简单 GridView AJAX 局部刷新分页例子@孟宪会
2011-08-28 02:43
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<%@ Page Language="C#"
%>
<%@ Import Namespace="System.Data"
%>
<%@ Import Namespace="System.Data.OleDb"
%>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<script
runat="server">
int PageIndex
=
1;
private String ConnectionString = @"Provider=Microsoft.Jet.OLEDB.4.0;Data
Source=|DataDirectory|MengXianHui.mdb;";
public int TotalCount
=
0;
public int PageItem
=
5;
System.Data.DataView CreateDataSourceByXianhuiMeng()
{
Int32.TryParse(Request.QueryString["Page"],
out PageIndex);
OleDbCommand cmd;
String sql;
OleDbConnection cn =
new OleDbConnection(ConnectionString);
cn.Open();
// 由于是 Access 数据库，我们只进行简单的分页。对于性能要求较高的地方，请自行采取其他方法，比如存储过程等。
sql =
"SELECT COUNT(*) FROM [Document]";
cmd =
new OleDbCommand(sql, cn);
// 总的记录数
TotalCount
= Convert.ToInt32(cmd.ExecuteScalar());
//当前页的序号
if (PageIndex
<
1) PageIndex
=
1;
int PageCount
= (int)Math.Ceiling((double)(TotalCount)
/ PageItem);
if (PageIndex
> PageCount) PageIndex
= PageCount;
int startRecord
= (PageIndex
-
1)
* PageItem;
sql =
"SELECT DocumentId,DocumentGuid,Title,CreateDate FROM [Document] ORDER BY [DocumentId] DESC";
OleDbDataAdapter da =
new OleDbDataAdapter(sql, cn);
DataSet ds =
new DataSet();
da.Fill(ds, startRecord, PageItem, "Document");
cn.Close();
return ds.Tables[0].DefaultView;
}
protected void Page_Load(object sender, EventArgs e)
{
if (String.IsNullOrEmpty(Request.QueryString["Page"]))
{
//首次加载显示页面内容，并进行初始化参数。
CreateDataSourceByXianhuiMeng();
Page.ClientScript.RegisterStartupScript(Page.GetType(), "js",
"Pager(1)",
true);
}
else
{
Response.ClearContent();
GridView1.DataSource = CreateDataSourceByXianhuiMeng();
GridView1.DataBind();
System.Text.StringBuilder sb =
new System.Text.StringBuilder();
System.IO.StringWriter sw =
new System.IO.StringWriter(sb);
HtmlTextWriter htw =
new HtmlTextWriter(sw);
GridView1.RenderControl(htw);
Response.Write(sb.ToString());
Response.End();
}
}
/// 添加这个override void VerifyRenderingInServerForm(Control control)，是为了避免出现
/// 类型“GridView”的控件“GridView1”必须放在具有 runat=server 的窗体标记内。
/// 的异常
public override
void VerifyRenderingInServerForm(Control control)
{ }
</script>
<html
xmlns="http://www.w3.org/1999/xhtml">
<head
runat="server">
<title>简单 AJAX 局部刷新分页例子</title>
<script
type="text/javascript">
function GetData(p) {
var h
= window.XMLHttpRequest
?
