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ASPNET:DataGrid+存储过程的分页编辑代码[原创]

王朝asp·作者佚名  2006-01-09
窄屏简体版  字體: |||超大  

<%@ 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

 
 
 
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