Материал из .Net Framework эксперт
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Customizing a client-side error message.
<%@ Page Language="C#" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<script runat="server">
protected void btnSubmit_Click(object sender, EventArgs e)
{
throw new Exception("Server Error");
}
protected void sm1_AsyncPostBackError(object sender, AsyncPostBackErrorEventArgs e)
{
sm1.AsyncPostBackErrorMessage = "A server error occurred";
}
</script>
<html xmlns="http://www.w3.org/1999/xhtml">
<head id="Head1" runat="server">
<title>UpdatePanel Error Server</title>
<style type="text/css">
.errorMessage
{
background-color: Yellow;
color: Red;
}
</style>
</head>
<body>
<form id="form1" runat="server">
<asp:ScriptManager
id="sm1"
OnAsyncPostBackError="sm1_AsyncPostBackError"
Runat="server" />
<span id="spanError" class="errorMessage"></span>
<asp:UpdatePanel
id="up1"
runat="server">
<ContentTemplate>
<asp:Button
id="btnSubmit"
Text="Submit"
OnClick="btnSubmit_Click"
Runat="server" />
</ContentTemplate>
</asp:UpdatePanel>
</form>
<script type="text/javascript">
var prm = Sys.WebForms.PageRequestManager.getInstance();
prm.add_endRequest( prm_endRequest );
function prm_endRequest(sender, args)
{
var spanError = $get("spanError");
if (args.get_error())
{
args.set_errorHandled(true);
spanError.innerHTML = "Could not complete your request";
}
else
{
spanError.innerHTML = "";
}
}
</script>
</body>
</html>