new window.XMLHttpRequest() :
new ActiveXObject("MSXML2.XMLHTTP");
h.open("GET",
'<%=Request.FilePath %>?Page='
+ p
+
"&"
+ Date.parse(new
Date()), true);
h.onreadystatechange =
function() {
if (h.readyState
==
4) {
if (h.status
==
200) {
document.getElementById("_Containter").innerHTML
= h.responseText;
}
}
}
h.send(null);
}
///
/// 具有分页功能的函数。
///
function Pager(CurrentPage) {
GetData(CurrentPage);
var TotalRows
=
<%=TotalCount
%>;
var Step
=
3;
var PageItem
=
<%=PageItem
%>;
if (TotalRows
<
1) {
TotalPage =
0;
}
else {
TotalPage = Math.ceil(TotalRows
/ PageItem)
}
var PagerContent
=
"共
"
+ TotalPage
+
" 页 每页
"
+ PageItem
+
" 条
";
var leftStep
= CurrentPage
- Step;
var rightStep
= CurrentPage
+ Step;
if (leftStep
<
1) leftStep
=
1;
if (rightStep
> TotalPage) rightStep
= TotalPage;
if (CurrentPage
>
1) PagerContent
+=
"<a href='#' onclick='Pager(1);return false;'>首页</a> <a href='' onclick='Pager("
+ (CurrentPage
-
1)
+
");return false;'>上一页</a>
"
for (var
i = leftStep; i
<= rightStep; i++)
{
if (i
== CurrentPage) {
PagerContent +=
" <strong style='color:red'>"
+ i
+
"</strong>"
}
else {
PagerContent +=
" <a href='#' onclick='Pager("
+ i
+
");return false;'>"
+ i
+
"</a>
"
}
}
if (rightStep
< TotalPage) PagerContent
+=
"<a href='' onclick='Pager("
+ (CurrentPage
+
1)
+
");return false;'>下一页</a> <a href='' onclick='Pager("
+ TotalPage
+
");return false;'>末页</a> "
document.getElementById("_Pager1").innerHTML=
document.getElementById("_Pager2").innerHTML
= PagerContent;
}
alert("页面首次加载弹出的标记。")
</script>
</head>
<body>
<form
id="form1" runat="server">
<div
id="_Pager1" style="padding: 10px; text-align: center"></div>
<div
id="_Containter">
<asp:GridView
ID="GridView1" runat="server" AutoGenerateColumns="false"
Width="80%">
<HeaderStyle
BackColor="#EEEEEE"
/>
<Columns>
<asp:BoundField
DataField="DocumentId"
/>
<asp:HyperLinkField
HeaderText="文章标题" DataNavigateUrlFields="DocumentGuid" DataTextField="Title"
DataNavigateUrlFormatString="http://dotnet.aspx.cc/article/{0}/read.aspx"
/>
<asp:BoundField
HeaderText="发布时间" DataField="CreateDate"
/>
</Columns>
</asp:GridView>
</div>
<div
id="_Pager2" style="padding: 10px; text-align: center"></div>
</form>
</body>
</html>
%>
<%@ Import Namespace="System.Data"
%>
<%@ Import Namespace="System.Data.OleDb"
%>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<script
runat="server">
int PageIndex
=
1;
private String ConnectionString = @"Provider=Microsoft.Jet.OLEDB.4.0;Data
Source=|DataDirectory|MengXianHui.mdb;";
public int TotalCount
=
0;
public int PageItem
=
5;
System.Data.DataView CreateDataSourceByXianhuiMeng()
{
Int32.TryParse(Request.QueryString["Page"],
out PageIndex);
OleDbCommand cmd;
String sql;
OleDbConnection cn =
new OleDbConnection(ConnectionString);
cn.Open();
// 由于是 Access 数据库，我们只进行简单的分页。对于性能要求较高的地方，请自行采取其他方法，比如存储过程等。
sql =
"SELECT COUNT(*) FROM [Document]";
cmd =
new OleDbCommand(sql, cn);
// 总的记录数
TotalCount
= Convert.ToInt32(cmd.ExecuteScalar());
//当前页的序号
if (PageIndex
<
1) PageIndex
=
1;
int PageCount
= (int)Math.Ceiling((double)(TotalCount)
/ PageItem);
if (PageIndex
> PageCount) PageIndex
= PageCount;
int startRecord
= (PageIndex
-
1)
* PageItem;
sql =
"SELECT DocumentId,DocumentGuid,Title,CreateDate FROM [Document] ORDER BY [DocumentId] DESC";
OleDbDataAdapter da =
new OleDbDataAdapter(sql, cn);
DataSet ds =
new DataSet();
da.Fill(ds, startRecord, PageItem, "Document");
cn.Close();
return ds.Tables[0].DefaultView;
}
protected void Page_Load(object sender, EventArgs e)
{
if (String.IsNullOrEmpty(Request.QueryString["Page"]))
{
//首次加载显示页面内容，并进行初始化参数。
CreateDataSourceByXianhuiMeng();
Page.ClientScript.RegisterStartupScript(Page.GetType(), "js",
"Pager(1)",
true);
}
else
{
Response.ClearContent();
GridView1.DataSource = CreateDataSourceByXianhuiMeng();
GridView1.DataBind();
System.Text.StringBuilder sb =
new System.Text.StringBuilder();
System.IO.StringWriter sw =
new System.IO.StringWriter(sb);
HtmlTextWriter htw =
new HtmlTextWriter(sw);
GridView1.RenderControl(htw);
Response.Write(sb.ToString());
Response.End();
}
}
/// 添加这个override void VerifyRenderingInServerForm(Control control)，是为了避免出现
/// 类型“GridView”的控件“GridView1”必须放在具有 runat=server 的窗体标记内。
/// 的异常
public override
void VerifyRenderingInServerForm(Control control)
{ }
</script>
<html
xmlns="http://www.w3.org/1999/xhtml">
<head
runat="server">
<title>简单 AJAX 局部刷新分页例子</title>
<script
type="text/javascript">
function GetData(p) {
var h
= window.XMLHttpRequest
?
