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ASP.Net/Ajax/UpdatePanel - История изменений
2026-04-29T23:48:46Z
История изменений этой страницы в вики
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http://nfex.ru/index.php?title=ASP.Net/Ajax/UpdatePanel&diff=1910&oldid=prev
в 15:30, 26 мая 2010
2010-05-26T15:30:47Z
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http://nfex.ru/index.php?title=ASP.Net/Ajax/UpdatePanel&diff=1911&oldid=prev
Admin: 1 версия
2010-05-26T11:51:49Z
<p>1 версия</p>
<p><b>Новая страница</b></p><div>==Configure Web.Config in order to use asp:ScriptManager==<br />
<br />
<br />
<br />
<br />
<!-- start source code --><br />
<br />
<source lang="csharp"><br />
<br />
File: Default.aspx<br />
<%@ Page Language="C#" %><br />
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"<br />
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><br />
<script runat="server"><br />
protected void btnSubmit_Click(object sender, EventArgs e)<br />
{<br />
throw new Exception("Server Error");<br />
}<br />
</script><br />
<html xmlns="http://www.w3.org/1999/xhtml"><br />
<head runat="server"><br />
<title>UpdatePanel Error</title><br />
</head><br />
<body><br />
<form id="form1" runat="server"><br />
<asp:ScriptManager<br />
id="sm1"<br />
Runat="server" /><br />
<asp:UpdatePanel<br />
id="up1"<br />
runat="server"><br />
<ContentTemplate><br />
<asp:Button<br />
id="btnSubmit"<br />
Text="Submit"<br />
OnClick="btnSubmit_Click"<br />
Runat="server" /><br />
</ContentTemplate><br />
</asp:UpdatePanel><br />
</form><br />
</body><br />
</html><br />
<br />
<br />
Web.Config <br />
<br />
<configuration><br />
<system.web><br />
<customErrors mode="Off"/><br />
<compilation debug="true"/><br />
<pages><br />
<controls><br />
<add tagPrefix="asp" namespace="System.Web.UI" assembly="System.Web.Extensions, Version=1.0.61025.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" /><br />
</controls><br />
<br />
</pages> <br />
</system.web><br />
</configuration> <br />
</source><br />
<br />
<br />
<br />
<br />
==Database messages being updated asynchronously.==<br />
<br />
<br />
<br />
<br />
<!-- start source code --><br />
<br />
<source lang="csharp"><br />
<br />
<%@ Page Language="C#" %><br />
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"<br />
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><br />
<html xmlns="http://www.w3.org/1999/xhtml"><br />
<body><br />
<form id="form1" runat="server"><br />
<asp:ScriptManager ID="sm1" runat="server" /><br />
<asp:Timer ID="Timer1" Interval="5000" runat="server" /><br />
<asp:UpdatePanel ID="up1" runat="server"><br />
<Triggers><br />
<asp:AsyncPostBackTrigger ControlID="Timer1" EventName="Tick" /><br />
</Triggers><br />
<ContentTemplate><br />
Last Refresh <%= DateTime.Now.ToString("T") %><br />
<hr /><br />
<asp:ListView<br />
id="lstMessages"<br />
DataSourceID="srcMessages"<br />
Runat="server"><br />
<LayoutTemplate><br />
<div id="itemContainer" runat="server"><br />
</div><br />
</LayoutTemplate><br />
<ItemTemplate><br />
<div><br />
Posted by <%# Eval("PostedBy") %><br />
<div class="message"><br />
<%# Eval("Post") %><br />
</div><br />
</div><br />
</ItemTemplate><br />
</asp:ListView><br />
</ContentTemplate><br />
</asp:UpdatePanel><br />
<asp:ObjectDataSource<br />
id="srcMessages"<br />
TypeName="Message"<br />
SelectMethod="Select"<br />
Runat="server" /><br />
</form><br />
</body><br />
</html><br />
<br />
</source><br />
<br />
<br />
<br />
<br />
==Handling UpdatePanel Errors Gracefully==<br />
<br />
<br />
<br />
<br />
<!-- start source code --><br />
<br />
<source lang="csharp"><br />
<br />
You enable a custom error page by adding the following element to <br />
the system.web section of your web configuration file:<br />
<customErrors mode="On" defaultRedirect="ErrorPage.aspx" /><br />
<br />
File: Default.aspx<br />
<%@ Page Language="C#" %><br />
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"<br />
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><br />
<script runat="server"><br />
protected void btnSubmit_Click(object sender, EventArgs e)<br />
{<br />
throw new Exception("Server Error");<br />
}<br />
</script><br />
<html xmlns="http://www.w3.org/1999/xhtml"><br />
<head runat="server"><br />
<title>UpdatePanel Error</title><br />
</head><br />
<body><br />
<form id="form1" runat="server"><br />
<asp:ScriptManager<br />
id="sm1"<br />
Runat="server" /><br />
<asp:UpdatePanel<br />
id="up1"<br />
runat="server"><br />
<ContentTemplate><br />
<asp:Button<br />
id="btnSubmit"<br />
Text="Submit"<br />
OnClick="btnSubmit_Click"<br />
Runat="server" /><br />
</ContentTemplate><br />
</asp:UpdatePanel><br />
</form><br />
</body><br />
</html><br />
<br />
You can disable custom error pages in the case of an asynchronous postback by adding an AllowCustomErrorRedirect attribute to the ScriptManager tag, like this:<br />
<asp:ScriptManager<br />
id="sm1"<br />
AllowCustomErrorsRedirect="false"<br />
Runat="server" /><br />
<br />
Web.Config <br />
<br />
<configuration><br />
<system.web><br />
<customErrors mode="Off"/><br />
<compilation debug="true"/><br />
<pages><br />
<controls><br />
<add tagPrefix="asp" namespace="System.Web.UI" assembly="System.Web.Extensions, Version=1.0.61025.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" /><br />
</controls><br />
<br />
</pages> <br />
</system.web><br />
</configuration> <br />
</source><br />
<br />
<br />
<br />
<br />
==On the server, you can handle the ScriptManager control"s AsyncPostBackError event to customize the error message transmitted to the client.==<br />
<br />
<br />
<br />
<br />
<!-- start source code --><br />
<br />
<source lang="csharp"><br />
<br />
File: UpdatePanelErrorServer.aspx<br />
<%@ Page Language="C#" %><br />
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"<br />
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><br />
<script runat="server"><br />
protected void btnSubmit_Click(object sender, EventArgs e)<br />
{<br />
throw new Exception("Server Error");<br />
}<br />
protected void sm1_AsyncPostBackError(object sender, AsyncPostBackErrorEventArgs e)<br />
{<br />
sm1.AsyncPostBackErrorMessage = "A server error occurred";<br />
}<br />
</script><br />
<html xmlns="http://www.w3.org/1999/xhtml"><br />
<head id="Head1" runat="server"><br />
<title>UpdatePanel Error Server</title><br />
</head><br />
<body><br />
<form id="form1" runat="server"><br />
<asp:ScriptManager<br />
id="sm1"<br />
OnAsyncPostBackError="sm1_AsyncPostBackError"<br />
Runat="server" /><br />
<asp:UpdatePanel<br />
id="up1"<br />
runat="server"><br />
<ContentTemplate><br />
<asp:Button<br />
id="btnSubmit"<br />
Text="Submit"<br />
OnClick="btnSubmit_Click"<br />
Runat="server" /><br />
</ContentTemplate><br />
</asp:UpdatePanel><br />
</form><br />
</body><br />
</html><br />
<br />
</source></div>
Admin