ASP

本类阅读TOP10

·asp常用数据库连接方法和技巧
·无组件生成BMP验证码
·一些常用的辅助代码 (网络收藏)
·JavaScript实现的数据表格:冻结列、调整列宽和客户端排序
·VisualStudio.NET_2003及其 MSDN 下载地址
·ASP模拟MVC模式编程
·图片以二进制流输出到网页
·MD5加密算法 ASP版
·ASP.NET编程中的十大技巧
·改进 ASP 的字符串处理性能

分类导航
VC语言Delphi
VB语言ASP
PerlJava
Script数据库
其他语言游戏开发
文件格式网站制作
软件工程.NET开发
ASPNET:DataGrid+存储过程的分页编辑代码[原创]

作者:未知 来源:月光软件站 加入时间:2005-6-5 月光软件站

<%@ Import Namespace="System.Data.SqlClient" %>
<%@ Import Namespace="System.Data" %>

<Script Runat="Server">

Dim conNorthwind As SqlConnection
Dim strSql As String
Dim strSelect As String
Dim intStartIndex As Integer
Dim intEndIndex As Integer
Dim intRecordCount As Integer
Dim cmdSql As SqlCommand

Sub Page_Load
  btnFirst.Text = "首页"
  btnPrev.Text = "上一页"
  btnNext.Text = "下一页"
  btnLast.Text = "末页"
  conNorthwind = New SqlConnection( "Server=192.168.4.1;UID=sa;PWD=111111;Database=yourDBname" )
  If Not IsPostBack Then
    BindDataGrid
  End If
End Sub

Sub BindDataGrid
  Dim cmdSelect As SqlCommand
  Dim dtrRecordCount As SqlDataReader

  intEndIndex = dgrdProducts.PageSize
  cmdSelect = New SqlCommand( "newsPaged", conNorthwind )
  cmdSelect.CommandType = CommandType.StoredProcedure
  cmdSelect.Parameters.Add( "@PageIndex", intStartIndex )
  cmdSelect.Parameters.Add( "@PageSize ", intEndIndex )
  conNorthwind.Open()
  dtrRecordCount = cmdSelect.ExecuteReader()
  While dtrRecordCount.read()
    intRecordCount=dtrRecordCount(0)
  End While
  dgrdProducts.VirtualItemCount = (intRecordCount / dgrdProducts.PageSize)
  dtrRecordCount.NextResult()
  dgrdProducts.DataSource = dtrRecordCount
  dgrdProducts.DataBind()
  conNorthwind.Close()
End Sub

Sub dgrdProducts_PageIndexChanged( s As Object, e As DataGridPageChangedEventArgs )
  intStartIndex = e.NewPageIndex
  dgrdProducts.CurrentPageIndex = e.NewPageIndex
  BindDataGrid
End Sub
Sub PagerButtonClick(ByVal sender As Object, ByVal e As EventArgs)
  Dim arg As String = sender.CommandArgument
  Select Case arg
      Case "next"
        If (dgrdProducts.CurrentPageIndex < (dgrdProducts.PageCount - 1)) Then
           dgrdProducts.CurrentPageIndex += 1
        End If
      Case "prev"
        If (dgrdProducts.CurrentPageIndex > 0) Then
           dgrdProducts.CurrentPageIndex -= 1
        End If
      Case "last"
           dgrdProducts.CurrentPageIndex = (dgrdProducts.PageCount - 1)
      Case Else
        'page number
        dgrdProducts.CurrentPageIndex = System.Convert.ToInt32(arg)
  End Select
  intStartIndex=dgrdProducts.CurrentPageIndex
  BindDataGrid
End Sub

Sub dgrdProducts_EditCommand( s As Object, e As DataGridCommandEventArgs )
  dgrdProducts.EditItemIndex = e.Item.ItemIndex
  intStartIndex = dgrdProducts.CurrentPageIndex
  BindDataGrid
End Sub

Sub dgrdProducts_UpdateCommand( s As Object, e As DataGridCommandEventArgs )
  Dim intArticleID As Integer
  Dim txtTopic As TextBox
  Dim txtEditor As TextBox
  Dim strTopic As String
  Dim strEditor As String

  intArticleID = dgrdProducts.DataKeys( e.Item.ItemIndex )
  txtTopic = e.Item.Cells( 1 ).Controls( 0 )
  txtEditor = e.Item.Cells( 2 ).Controls( 0 )
  strTopic = txtTopic.Text
  strEditor = txtEditor.Text
  strSql = "Update Tb_Article Set Topic=@Topic, " _
   & "Editor=@Editor Where ArticleID=@ArticleID"
  cmdSql = New SqlCommand( strSql, conNorthwind )
  cmdSql.Parameters.Add( "@Topic", strTopic )
  cmdSql.Parameters.Add( "@Editor", strEditor )
  cmdSql.Parameters.Add( "@ArticleID", intArticleID )
  conNorthwind.Open()
  cmdSql.ExecuteNonQuery()
  conNorthwind.Close()
  dgrdProducts.EditItemIndex = -1
  BindDataGrid
End Sub