new window.XMLHttpRequest() :
new ActiveXObject("MSXML2.XMLHTTP");
h.open("GET",
'<%=Request.FilePath %>?Page='
+ p
+
"&"
+ Date.parse(new
Date()), true);
h.onreadystatechange =
function() {
if (h.readyState
==
4) {
if (h.status
==
200) {
document.getElementById("_Containter").innerHTML
= h.responseText;
}
}
}
h.send(null);
}
///
/// 具有分页功能的函数。
///
function Pager(CurrentPage) {
GetData(CurrentPage);
var TotalRows
=
<%=TotalCount
%>;
var Step
=
3;
var PageItem
=
<%=PageItem
%>;
if (TotalRows
<
1) {
TotalPage =
0;
}
else {
TotalPage = Math.ceil(TotalRows
/ PageItem)
}
var PagerContent
=
"共
"
+ TotalPage
+
" 页 每页
"
+ PageItem
+
" 条
";
var leftStep
= CurrentPage
- Step;
var rightStep
= CurrentPage
+ Step;
if (leftStep
<
1) leftStep
=
1;
if (rightStep
> TotalPage) rightStep
= TotalPage;
if (CurrentPage
>
1) PagerContent
+=
"<a href='#' onclick='Pager(1);return false;'>首页</a> <a href='' onclick='Pager("
+ (CurrentPage
-
1)
+
");return false;'>上一页</a>
"
for (var
i = leftStep; i
<= rightStep; i++)
{
if (i
== CurrentPage) {
PagerContent +=
" <strong style='color:red'>"
+ i
+
"</strong>"
}
else {
PagerContent +=
" <a href='#' onclick='Pager("
+ i
+
");return false;'>"
+ i
+
"</a>
"
}
}
if (rightStep
< TotalPage) PagerContent
+=
"<a href='' onclick='Pager("
+ (CurrentPage
+
1)
+
");return false;'>下一页</a> <a href='' onclick='Pager("
+ TotalPage
+
");return false;'>末页</a> "
document.getElementById("_Pager1").innerHTML=
document.getElementById("_Pager2").innerHTML
= PagerContent;
}
alert("页面首次加载弹出的标记。")
</script>
</head>
<body>
<form
id="form1" runat="server">
<div
id="_Pager1" style="padding: 10px; text-align: center"></div>
<div
id="_Containter">
<asp:GridView
ID="GridView1" runat="server" AutoGenerateColumns="false"
Width="80%">
<HeaderStyle
BackColor="#EEEEEE"
/>
<Columns>
<asp:BoundField
DataField="DocumentId"
/>
<asp:HyperLinkField
HeaderText="文章标题" DataNavigateUrlFields="DocumentGuid" DataTextField="Title"
DataNavigateUrlFormatString="http://dotnet.aspx.cc/article/{0}/read.aspx"
/>
<asp:BoundField
HeaderText="发布时间" DataField="CreateDate"
/>
</Columns>
</asp:GridView>
</div>
<div
id="_Pager2" style="padding: 10px; text-align: center"></div>
</form>
</body>
</html>
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