DataList控件功能很强大，他支持选择、编辑，实现的方法也很简单，不过最令人头疼的就是它不像DataGrid控件一样内置了分页的功能，这么好的一个控件竟然不能分页！！！确实是一个很让人头疼的事情。
不过，只是DataList没有提供内置的分页功能，但是并不表示，我们不能使用DataList控件来实现分页，既然它不给我分页功能，那只好自己动手了。
下面是全部原代码，其实用到的方法和PHP中的分页差不多，只是这里用的是DataAdapter与DataSet组合，而不是PHP中的SQL语句直接搞定。
default.aspx文件：
<%@ Page language="c#"
Codebehind="default.aspx.cs" AutoEventWireup="false"
Inherits="guestbook._default"
%>
<HTML>
<HEAD>
<title>中国BS网留言簿</title>
<HTML>
<HEAD>
<title>DataList分页</title>
<meta
name="GENERATOR" Content="Microsoft Visual Studio
7.0">
<meta name="CODE_LANGUAGE"
Content="C#">
<meta name="vs_defaultClientScript"
content="JavaScript">
</HEAD>
<body
MS_POSITIONING="GridLayout">
<form method="post"
action="default.aspx" runat="server"
ID="Form1">
<table width="100%" border="0"
cellpadding="2" cellspacing="0"
align="center">
<tr>
<td
align="middle">
<asp:DataList ID="Myguest"
RepeatColumns="1"
Runat="server">
<ItemTemplate>
<table
class="gueststyleline" border="0" cellpadding="0"
cellspacing="1" align="center"
width="610">
<tr>
<td>
<table
class="gueststyleline" border="0" cellpadding="0"
cellspacing="1" align="center"
width="610">
<tr>
<td>
<table
width="100%" border="0" cellpadding="6" cellspacing="0"
class="gueststylebg"
align="center">
<tr>
<td width="112"
align="center" height="153" valign="top">
<table
width="100%" border="0" cellspacing="0" cellpadding="0"
height="100%"
class="gueststylebg">
<tr>
<td>
<table
border="0" cellspacing="0" cellpadding="0" align="center"
height="25">
<tr>
<td
class="FILTER">
<div align="center"><font
style="LEFT: 0px; WIDTH: 100%; WORD-WRAP: break-word; 130;
0pt"><%# DataBinder.Eval(Container.DataItem,"name")
%></font></div>
</td>
</tr>
</table>
<div
align="center"><font style="LEFT: 0px; WIDTH: 100%;
WORD-WRAP: break-word; 130; 0pt"><img src="<%#
DataBinder.Eval(Container.DataItem,"face") %>" width="80"
height="90"
align="middle"></font><br>
<br>
★
<%#
DataBinder.Eval(Container.DataItem,"sex")
%>
★</div>
</td>
</tr>
</table>
</td>
<td
align="center" height="153" width="2">
<table
class="gueststyleline" width="1" height="100%" border="0"
cellpadding="0" cellspacing="0">
<tr>
<td
width="1"></td>
</tr>
</table>
</td>
<td
height="33" valign="top" width="463">
<table
width="100%" border="0" cellspacing="0" cellpadding="0"
class="gueststylebg" style="TABLE-LAYOUT: fixed"
height="20">
<tr>
<td height="14"
width="310"><img src="images/icon/subject.gif"
width="15" height="15" alt="主题">:<%#
DataBinder.Eval(Container.DataItem,"caption")
%><br>
</td>
<td width="151"
height="14"><font style="0pt"> <img
src="images/icon/posttime.gif" width="16" height="15"
alt="发表时间[北京时间]">:<%#
DataBinder.Eval(Container.DataItem,"postdate")
%></font></td>
</tr>
</table>
<hr
class="gueststylehr" size="0.1" width="100%">
<table
width="100%" border="0" cellpadding="5" cellspacing="0"
class="gueststylebg" height="45%" style="TABLE-LAYOUT:
fixed">
<tr>
<td valign="top" width="28"
align="center"><img src="images/emot/1.gif" width="16"
height="16">
</td>
<td valign="top"
width="94%" style="LEFT: 0px; WIDTH: 100%; WORD-WRAP:
break-word; 130; 0pt">
<%#
DataBinder.Eval(Container.DataItem,"content")
%>
</td>
</tr>
</table>
<table
width="100%" border="0" cellpadding="4"
cellspacing="0">
<tr>
<td
valign="top">
<hr class="gueststylehr" size="0.1"
width="100%">
<a href="<%#
DataBinder.Eval(Container.DataItem,"homepage") %>"
target="_blank"><img src="images/icon/home.gif"
width="44" height="16"
border="0"></a>
