如何让datagrid的表头始终在可视

创建固定表头、表格体滚动的DataGrid
http://lucky_elove.www1.dotnetplayground.com/Exam/ShowFixedHeader.aspx

在使用DataGrid时，有时候需要表头表头固定、表格体的内容可以滚动，下面的代码就是实现这个功能的代码。查看例子ShowFixedHeader.aspx<%@ Page Language="vb" EnableViewState="False" AutoEventWireup="false" Codebehind="ShowFixedHeader.aspx.vb"
Inherits="aspxWeb.mengxianhui.com.ShowFixedHeader"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML>
  <HEAD>
    <title id="lucky_elove" runat="server"></title>
    <meta name="GENERATOR" content="Microsoft Visual Studio.NET 7.0">
    <meta name="CODE_LANGUAGE" content="Visual Basic 7.0">
    <meta name="vs_defaultClientScript" content="JavaScript">
    <meta name="vs_targetSchema" content="http://schemas.microsoft.com/intellisense/ie5">
  </HEAD>
  <body MS_POSITIONING="GridLayout" leftmargin="0">
    <table align="center">
      <tr>
        <td>
          <form id="Form1" method="post" runat="server">
            <TABLE id="Table1" runat="server" cellSpacing="1" cellPadding="2" width="720" border="1"
             bgcolor="#cc6633" bordercolor="#cc9966" style="FONT-SIZE:9pt;BORDER-BOTTOM:0px">
              <TR align="center">
                <TD colspan="2" width="430"></TD>
                <TD width="190" colspan="2"></TD>
              </TR>
              <TR align="center">
                <TD width="360" bgcolor="#66cc99"></TD>
                <TD width="180" bgcolor="white"></TD>
                <TD width="140" bgcolor="#99cccc"></TD>
                <TD width="40" bgcolor="#009999"></TD>
              </TR>
            </TABLE>
            <div style="BORDER:0px;PADDING:0px;MARGIN:0px;OVERFLOW:auto;WIDTH:736px;HEIGHT:200px">
              <asp:DataGrid id="DataGrid1" width="720px" CellPadding="2" CellSpacing="1"
              BorderColor="#cc9966" Font-Size="9pt" AlternatingItemStyle-BackColor="#6699ff"
              runat="server" ShowHeader="False" AutoGenerateColumns="False">
                <Columns>
                  <asp:BoundColumn DataField="Title">
                    <ItemStyle Width="360px"></ItemStyle>
                  </asp:BoundColumn>
                  <asp:BoundColumn DataField="CreateDate">
                    <ItemStyle Width="180px" HorizontalAlign="Center"></ItemStyle>
                  </asp:BoundColumn>
                  <asp:BoundColumn DataField="pid">
                    <ItemStyle Width="140px" HorizontalAlign="Center"></ItemStyle>
                  </asp:BoundColumn>
                  <asp:BoundColumn DataField="HitCount">
                    <ItemStyle Width="40px" HorizontalAlign="Center"></ItemStyle>
                  </asp:BoundColumn>
                </Columns>
              </asp:DataGrid>
            </div>
          </form>
        </td>
      </tr>
    </table>
  </body>
</HTML>ShowFixedHeader.aspx.vbImports System
Imports System.Data
Imports System.Data.OleDbPublic Class ShowFixedHeader
  Inherits System.Web.UI.Page
  Protected WithEvents Table1 As System.Web.UI.HtmlControls.HtmlTable
  Protected WithEvents DataGrid1 As System.Web.UI.WebControls.DataGrid
  Protected WithEvents Form1 As System.Web.UI.HtmlControls.HtmlForm
  Protected WithEvents lucky_elove As HtmlControls.HtmlGenericControl
#Region " Web Form Designer Generated Code "  'This call is required by the Web Form Designer.
  <System.Diagnostics.DebuggerStepThrough()> Private Sub InitializeComponent()  End Sub  Private Sub Page_Init(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Init
    'CODEGEN: This method call is required by the Web Form Designer
    'Do not modify it using the code editor.
    InitializeComponent()
  End Sub#End Region  Private Sub Page_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
    lucky_elove.InnerText = "【孟宪会之精彩世界】 - 跨栏表头的实现"
    Table1.Rows(0).Cells(0).InnerText = "【孟宪会之精彩世界】.NET版本之最新文章"
    Table1.Rows(0).Cells(1).InnerText = "文章信息"
    Table1.Rows(1).Cells(0).InnerText = "文章标题"
    Table1.Rows(1).Cells(1).InnerText = "发布时间"
    Table1.Rows(1).Cells(2).InnerText = "所属栏目"
    Table1.Rows(1).Cells(3).InnerText = "点击率"
    Table1.Rows(0).Style.Add("color", "white")
    Table1.Rows(0).Style.Add("font-weight", "bold")
    Table1.Rows(0).Cells(0).Attributes.Add("onclick",_
     "window.open('http://lucky_elove.www1.dotnetplayground.com/')")
    Table1.Rows(0).Cells(0).Style.Add("cursor", "hand")
    Try
      Dim cnString As String = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source="_
       + Server.MapPath("Test.mdb")
      Dim cn As New OleDbConnection(cnString)
      cn.Open()
      Dim strSQL As String = "SELECT TOP 30 D.Title,D.CreateDate,S.Title as pid,D.HitCount "_
      + "FROM Document D INNER JOIN Subject S ON D.pid = S.id ORDER BY CreateDate DESC"
      Dim cmd As New OleDbCommand(strSQL, cn)
      DataGrid1.DataSource = cmd.ExecuteReader
      DataGrid1.DataBind()
      cn.Close()
      cn = Nothing
    Catch eOle As OleDbException
      Response.Write("产生错误：" + eOle.Message)
    End Try
  End Sub  Private Sub DataGrid1_ItemDataBound(ByVal sender As Object, _
  ByVal e As System.Web.UI.WebControls.DataGridItemEventArgs) Handles DataGrid1.ItemDataBound
    If e.Item.ItemType = ListItemType.Item Or e.Item.ItemType = ListItemType.AlternatingItem Then
      If e.Item.Cells(0).Text.Length > 26 Then
        e.Item.Cells(0).Attributes.Add("Title", e.Item.Cells(0).Text)
        e.Item.Cells(0).Text = e.Item.Cells(0).Text.Substring(0, 26) + "…"
      End If
      e.Item.Cells(1).Text = Format(System.Convert.ToDateTime(e.Item.Cells(1).Text),_
       "yyyy年M月d日 h点m分s秒")
    End If
  End Sub
End Class

调试易

如何让datagrid的表头始终在可视

解决方案 »