Want to show popup on Click of serverside button control using ModalPopupExtender in Ajax

Dear All
Want to show popup on Click of serverside button control using ModalPopupExtender in Ajax
When I will click on button, controls on popup control should fill with some values
any solution for this problem?

please help me.

thanks in adv.

protected void Page_Load(object sender, EventArgs e)
    {
        //if (!Page.IsPostBack)
        //{
           
        //}
    }
   
    protected void Button1_Click(object sender, EventArgs e)
    {
        lbl1.Text = TextBox1.Text;
        Label1.Text = TextBox2.Text;
        Label2.Text = TextBox3.Text;
        ModalPopupExtender1.Show();
    }

this is source code:

   <div>
        <asp:ScriptManager ID="ScriptManager1" runat="server" />
        <asp:TextBox ID="TextBox1" runat="server"></asp:TextBox>
        <br />
        <br />
        <asp:TextBox ID="TextBox2" runat="server"></asp:TextBox>
        <br />
        <br />
        <asp:TextBox ID="TextBox3" runat="server"></asp:TextBox>
        <br />
        <br />
        <asp:Button ID="Button1" runat="server" OnClick="Button1_Click" Text="Ok" />
        &nbsp;&nbsp;&nbsp;
        <asp:Button ID="Button2" runat="server" Text="Cancel" />
        <asp:Panel ID="Panel1" runat="server" BackColor="#ffffff" BorderColor="#dadada" BorderStyle="Solid"
            BorderWidth="4px" Height="190px" Width="350px" Font-Names="Arial" Font-Size="10pt">
            <table cellpadding="10" cellspacing="0" style="width: 100%">
                <tr>
                    <td>
                        1
                        <asp:Label ID="lbl1" runat="server"></asp:Label>
                    </td>
                </tr>
                <tr>
                    <td>
                        2
                        <asp:Label ID="Label1" runat="server"></asp:Label>
                    </td>
                </tr>
                <tr>
                    <td>
                        3
                        <asp:Label ID="Label2" runat="server"></asp:Label>
                    </td>
                </tr>
                <tr>
                    <td>
                        <asp:Button ID="Button3" runat="server" Text="Submit" />
                        <asp:Button ID="Button4" runat="server" Text="Cancel" />
                    </td>
                </tr>
            </table>
        </asp:Panel>
        <cc1:ModalPopupExtender ID="ModalPopupExtender1" runat="server" PopupControlID="Panel1"
            DropShadow="True" TargetControlID="Button1" CancelControlID="Button4" BackgroundCssClass="BackgroundStyle" />
    </div>