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Fixing a Header in Datagrid

, , 25 Jun 2009 CPOL
A simple way to fix the Datagrid header using JavaScript and CSS
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="FixedHeaderDatagrid.aspx.cs" Inherits="Default2" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "">

<html xmlns="" >
<head runat="server">
    <title>Scrolling Header for Datagrid</title>
    <script type="text/javascript" language="javascript">
        function setonScroll(divObj,DgID)  // call this in onscroll event in div
            var datagrid = document.getElementById(DgID);
            var HeaderCells = datagrid.getElementsByTagName('th');
            var HeaderRow;
            if(HeaderCells == null || HeaderCells.length == 0)     // check wether any tableheader cells present in given datagrid
                var AllRows = datagrid.getElementsByTagName('tr');
                HeaderRow = AllRows[0];        
                HeaderRow = HeaderCells[0].parentNode;        
            var DivsTopPosition = parseInt(divObj.scrollTop);
       = 'absolute';
       = (parseInt(DivsTopPosition)).toString() + 'px';
                divObj.scrollTop = 0;
       = 'relative';
       = '0';
    <form id="form1" runat="server">
    <div id="Div" runat="server" style="position:relative; top:0px; left:0px; height:500px; width:250px; overflow:auto">
    <asp:DataGrid ID="dgCheckScrollingHeader" runat="server" Width="410px" AutoGenerateColumns="False" CellSpacing="1"  CellPadding="0" ForeColor="#333333" GridLines="vertical">
            <asp:TemplateColumn HeaderText="Column 1">
                    <asp:Label ID="lblCol1Data" Width="130px" runat="server" Text='<%# DataBinder.Eval(Container.DataItem,"Col1Data") %>' ></asp:Label>
                <HeaderStyle Width="150px" />
                <ItemStyle Width="150px" />
            <asp:TemplateColumn HeaderText="Column 2">
                    <asp:Label ID="lblCol2Data" Width="170px" runat="server" Text='<%# DataBinder.Eval(Container.DataItem,"Col2Data") %>' ></asp:Label>
                <HeaderStyle Width="180px" />
                <ItemStyle Width="180px" />
            <asp:TemplateColumn HeaderText="Column 3">
                    <asp:Label ID="lblCol3Data" Width="70px" runat="server" Text='<%# DataBinder.Eval(Container.DataItem,"Col3Data") %>' ></asp:Label>
                <HeaderStyle Width="80px" />
                <ItemStyle Width="80px" />
        <AlternatingItemStyle BackColor="White" />
        <ItemStyle BackColor="#EFF3FB" />
        <HeaderStyle BackColor="#507CD1" Font-Bold="True" Height="25px" Font-Size="15px" ForeColor="White" HorizontalAlign="Center" Wrap="false" />

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Web01 | 2.8.160525.2 | Last Updated 26 Jun 2009
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