excel怎么将分页单独保存 为DataGrid自定义分页添加自定义导航和分页信息
为DataGrid自定义分页添加自定义导航和分页信息
在上一篇文章中我讲到了对DataGrid实行自定义分页 这可以避免为了显示一页数据而获取整个数据记录集 从而提高分页效率 不过使用的导航还是DataGrid自带的数字连接或简单的上一页 下一页 而且看不到总页数 总记录数之类的信息 下面就为他增加我们所需要的部分先来看看修改后的分页显示 截图如下
(图一)
使用的数据源同上一篇文章(中DataGrid控件的自定义分页)相同 都是访问Northwind库 为了独立开来这里还是把存储过程列了一下
CREATE PROCEDURE [GetCustomersDataPage]
@PageIndex INT
@PageSize INT
@RecordCount INT OUT
@PageCount INT OUT
AS
SELECT @RecordCount = COUNT(*) FROM Customers
SET @PageCount = CEILING(@RecordCount * / @PageSize)
DECLARE @SQLSTR NVARCHAR( )
IF @PageIndex = OR @PageCount <=
SET @SQLSTR =N SELECT TOP +STR( @PageSize )+
CustomerID CompanyName Address Phone FROM Customers ORDER BY CustomerID DESC
ELSE IF @PageIndex = @PageCount
SET @SQLSTR =N SELECT * FROM ( SELECT TOP +STR( @RecordCount @PageSize * @PageIndex )+
CustomerID CompanyName Address Phone FROM Customers ORDER BY CustomerID ASC ) TempTable ORDER BY CustomerID DESC
ELSE
SET @SQLSTR =N SELECT TOP +STR( @PageSize )+ * FROM ( SELECT TOP +STR( @RecordCount @PageSize * @PageIndex )+
CustomerID CompanyName Address Phone FROM Customers ORDER BY CustomerID ASC ) TempTable ORDER BY CustomerID DESC
EXEC (@SQLSTR)
GO
下面就就把代码贴了一下
Aspx文件代码如下
<%@ Page language= c# Codebehind= DataGridCustomPaging aspx cs AutoEventWireup= false Inherits= ZZ AspnetPaging DataGridCustomPaging %>
<!DOCTYPE HTML PUBLIC //W C //DTD HTML Transitional//EN >
<HTML>
<HEAD>
<title>DataGridPaging</title>
<meta content= Microsoft Visual Studio NET name= GENERATOR >
<meta content= C# name= CODE_LANGUAGE >
<meta content= JavaScript name= vs_defaultClientScript >
<meta content= name= vs_targetSchema >
</HEAD>
<body>
<form id= Form method= post runat= server >
<TABLE id= Table NumberType= Negative= False HasSpace= False SourceValue= UnitName= pt w:st= on > pt:chmetcnv> cellSpacing= cellPadding= width= align= center
border= >
<TR>
<TD><asp:datagrid id= DataGrid runat= server AllowPaging= True AllowCustomPaging= True Width= % >
<FooterStyle Font Size= :chmetcnv TCSC= NumberType= Negative= False HasSpace= False SourceValue= UnitName= pt w:st= on > pt :chmetcnv> ></FooterStyle>
<HeaderStyle Font Size= :chmetcnv TCSC= NumberType= Negative= False HasSpace= False SourceValue= UnitName= pt w:st= on > pt :chmetcnv> ></HeaderStyle>
<PagerStyle Visible= False Font Size= :chmetcnv TCSC= NumberType= Negative= False HasSpace= False SourceValue= UnitName= pt w:st= on > pt :chmetcnv> Mode= NumericPages ></PagerStyle>
</asp:datagrid></TD>
</TR>
<TR>
<TD>
<TABLE id= Table NumberType= Negative= False HasSpace= False SourceValue= UnitName= pt w:st= on > pt:chmetcnv> cellSpacing= cellPadding= width= %
align= center border= >
<TR>
<TD ><asp:linkbutton id= LBtnFirst runat= server CommandName= First >首页</asp:linkbutton>
<asp:linkbutton id= LBtnPrev runat= server CommandName= Prev >上一页</asp:linkbutton>
<asp:linkbutton id= LBtnNext runat= server CommandName= Next >下一页</asp:linkbutton>
<asp:linkbutton id= LBtnLast runat= server CommandName= Last >尾页</asp:linkbutton></TD>
<TD>第<asp:literal id= LtlPageIndex runat= server ></asp:literal>页 共<asp:literal id= LtlPageCount runat= server ></asp:literal>页
每页<asp:Literal id= LtlPageSize runat= server ></asp:Literal>条 共<asp:Literal id= LtlRecordCount runat= server ></asp:Literal>条
</TD>
</TR>
</TABLE>
</TD>
</TR>
</TABLE>
</form>
</body>
</HTML>
Aspx cs文件代码如下
using System;
using System Collections;
using System ComponentModel;
using System Data;
using System Drawing;
using System Web;
using System Web SessionState;
using System Web UI;
using System Web UI WebControls;
using System Web UI HtmlControls;
using System Data SqlClient;
using System Configuration;
namespace ZZ AspnetPaging
{
public class DataGridCustomPaging : System Web UI Page
{
private int pageCount;
private int recordCount;
protected System Web UI WebControls LinkButton LBtnFirst;
protected System Web UI WebControls LinkButton LBtnPrev;
protected System Web UI WebControls LinkButton LBtnNext;