Sub dgrdProducts_CancelCommand( s As Object, e As DataGridCommandEventArgs )
  dgrdProducts.EditItemIndex = -1
  BindDataGrid
End Sub
</Script>

<html>
<head><title>DataGridCustomPaging.aspx</title></head>
<body>
<form Runat="Server">

<asp:DataGrid Runat="Server"
  ID="dgrdProducts"
  OnEditCommand="dgrdProducts_EditCommand"
  OnUpdateCommand="dgrdProducts_UpdateCommand"
  OnCancelCommand="dgrdProducts_CancelCommand"
  DataKeyField="A_ArticleID"
  AutoGenerateColumns="false"
  showheader="true"
  AllowPaging="True"
  AllowCustomPaging="True"
  HeaderStyle-BackColor="Salmon"
  PageSize="10"
  OnPageIndexChanged="dgrdProducts_PageIndexChanged"
  PagerStyle-Mode="NumericPages"
  AlternatingItemStyle-BackColor="#eeaaee"
  Font-Size="10pt"
  Font-Name="Verdana"
  CellSpacing="0"
  CellPadding="3"
  GridLines="Both"
  BorderWidth="1"
  BorderColor="black"
  PagerStyle-HorizontalAlign="Right">
  <AlternatingItemStyle BackColor="#EEEEEE"></AlternatingItemStyle>
  <Columns>
    <asp:BoundColumn
      HeaderText="序列号"
      DataField="ArticleID"
      ReadOnly="True" />
    <asp:BoundColumn
      HeaderText="标题"
      DataField="Topic" />
    <asp:BoundColumn
      HeaderText="编辑者"
      DataField="Editor" />
    <asp:EditCommandColumn
      EditText="Edit!"
      UpdateText="Update!"
      CancelText="Cancel!" />
 <asp:HyperLinkColumn
   HeaderText="编辑"
   DataNavigateUrlField="ArticleID"
   DataNavigateUrlFormatString="Details.aspx?id={0}"
   Text="编辑"/>
  </columns>
</asp:datagrid>
<asp:linkbutton id="btnFirst" onclick="PagerButtonClick" runat="server" Font-Name="verdana" Font-size="8pt" ForeColor="navy" CommandArgument="0"></asp:linkbutton>&nbsp;
<asp:linkbutton id="btnPrev" onclick="PagerButtonClick" runat="server" Font-Name="verdana" Font-size="8pt" ForeColor="navy" CommandArgument="prev"></asp:linkbutton>&nbsp;
<asp:linkbutton id="btnNext" onclick="PagerButtonClick" runat="server" Font-Name="verdana" Font-size="8pt" ForeColor="navy" CommandArgument="next"></asp:linkbutton>&nbsp;
<asp:linkbutton id="btnLast" onclick="PagerButtonClick" runat="server" Font-Name="verdana" Font-size="8pt" ForeColor="navy" CommandArgument="last"></asp:linkbutton>
</form>
</html>
下面是存储过程:
CREATE PROCEDURE newsPaged
(
    @PageIndex int,
    @PageSize int
)
AS
BEGIN
DECLARE @PageLowerBound int
DECLARE @PageUpperBound int
DECLARE @RowsToReturn int

-- First set the rowcount
SET @RowsToReturn = @PageSize * (@PageIndex + 1)
SET ROWCOUNT @RowsToReturn

-- Set the page bounds
SET @PageLowerBound = @PageSize * @PageIndex
SET @PageUpperBound = @PageLowerBound + @PageSize + 1

-- Create a temp table to store the select results
CREATE TABLE #PageIndex
(
    IndexId int IDENTITY (1, 1) NOT NULL,
    ArticleID int,
)

-- Insert into the temp table
INSERT INTO #PageIndex (ArticleID)
SELECT
    ArticleID
FROM
    tablename
ORDER BY
    ArticleID DESC

-- Return total count
SELECT COUNT(ArticleID) FROM tablename
-- Return paged results
SELECT
    O.ArticleID,O.Topic,Editor
FROM
    tablename O,
    #PageIndex PageIndex
WHERE
    O.ArticleID = PageIndex.ArticleID AND
    PageIndex.IndexID > @PageLowerBound AND
    PageIndex.IndexID < @PageUpperBound
ORDER BY
    PageIndex.IndexID

END
GO





相关文章

相关软件