纯脚本搞掂DataGrid表表头不动，表身滚动。

在国外其他网站看到过一些解决方案，也有类似的处理方案但是是在前台页面手写的 th ,不如这个方便:)

纯脚本搞掂DataGrid表表头不动，表身滚动。

先看效果：

孟子以前也做过这事，不过他的方法前台后台都要弄，还是VB的(^-^)，好像也不支持像我的自动生成列的DataGrid，所以还是自己动手，纯脚本搞掂，其实很简单，就几行：

        function ScrollDataGrid()
        {
            var tb = document.getElementById("tbHeader");
            var dg = document.getElementById("dgSearchResult");
            
            if(dg!= null)
            {    
                var dv = document.getElementById("dvBody");
                var th = dg.rows[0];
                for(var i = 0 ; i < th.cells.length;i++)
                    th.cells[i].width = th.cells[i].clientWidth;
                var tr = th.cloneNode(true);
                
                //tr.applyElement(tb);
                tb.createTHead();
                var tbh = tb.tHead;
                tbh.appendChild(tr);
                tr = tbh.rows[0];
                var td = tr.insertCell();
                td.style.width = 19;
                td.width = 19;
                td.innerHTML = tr.cells[0].innerHTML;
                th.style.display = 'none';
                if(dg.scrollHeight < 300 )
                    dv.style.height = dg.scrollHeight * 1 + 2;
                
                
            }

                <table width="100%" border="0" id="tbHeader" cellpadding="4" cellspacing="0">
                                        </table>
                                        <div style="OVERFLOW-Y: scroll; HEIGHT: 300px" id="dvBody">
                                            <asp:datagrid id="dgSearchResult" style="BORDER-COLLAPSE: collapse" runat="server" Width="100%" CellPadding="4" DataKeyField="编号" BorderWidth="1px" BorderStyle="Solid" BorderColor="RoyalBlue" GridLines="None">
                                                <SelectedItemStyle ForeColor="SlateGray"></SelectedItemStyle>
                                                <ItemStyle VerticalAlign="Middle"></ItemStyle>
                                                <HeaderStyle HorizontalAlign="Center"></HeaderStyle>
                                                <Columns>
                                                    <asp:ButtonColumn Text="选择" HeaderText="&lt;font face=webdings&gt;6&lt;/font&gt;" CommandName="Delete">
                                                        <HeaderStyle Wrap="False" Width="40px"></HeaderStyle>
                                                        <ItemStyle Wrap="False" HorizontalAlign="Center"></ItemStyle>
                                                        <FooterStyle Wrap="False"></FooterStyle>
                                                    </asp:ButtonColumn>
                                                </Columns>
                                            </asp:datagrid></div>