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ASP.NET 中的 给上次的DataGrid分页增加些功能!

出处:互联网   整理: 软晨网（RuanChen.com）   发布: 2009-11-03   浏览: 142 ::
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<%@ Import Namespace="System.Data" %>

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

ICollection CreateDataSource() {
DataTable dt = new DataTable();
DataRow dr;

dt.Columns.Add(new DataColumn("IntegerValue", typeof(Int32)));
dt.Columns.Add(new DataColumn("StringValue", typeof(string)));
dt.Columns.Add(new DataColumn("DateTimeValue", typeof(string)));
dt.Columns.Add(new DataColumn("BoolValue", typeof(bool)));

for (int i = 0; i < 200; i++) {
dr = dt.NewRow();

dr[0] = i;
dr = "Item " + Int32.ToString(i);
dr = DateTime.Now.ToShortDateString();
dr = (i % 2 != 0) ? true : false;

dt.Rows.Add(dr);
}

DataView dv = new DataView(dt);
return dv;
}

void Page_Load(Object sender, EventArgs e) {
if (chk1.Checked) {
MyDataGrid.PagerStyle.Visible=true;
}
else {
MyDataGrid.PagerStyle.Visible=false;
}

BindGrid();
}

void PagerButtonClick(Object sender, EventArgs e) {
//used by external paging UI
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:
//page number
MyDataGrid.CurrentPageIndex = arg.ToInt32();
break;
}
BindGrid();
}

void MyDataGrid_Page(Object sender, DataGridPageChangedEventArgs e) {
//used by built-in pager. CurrentPageIndex already set
BindGrid();
}

void BindGrid() {
MyDataGrid.DataSource = CreateDataSource();
MyDataGrid.DataBind();
ShowStats();
}

void ShowStats() {
lblCurrentIndex.Text = "CurrentPageIndex is " + MyDataGrid.CurrentPageIndex;
lblPageCount.Text = "PageCount is " + MyDataGrid.PageCount;
}


</script>

<body>

<h3><font face="Verdana">Providing Alternate Paging UI</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"
/>

<p>
<asp:LinkButton id="btnPrev" runat="server"
Text="Previous page"
CommandArgument="prev"
ForeColor="navy"
Font-Name="verdana" Font-size="8pt"
OnClick="PagerButtonClick"
/>

<asp:LinkButton id="btnNext" runat="server"
Text="Next page"
CommandArgument="next"
ForeColor="navy"
Font-Name="verdana" Font-size="8pt"
OnClick="PagerButtonClick"
/>

<asp:LinkButton id="btnPage8" runat="server"
Text="Go to Page 8"
CommandArgument="7"
ForeColor="navy"
Font-Name="verdana" Font-size="8pt"
OnClick="PagerButtonClick"
/>

<asp:LinkButton id="btnFirst" runat="server"
Text="Go to the first page"
CommandArgument="0"
ForeColor="navy"
Font-Name="verdana" Font-size="8pt"
OnClick="PagerButtonClick"
/>

<asp:LinkButton id="btnLast" runat="server"
Text="Go to the last page"
CommandArgument="last"
ForeColor="navy"
Font-Name="verdana" Font-size="8pt"
OnClick="PagerButtonClick"
/>


<p>
<asp:Checkbox id="chk1" runat="server"
Text="Show built-in pager"
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&