为DataGrid添加自动编号功能

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DataGridWithLine.aspx

<%@ Page Language="vb" AutoEventWireup="false" Codebehind="DataGridWithLine.aspx.vb"
 Inherits="aspxWeb.DataGridWithLine"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML>
  <HEAD>
    <title>DataGridWithLine</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">
    <form id="Form1" method="post" runat="server">
      <asp:DataGrid id="DataGrid1" runat="server" AutoGenerateColumns="False">
        <HeaderStyle Font-Bold="True" Wrap="False" HorizontalAlign="Center"></HeaderStyle>
        <Columns>
          <asp:TemplateColumn></asp:TemplateColumn>
          <asp:BoundColumn DataField="Title"></asp:BoundColumn>
          <asp:BoundColumn DataField="CreateDate" DataFormatString="{0:yyyy-M-d h:m:s}"></asp:BoundColumn>
        </Columns>
      </asp:DataGrid>
    </form>
  </body>
</HTML>

DataGridWithLine.aspx.vb

Imports System
Imports System.Data
Imports System.Data.OleDb
Public Class DataGridWithLine
  Inherits System.Web.UI.Page
  Protected WithEvents DataGrid1 As System.Web.UI.WebControls.DataGrid

#Region " Web 窗体设计器生成的代码 "

  '该调用是 Web 窗体设计器所必需的。
  <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: 此方法调用是 Web 窗体设计器所必需的
    '不要使用代码编辑器修改它。
    InitializeComponent()
  End Sub

#End Region

  Private Sub Page_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
    DataGrid1.Columns(0).HeaderText = "序号"
    DataGrid1.Columns(1).HeaderText = "文章标题"
    DataGrid1.Columns(2).HeaderText = "创建日期"
    Dim cnString As String = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" + Server.MapPath("Test.mdb")
    Dim strSQL As String = "SELECT TOP 21 Title,CreateDate FROM Document ORDER By CreateDate DESC"
    Dim cn As New OleDbConnection(cnString)
    cn.Open()
    Dim cmd As New OleDbCommand(strSQL, cn)
    Dim db As OleDbDataReader
    db = cmd.ExecuteReader(CommandBehavior.CloseConnection)
    DataGrid1.DataSource = db
    DataGrid1.DataBind()
    cn.Close()
    cn = Nothing
    cmd = Nothing
    db.Close()
    db = Nothing
  End Sub

  Private Sub DataGrid1_ItemDataBound(ByVal sender As Object, _
  ByVal e As System.Web.UI.WebControls.DataGridItemEventArgs) Handles DataGrid1.ItemDataBound
    If e.Item.ItemIndex <> -1 Then
      e.Item.Cells(0).Text = e.Item.ItemIndex + 1
    End If
  End Sub
End Class

 

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