代码实现DataList控件的分页显示

约定不等于承诺〃 2022-01-16 13:31 262阅读 0赞

为DataList控件实现 记录统计 分页统计 上下页 首末页  
不多说了  
HTML代码如下：  
<asp:DataList ID="DataList1" runat="server" DataKeyField="ZhuCYHM">  
<ItemTemplate>  
BianH:  
<asp:Label ID="BianHLabel" runat="server" Text='<%\# Eval("BianH") %>'></asp:Label><br />  
ZhuCYHM:  
<asp:Label ID="ZhuCYHMLabel" runat="server" Text='<%\# Eval("ZhuCYHM") %>'></asp:Label><br />  
XingM:  
<asp:Label ID="XingMLabel" runat="server" Text='<%\# Eval("XingM") %>'></asp:Label><br />  
XingB:  
<asp:Label ID="XingBLabel" runat="server" Text='<%\# Eval("XingB") %>'></asp:Label><br />  
<br />  
</ItemTemplate>  
</asp:DataList><asp:SqlDataSource ID="SqlDataSource1" runat="server" ConnectionString="<%$ ConnectionStrings:XBMISConnectionString %>"  
SelectCommand="SELECT BianH, ZhuCYHM, XingM, XingB FROM T\_YongH"></asp:SqlDataSource>  
<br />  
<table style="width: 619px; height: 75px">  
<tr>  
<td colspan="3" rowspan="3" style="font-family: 宋体; width: 436px;">  
共<asp:label id="lblRecordCount" runat="server">Label</asp:label>条记录&nbsp; 共<asp:label id="lblPageCount" runat="server">Label</asp:label>页 当前第<asp:label id="lblCurrentPage" runat="server">Label</asp:label>页&nbsp;  
<asp:LinkButton id="lkFirstPage" runat="server" OnCommand="Page\_OnClick" CommandName="first">首页</asp:LinkButton>&nbsp;  
<asp:linkbutton id="lkPrevPage" runat="server" OnCommand="Page\_OnClick" CommandName="prev">上一页</asp:linkbutton>&nbsp;&nbsp;  
<asp:linkbutton id="lkNextPage" runat="server" OnCommand="Page\_OnClick" CommandName="next">下一页</asp:linkbutton>&nbsp;  
<asp:LinkButton id="lkLastPage" runat="server" OnCommand="Page\_OnClick" CommandName="last">尾页</asp:LinkButton>  
</td>  
</tr>  
</table>  
  
后台代码如下：  
using System;  
using System.Data;  
using System.Configuration;  
using System.Collections;  
using System.Web;  
using System.Web.Security;  
using System.Web.UI;  
using System.Web.UI.WebControls;  
using System.Web.UI.WebControls.WebParts;  
using System.Web.UI.HtmlControls;  
using System.Data.SqlClient;

public partial class DataList\_exam6 : System.Web.UI.Page  
\{  
int PageSize, RecordCount, PageCount, CurrentPage;  
protected void Page\_Load(object sender, EventArgs e)  
\{  
//每页中显示的记录数目  
PageSize = 3;  
if (!Page.IsPostBack)  
\{  
//计算总共有多少记录  
RecordCount = CalculateRecord();  
//计算总共有多少页 取整  
PageCount = RecordCount / PageSize;  
if (RecordCount % PageSize > 0)  
PageCount = PageCount + 1;  
lblPageCount.Text = PageCount.ToString();  
lblRecordCount.Text = RecordCount.ToString();  
ViewState\["PageCount"\] = PageCount;  
CurrentPage = 0;  
ViewState\["PageIndex"\] = 0;  
\}  
//DataList绑定  
DataListBind();  
\}  
//统计记录数目  
public int CalculateRecord()  
\{  
//声明一个字符串  
string sConnectionString;  
//连接数据库字符串，连接到AjaxDB数据库，用户名是sa  
sConnectionString = "Data Source=.;Initial Catalog= XBMIS;User ID=sa;";  
//创建SqlConnection数据库连接对象  
SqlConnection Conn = new SqlConnection(sConnectionString);  
//打开Conn  
Conn.Open();  
int intCount;  
SqlCommand comm = new SqlCommand("SELECT count(\*) as number FROM T\_YongH", Conn);  
SqlDataReader dr;  
dr = comm.ExecuteReader();  
if (dr.Read())  
\{  
intCount = Int32.Parse(dr\["number"\].ToString());  
\}  
else  
\{  
intCount = 0;  
\}  
dr.Close();  
return intCount;  
\}  
public void DataListBind()  
\{  
//声明一个字符串  
string sConnectionString;  
//连接数据库字符串，连接到XBMIS数据库，用户名是sa  
sConnectionString = " Data Source=.;Initial Catalog= XBMIS;User ID=sa; ";  
//创建SqlConnection数据库连接对象  
SqlConnection Conn = new SqlConnection(sConnectionString);  
//打开Conn  
Conn.Open();  
string sql;  
sql = "SELECT BianH, ZhuCYHM, XingM, XingB FROM T\_YongH";  
//创建并初始化SqlCommand对象，同时执行sql命令  
SqlDataAdapter infor = new SqlDataAdapter(sql, Conn);  
DataSet ds = new DataSet();  
//使用SqlDataAdapter的Fill方法填充DataSet  
infor.Fill(ds, "infor");  
//GridView1控件的数据绑定  
DataList1.DataSource = ds.Tables\["infor"\];  
DataList1.DataBind();

lbnNextPage.Enabled = true;  
lbnPrevPage.Enabled = true;  
if (PageCount == 0)  
\{  
lblCurrentPage.Text = "0";  
lkNextPage.Enabled = false;  
lkPrevPage.Enabled = false;  
\}  
else  
\{  
if (CurrentPage == (PageCount - 1)) lkNextPage.Enabled = false;  
if (CurrentPage == 0) lkPrevPage.Enabled = false;  
lblCurrentPage.Text = (CurrentPage + 1).ToString();  
\}  
\}  
protected void Page\_OnClick(object sender, CommandEventArgs e)  
\{  
CurrentPage = (int)ViewState\["PageIndex"\];  
PageCount = (int)ViewState\["PageCount"\];  
string cmd = e.CommandName;  
//判断cmd，以判定翻页方向  
switch (cmd)  
\{  
case "next":  
if (CurrentPage < (PageCount - 1)) CurrentPage++;  
break;  
case "prev":  
if (CurrentPage > 0) CurrentPage--;  
break;  
case "first":  
CurrentPage = 0;  
break;  
case "last":  
CurrentPage = PageCount - 1;  
break;  
\}  
ViewState\["PageIndex"\] = CurrentPage;  
DataListBind();  
\}

转载自： [\[url\]http://www.cnblogs.com/liulanglang/archive/2007/08/12/852321.html\[/url\]][url_http_www.cnblogs.com_liulanglang_archive_2007_08_12_852321.html_url]

转载于:https://blog.51cto.com/binzone/52182

[url_http_www.cnblogs.com_liulanglang_archive_2007_08_12_852321.html_url]: http://www.cnblogs.com/liulanglang/archive/2007/08/12/852321.html