Как сделать заголовок gridview фиксированным при прокрутке главной страницы ?

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Привет

У меня есть проблема с фиксированным заголовком в asp.net с главной страницей

Пожалуйста, посоветуйте мне

Спасибо

Мейден

Что я уже пробовал:

<asp:Content ID="Content1" ContentPlaceHolderID="head" Runat="Server">
   
</asp:Content>
<asp:Content ID="Content2" ContentPlaceHolderID="ContentPlaceHolder1" Runat="Server">
    
<div class="card  card-darkblue">
    <div class="card-header">
        <h3 class="card-title"><asp:Label ID="lblaction" runat="server" Text="Property Master"></asp:Label></h3>
    </div>
</div>
<asp:UpdatePanel id="UpdatePanel1" runat="server">
    <ContentTemplate>
        <fieldset>

                <div class="row">
                    <div class="col-lg-3">
                        <asp:TextBox ID="txtSearch" runat="server" CssClass="form-control textcolor" placeholder="search"></asp:TextBox>
                    </div>
                    <div class="col-lg-7">
                        <asp:Button ID="btnSearch" runat="server" Text="Search" CssClass="btn btn-info btnsize" />
                        <asp:Button ID="btnNew" runat="server" Text="Add" CssClass="btn btn-info btnsize"  />
                        <asp:Button ID="btnEdit" runat="server" Text="Edit" CssClass="btn btn-info btnsize"  />
                        
                    </div>
                </div>
                 <br />   
           <div>

                <div class="row">
                   <div class="col-lg-12">
                            <asp:GridView ID="GridView1" runat="server" CssClass="gridview" AutoGenerateColumns="False" 

                                BackColor="White" BorderColor="#CCCCCC" BorderStyle="None" BorderWidth="1px" CellPadding="3" 

                                PageSize="15">
                            <Columns>
                                <asp:CommandField ShowSelectButton="True">
                                <ItemStyle Width="50px" />
                                </asp:CommandField>
                                <asp:BoundField DataField="id" HeaderText="ID"/>
                                <asp:BoundField DataField="code" HeaderText="Code"/>
                                <asp:BoundField DataField="ProjectCode" HeaderText="Project Code"/>
                                <asp:BoundField DataField="PTNo" HeaderText="PT No"/>
                                <asp:BoundField DataField="LotNo" HeaderText="LotNo"/>
                                <asp:BoundField DataField="Category" HeaderText="Category"/>
                                <asp:BoundField DataField="LandType" HeaderText="Land Type"/>
                                <asp:BoundField DataField="Propertytype" HeaderText="Property Type"/>
                                <asp:BoundField DataField="District" HeaderText="District"/>
                                <asp:BoundField DataField="Measurement_Type" HeaderText=""/>
                                <asp:BoundField DataField="LandArea" HeaderText="Area"/>
                                <asp:BoundField DataField="State" HeaderText="State"/>
                                <asp:BoundField DataField="Status" HeaderText="Status"/>

                            </Columns>
                            <FooterStyle BackColor="White" ForeColor="#000066" />
                            <HeaderStyle BackColor="#006699" Font-Bold="True" ForeColor="White" />
                            <PagerStyle BackColor="White" ForeColor="#000066" HorizontalAlign="Left" />
                                <RowStyle ForeColor="#000066" />
                            <SelectedRowStyle BackColor="#669999" Font-Bold="True" ForeColor="White" />
                            <SortedAscendingCellStyle BackColor="#F1F1F1" />
                            <SortedAscendingHeaderStyle BackColor="#007DBB" />
                            <SortedDescendingCellStyle BackColor="#CAC9C9" />
                            <SortedDescendingHeaderStyle BackColor="#00547E" />
                        </asp:GridView>
                    </div>
                </div>


        </fieldset>
    </ContentTemplate>
</asp:UpdatePanel>
</asp:Content>

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