亲密接触ASP.Net(14)

王朝asp·作者佚名  2006-01-10
窄屏简体版  字體: |||超大  

个性化分页(2)

上一节大家没有看到总的结构,这一节,我把代码全部贴出来,大家好好看看。

<%@ Page Language="C#" %>

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

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

<html>

<script language="C#" runat="server">

void Page_Load(Object sender, EventArgs e)

{

//判断是否隐藏PagerStyle-Mode

if (chk1.Checked)

{

MyDataGrid.PagerStyle.Visible=true;

}

else

{

MyDataGrid.PagerStyle.Visible=false;

}

BindGrid();

}

ICollection CreateDataSource()

{

/*

读取数据库的信息,获得DataView

*/

SQLConnection MyConnection = new

SQLConnection("server=localhost;uid=sa;pwd=123456;database=aspcn");

SQLDataSetCommand MyDataSetCommand = new SQLDataSetCommand("select * from

admin_enter order by Enter_Time desc",MyConnection);

DataSet ds= new DataSet();

MyDataSetCommand.FillDataSet(ds,"admin_enter");

return ds.Tables["admin_enter"].DefaultView;

}

void PagerButtonClick(Object sender, EventArgs e)

{

//获得LinkButton的参数值

String arg = ((LinkButton)sender).CommandArgument;

switch(arg)

{

case ("next"):

if (MyDataGrid.CurrentPageIndex < (MyDataGrid.PageCount - 1))

MyDataGrid.CurrentPageIndex ++;

break;

case ("prev"):

if (MyDataGrid.CurrentPageIndex > 0)

MyDataGrid.CurrentPageIndex --;

break;

case ("last"):

MyDataGrid.CurrentPageIndex = (MyDataGrid.PageCount - 1);

break;

default:

//本页值

MyDataGrid.CurrentPageIndex = arg.ToInt32();

break;

}

BindGrid();

}

void MyDataGrid_Page(Object sender, DataGridPageChangedEventArgs e)

{

//处理按下数字的方法

BindGrid();

}

void BindGrid()

{

//将DataView绑定到DataGrid上去

MyDataGrid.DataSource = CreateDataSource();

MyDataGrid.DataBind();

ShowStats();

}

void ShowStats()

{

//显示页面信息

lblCurrentIndex.Text = "当前页数为: " +

((int)MyDataGrid.CurrentPageIndex+1);

lblPageCount.Text = "总页数是: " + MyDataGrid.PageCount;

}

</script>

<body>

<h3><font face="Verdana">个性化的分页实例^&^</font></h3>

<form runat=server>

<ASP:DataGrid id="MyDataGrid" runat="server"

AllowPaging="True"

PageSize="10"

PagerStyle-Mode="NumericPages"

PagerStyle-HorizontalAlign="Right"

OnPageIndexChanged="MyDataGrid_Page"

BorderColor="black"

BorderWidth="1"

GridLines="Both"

CellPadding="3"

CellSpacing="0"

Font-Name="Verdana"

Font-Size="8pt"

HeaderStyle-BackColor="#aaaadd"

AlternatingItemStyle-BackColor="#eeeeee"

AutoGenerateColumns="false"

>

<property name="Columns">

<asp:BoundColumn HeaderText="工作室成员" DataField="Enter_ID" />

<asp:BoundColumn HeaderText="登陆时间" DataField="Enter_Time" />

</property>

</ASP:DataGrid>

<p>

<asp:LinkButton id="btnFirst" runat="server"

Text="首页"

CommandArgument="0"

ForeColor="navy"

Font-Name="verdana" Font-size="8pt"

OnClick="PagerButtonClick"

/>

<asp:LinkButton id="btnPrev" runat="server"

Text="前页"

CommandArgument="prev"

ForeColor="navy"

Font-Name="verdana" Font-size="8pt"

OnClick="PagerButtonClick"

/>

<asp:LinkButton id="btnNext" runat="server"

Text="后页"

CommandArgument="next"

ForeColor="navy"

Font-Name="verdana" Font-size="8pt"

OnClick="PagerButtonClick"

/>

<asp:LinkButton id="btnLast" runat="server"

Text="末页"

CommandArgument="last"

ForeColor="navy"

Font-Name="verdana" Font-size="8pt"

OnClick="PagerButtonClick"

/>

<p>

<asp:Checkbox id="chk1" runat="server"

Text="显示内置的页数"

Font-Name="Verdana"

Font-Size="8pt"

AutoPostBack="true"

/>

<p>

<table bgcolor="#eeeeee" cellpadding="6"><tr><td nowrap><font

face="Verdana" size="-2">

<asp:Label id="lblCurrentIndex" runat="server" /><br>

<asp:Label id="lblPageCount" runat="server" /><br>

</font></td></tr></table>

</form>

</body>

</html>

上面是全部的源代码,执行后的显示是:

图14-1

按下随便一个键,比如"末页"

图14-2

看,我们的程序就直接到了最后一页,即第5页,我们在下面的"当前页数"可以看到:)

我们再来点击"显示内置的页数"这个复选框,看看:

图14-3

看,我们前两节看到的那些小数字也出来了:)

 
 
 
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