protected System Web UI WebControls LinkButton LBtnLast;
protected System Web UI WebControls Literal LtlPageIndex;
protected System Web UI WebControls Literal LtlPageCount;
protected System Web UI WebControls Literal LtlPageSize;
protected System Web UI WebControls Literal LtlRecordCount;
protected System Web UI WebControls DataGrid DataGrid ;
private void Page_Load(object sender System EventArgs e)
{
if(!Page IsPostBack)
{
DataGridDataBind();
}
}
//绑定数据
private void DataGridDataBind()
{
DataSet ds = GetCustomersData(PageIndex PageSize ref recordCount ref pageCount);
this DataGrid VirtualItemCount = RecordCount;
this DataGrid DataSource = ds;
this DataGrid DataBind();
SetPagingState();
}
#region Web 窗体设计器生成的代码
override protected void OnInit(EventArgs e)
{
InitializeComponent();
base OnInit(e);
}
private void InitializeComponent()
{
this LBtnFirst Click += new System EventHandler(this LBtnNavigation_Click);
this LBtnPrev Click += new System EventHandler(this LBtnNavigation_Click);
this LBtnNext Click += new System EventHandler(this LBtnNavigation_Click);
this LBtnLast Click += new System EventHandler(this LBtnNavigation_Click);
this Load += new System EventHandler(this Page_Load);
}
#endregion
private static DataSet GetCustomersData(int pageIndex int pageSize ref int recordCount ref int pageCount)
{
string connString = ConfigurationSettings AppSettings[ ConnString ];
SqlConnection conn = new SqlConnection(connString);
SqlCommand m = new SqlCommand( GetCustomersDataPage conn);
m Parameters Add(new SqlParameter( @PageIndex SqlDbType Int));
m Parameters[ ] Value = pageIndex;
m Parameters Add(new SqlParameter( @PageSize SqlDbType Int));
m Parameters[ ] Value = pageSize;
m Parameters Add(new SqlParameter( @RecordCount SqlDbType Int));
m Parameters[ ] Direction = ParameterDirection Output;
m Parameters Add(new SqlParameter( @PageCount SqlDbType Int));
m Parameters[ ] Direction = ParameterDirection Output;
m CommandType = CommandType StoredProcedure;
SqlDataAdapter dataAdapter = new SqlDataAdapter(m);
DataSet ds = new DataSet();
dataAdapter Fill(ds);
recordCount = (int)m Parameters[ ] Value;
pageCount = (int)m Parameters[ ] Value;
return ds;
}
private void LBtnNavigation_Click(object sender System EventArgs e)
{
LinkButton btn = (LinkButton)sender;
switch(btn CommandName)
{
case First :
PageIndex = ;
break;
case Prev ://if( PageIndex > )
PageIndex = PageIndex ;
break;
case Next ://if( PageIndex < PageCount )
PageIndex = PageIndex + ;
break;
case Last :
PageIndex = PageCount ;
break;
}
DataGridDataBind();
}
/// <summary>
/// 控制导航按钮或数字的状态
/// </summary>
public void SetPagingState()
{
if( PageCount <= )//( RecordCount <= PageSize )//小于等于一页
{
this LBtnFirst Enabled = false;
this LBtnPrev Enabled = false;
this LBtnNext Enabled = false;
this LBtnLast Enabled = false;
}
else //有多页
{
if( PageIndex == )//当前为第一页
{
this LBtnFirst Enabled = false;
this LBtnPrev Enabled = false;
this LBtnNext Enabled = true;
this LBtnLast Enabled = true;
}
else if( PageIndex == PageCount )//当前为最后页
{
this LBtnFirst Enabled = true;
this LBtnPrev Enabled = true;
this LBtnNext Enabled = false;
this LBtnLast Enabled = false;
}
else //中间页
{
this LBtnFirst Enabled = true;
this LBtnPrev Enabled = true;
this LBtnNext Enabled = true;
this LBtnLast Enabled = true;
}
}
this LtlPageSize Text = PageSize ToString();
this LtlRecordCount Text = RecordCount ToString();
if(RecordCount == )
{
this LtlPageCount Text = ;
this LtlPageIndex Text = ;
}
else
{
this LtlPageCount Text = PageCount ToString();
this LtlPageIndex Text = (PageIndex + ) ToString();
}
}

public int PageCount
{
get
{
return this DataGrid PageCount;
}
}
public int PageSize
{
get
{
return this DataGrid PageSize;
}
}
public int PageIndex
{
get
{
return this DataGrid CurrentPageIndex;
}
set
{
this DataGrid CurrentPageIndex = value;
}
}
public int RecordCount
{
get
{
return recordCount;
}
}
}
lishixinzhi/Article/program/net/201311/12572