How To Show records of gridview while typing in textbox

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ASP.NET

.NET

SqlDataSource

I have placed searching text box in accordion header outside bounds of updatepanel.
inside update panel I have placed gridview,sqldatasource and trigger tags.This is my source:

<asp:Content ID="Content2" ContentPlaceHolderID="placecontent" runat="Server">
    <asp:ScriptManager ID="ScriptManager1" runat="server">
    </asp:ScriptManager>



                <div id="accordion">

<asp:Accordion ID="Accordion1" runat="server" SelectedIndex="-1" FadeTransitions="true" FramesPerSecond="100" AutoSize="None" HeaderCssClass="AccordionHeader" ContentCssClass="AccordionContent" TransitionDuration="200">
    <Panes>
        <asp:AccordionPane ID="NormalSearch" runat="server">
            <Header>
                <div align="left">
        <asp:Panel ID="PnlSearchAll" runat="server">
            <table>
                <tr>
                    <td>
                        <asp:Label ID="LblSearchAll" runat="server" Text="Search All Columns: " Font-Names="Calibri" Font-Size="Medium"></asp:Label>
                    </td>
                    <td>
                        <asp:TextBox ID="TxtSearch" runat="server" Font-Names="Calibri" Font-Size="Medium" OnTextChanged="TxtSearch_TextChanged"></asp:TextBox>
                    </td>
                </tr>
            </table>
       </asp:Panel>
        </div>
            </Header>
            <Content>

            </Content>
        </asp:AccordionPane>
        </Panes>
    </asp:Accordion>
        </div>
    <asp:UpdatePanel ID="updtpnl1" runat="server">
        <ContentTemplate>
            <center>

<center>





        <div id="GrdView">
                <asp:Panel ID="PnlAdvanced" runat="server">
                    <center>
                        <table>
                      <tr>
                                <td colspan="2">
                                    <asp:GridView ID="GrdSummery" runat="server" AutoGenerateColumns="False" GridLines="None"
            AllowPaging="True"
            CssClass="mGrid"
            PagerStyle-CssClass="pgr"
            AlternatingRowStyle-CssClass="alt" AllowSorting="true" DataSourceID="dsGridview" Width="900px">
                            <AlternatingRowStyle CssClass="alt" />
                            <Columns>
                            <asp:BoundField DataField="companyname" HeaderText="Supplier_Name" SortExpression="companyname">

                                <HeaderStyle HorizontalAlign="Center" VerticalAlign="Middle" Width="300px" />
                                <ItemStyle HorizontalAlign="Center" VerticalAlign="Middle" Width="300px" />
                            </asp:BoundField>

                            <asp:BoundField DataField="billno" HeaderText="Bill_No" SortExpression="billno">

                                <HeaderStyle HorizontalAlign="Center" VerticalAlign="Middle" Width="180px" />
                                <ItemStyle HorizontalAlign="Center" VerticalAlign="Middle" Width="180px" />
                            </asp:BoundField>
                            <asp:BoundField DataField="totalprice" HeaderText="Total_Price" SortExpression="totalprice">

                                <HeaderStyle HorizontalAlign="Center" VerticalAlign="Middle" Width="80px" />
                                <ItemStyle HorizontalAlign="Center" VerticalAlign="Middle" Width="80px" />
                            </asp:BoundField>
                            <asp:BoundField DataField="billdate" HeaderText="Bill_Date" SortExpression="billdate">
                            <HeaderStyle Font-Names="Calibri" Font-Size="Small" HorizontalAlign="Center" VerticalAlign="Middle" />
                            <ItemStyle Font-Names="Calibri" Font-Size="Small" HorizontalAlign="Center" VerticalAlign="Middle" />
                                <HeaderStyle HorizontalAlign="Center" VerticalAlign="Middle" />
                                <ItemStyle HorizontalAlign="Center" VerticalAlign="Middle" />
                            </asp:BoundField>
                            <asp:BoundField DataField="purchasetype" HeaderText="Purchase_Type" SortExpression="purchasetype">

                                <HeaderStyle HorizontalAlign="Center" VerticalAlign="Middle" />
                                <ItemStyle HorizontalAlign="Center" VerticalAlign="Middle" />
                            </asp:BoundField>
                            <asp:BoundField DataField="extranotes" HeaderText="Remarks" SortExpression="extranotes">

                                <HeaderStyle HorizontalAlign="Center" VerticalAlign="Middle" />
                                <ItemStyle HorizontalAlign="Center" VerticalAlign="Middle" />
                            </asp:BoundField>
                        </Columns>

                            <PagerStyle CssClass="pgr" />
                    </asp:GridView>
                    <asp:SqlDataSource ID="dsGridview" runat="server" ConnectionString="<%$ ConnectionStrings:akdmbilldbconnectionstring %>"
       SelectCommand="SELECT SupplierMaster.companyname,BillMaster.billno,BillMaster.totalprice,BillMaster.purchasetype,BillMaster.extranotes,convert(varchar,BillMaster.billdate,103) as billdate FROM SupplierMaster INNER JOIN BillMaster ON SupplierMaster.companyid = BillMaster.companyid order by BillMaster.billdate ASC" FilterExpression="companyname like '%{0}%' or billno like '%{1}%' or totalprice like '%{2}%' or purchasetype like '%{3}%' or extranotes like '%{4}%' or billdate like '%{5}%'">
       <FilterParameters>
           <asp:ControlParameter Name="companyname" ControlID="Txtsearch" PropertyName="Text" />
           <%--<asp:ControlParameter Name="billid" ControlID="TxtSearch" PropertyName="Text" />--%>
           <asp:ControlParameter Name="billno" ControlID="Txtsearch" PropertyName="Text" />
           <asp:ControlParameter Name="totalprice" ControlID="Txtsearch" PropertyName="Text" />
           <asp:ControlParameter Name="purchasetype" ControlID="Txtsearch" PropertyName="Text" />
           <asp:ControlParameter Name="extranotes" ControlID="Txtsearch" PropertyName="Text" />
           <asp:ControlParameter Name="billdate" ControlID="Txtsearch" PropertyName="Text" />
       </FilterParameters>
   </asp:SqlDataSource>
                                   </td>
                          </tr>
                            </table>
                        </center>
                    </asp:Panel>
            </div

>

</ContentTemplate>
        <Triggers>
                <asp:AsyncPostBackTrigger ControlID="Txtsearch" EventName="TextChanged" />
            </Triggers>
    </asp:UpdatePanel>

                    </asp:Content>

Below is My code Behind :

Protected Sub Page_Load(sender As Object, e As EventArgs) Handles Me.Load
        ' Find control on page.
        
        
        TxtSearch.Attributes.Add("onkeyup", "setTimeout('__doPostBack(\'" + TxtSearch.ClientID + "\',\'\')', 0);")
        ''Dim str As String = TextBox1.ClientID.Replace("_", "$")
        If Not IsPostBack Then
            GrdSummery.DataBind()
        End If
        'BtnSearch_Click(sender, e)
        ' GrdSummery.Visible = True
    End Sub

Protected Sub TxtSearch_TextChanged(sender As Object, e As EventArgs) Handles TxtSearch.TextChanged

       SearchString = TxtSearch.Text
   End Sub

I am getting Error :
Could not find control 'Txtsearch' in ControlParameter 'companyname'.

Any Help Would be appreciated.