<a href=" href="http://www.chinagz.net/ip/ipsearch.cgi?ip=<%">http://www.chinagz.net/ip/ipsearch.cgi?ip=<%#
DataBinder.Eval(Container.DataItem,"ip") %>"
target="_blank"><img src="images/icon/ip.gif"
align="absmiddle" height="16"
border="0"></a>
<a href=" href="http://search.tencent.com/cgi-bin/friend/user_show_info?ln=<%">http://search.tencent.com/cgi-bin/friend/user_show_info?ln=<%#
DataBinder.Eval(Container.DataItem,"qq") %>"
target="_blank">
<img src="images/icon/qq.gif"
border="0" width="35"
height="16"></a>
<a href=" href="mailto:<">mailto:<#
DataBinder.Eval(Container.DataItem,"email") %>"><img
src="images/icon/email.gif" width="42" height="16" border="0"
alt=""></a>
<a href="javascript:;"
onClick="MM_showHideLayers("admin","","hide","postcontent","","show")">
<img
src="images/icon/postguest.gif" width="45" height="16"
border="0"></a>
</td>
</tr>
</table>
</td>
</tr>
</table>
</td>
</tr>
</table>
</td>
</tr>
</table>
</ItemTemplate>
</asp:DataList>
<BR>
</td>
</tr>
</table>
<table
width="100%" border="0" cellspacing="0" cellpadding="2"
align="center"
height="9">
<TBODY>
<tr>
<td
align="middle">
<table class="gueststyleline"
width="610" border="0" cellpadding="1" cellspacing="0"
height="18">
<tr>
<td
height="24">
<table width="100%" border="0"
cellspacing="0" cellpadding="0" class="gueststylebg"
height="18">
<tr>
<td width="35%"
align="middle" height="36">
共有<asp:Label
id="lblRecordCount" ForeColor="red" runat="server"
/>条记录 当前为<asp:Label id="lblCurrentPage"
ForeColor="red" runat="server" />/<asp:Label
id="lblPageCount" ForeColor="red" runat="server"
/>页
</td>
<td align="middle"
height="36">
<asp:LinkButton id="lbnPrevPage"
Text="上一页" CommandName="prev" runat="server"
/>
<asp:LinkButton id="lbnNextPage" Text="下一页"
CommandName="next" runat="server"
/>
</td>
</tr>
</table>
</td>
</tr>
</table>
</td>
</tr>
</TBODY>
</table>
</form>
</body>
</HTML>
注意：必须把两个LinkButton控件的Command事件改为Page_OnClick：
codebehind文件：
private void Page_Load(object sender,
System.EventArgs e)
{
PageSize=1;
Conn=
new
SqlConnection(Application["Guest_Conn"].ToString());
Conn.Open();
if(!Page.IsPostBack)
{
ListBind();
CurrentPage = 0;
ViewState["PageIndex"] = 0;
//计算总共有多少记录
RecordCount = CalculateRecord();
lblRecordCount.Text
= RecordCount.ToString();
//计算总共有多少页
PageCount = RecordCount/PageSize;
lblPageCount.Text
= PageCount.ToString();
ViewState["PageCount"] =
PageCount;
}
}
//计算总共有多少条记录
public int
CalculateRecord()
{
int intCount;
string
strCount = "select count(*) as co from
guest";
SqlCommand MyComm = new SqlCommand
(strCount,Conn);
SqlDataReader dr =
MyComm.ExecuteReader();
if(dr.Read())
{
intCount =
Int32.Parse(dr["co"].ToString());
}
else
{
intCount = 0;
}
dr.Close();
return
intCount;
}
ICollection CreateSource()
{
int StartIndex;
//设定导入的起终地址
StartIndex =
CurrentPage*PageSize;
string strSel = "Select * from
guest order by postdate desc";
DataSet ds = new
DataSet();
SqlDataAdapter MyAdapter = new
SqlDataAdapter(strSel,Conn);
MyAdapter.Fill(ds,StartIndex,PageSize,"guest");
return ds.Tables["guest"].DefaultView;
}
public void ListBind()
{
Myguest.DataSource =
CreateSource();
Myguest.DataBind();
lbnNextPage.Enabled =
true;
lbnPrevPage.Enabled =
true;
if(CurrentPage==(PageCount-1))
lbnNextPage.Enabled = false;
if(CurrentPage==0)
lbnPrevPage.Enabled = false;
lblCurrentPage.Text =
(CurrentPage+1).ToString();
}
public 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;
}
ViewState["PageIndex"] =
CurrentPage;
ListBind();
}