I Have A Textbox And A Search Button When I Insert Somthing In Textbox And Click Search Button It Must Fetch Data From Database And Show It In Popup With Close Button In Corner.How Can I Do This ...

<![CDATA[<%@ Register Assembly="AjaxControlToolkit" Namespace="AjaxControlToolkit" TagPrefix="asp" %>]]>

<asp:textbox id="txtSearch" runat="server" xmlns:asp="#unknown"></asp:textbox>
        <asp:button id="btnSearch" runat="server" text="Button" xmlns:asp="#unknown">
            onclick="btnSearch_Click" />
<asp:modalpopupextender id="ModalPopupExtender1" cancelcontrolid="BtnClose" targetcontrolid="btnSearch" runat="server" popupcontrolid="modalpopup">
        </asp:modalpopupextender>
		<asp:panel id="modalpopup" style="display:none;font-family:Monotype Corsiva; background:yellow; height:100px;" runat="server">
     <%--   Bind your data to control--%>
            <asp:gridview id="GridView1" runat="server" autogeneratecolumns="false">
            <columns>
            <asp:templatefield headertext="Header1">
               <asp:label id="lbl1" runat="server" text="<%Eval("Databasefiled1") %>"></asp:label>
            </asp:templatefield>
            <asp:templatefield headertext="Header1">
               <asp:label id="lbl2" runat="server" text="<%Eval("Databasefiled2") %>"></asp:label>
            </asp:templatefield>
            <asp:templatefield headertext="Header1">
               <asp:label id="lbl3" runat="server" text="<%Eval("Databasefiled3") %>"></asp:label>
            </asp:templatefield>
            </columns>
         
            </asp:gridview>
            <asp:button id="BtnClose" runat="server" text="Ok" style="margin-left:176px;" />
            <asp:button id="Button2" runat="server" style="display: none;" />
        </asp:panel>
</asp:button>

protected void btnSearch_Click(object sender, EventArgs e)
   {
       //Bind your data from database using ado.net
       this.ModalPopupExtender1.Show();
   }