need help in updating gridview [Resolved]

        <asp:GridView ID="GridView1" runat="server" CellPadding="4" ForeColor="#333333" GridLines="None"

            AutoGenerateColumns="false" OnRowCommand="GridView1_RowCommand">

            <Columns>

                <asp:TemplateField HeaderText="Approved">

                    <ItemTemplate>

                        <asp:LinkButton ID="lnkApproved" runat="server" Text="Approved" CommandName="Approved" CommandArgument='<%#Eval("EmpID") %>'/>

                    </ItemTemplate>

                </asp:TemplateField>

                <asp:TemplateField HeaderText="Reject">

                    <ItemTemplate>

                        <asp:LinkButton ID="lnkReject" runat="server" Text="Reject" CommandName="Reject" CommandArgument='<%#Eval("EmpID") %>'/>

                    </ItemTemplate>

                </asp:TemplateField>

                <asp:TemplateField HeaderText="Column Header">

                    <ItemTemplate>

                        <%# Eval("Column_Name") %>

                    </ItemTemplate>

                </asp:TemplateField>

                <asp:TemplateField HeaderText="Column Header">

                    <ItemTemplate>

                        <%# Eval("Column_Name")%>

                    </ItemTemplate>

                </asp:TemplateField>

            </Columns>

        </asp:GridView>

protected void GridView1_RowCommand(object sender, GridViewCommandEventArgs e)

    {

        string Emp_ID = e.CommandArgument.ToString();



        if (e.CommandName.ToString() == "Reject")

        {

            // Call Reject Stored Procedure



        }

        else if(e.CommandName.ToString() == "Approved")

        {

            // Call Approved Stored Procedure



        }

    }