataControlRowType.DataRow)
        {
             LinkButton lnk = e.Row.FindControl("LinkButton1") as LinkButton;
             lnk.Click += new EventHandler(LinkButton1_Click);
        }
    }
protected void LinkButton1_Click(object sender, EventArgs e)
   {

   }