ASP.NET ICallbackEventHandler和ASP.net Ajax updatepanel
|
我想在一页上使用ajax UpdatePanel和ICallbackEventHandler。每个页面将处理页面的各个部分，它们与每个页面都不相关。
如果删除UpdatePanel，则ICallbackEventHandler正常运行。如果我删除ICallbackEventHandler，则更新面板可以正常工作，但是它们根本无法工作:(
Default.aspx
<%@ Page Language=\"C#\" AutoEventWireup=\"true\" CodeBehind=\"Default.aspx.cs\" Inherits=\"WebApplication1._Default\"
EnableEventValidation=\"false\" %>
<!DOCTYPE html PUBLIC \"-//W3C//DTD XHTML 1.0 Transitional//EN\" \"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd\">
<html xmlns=\"http://www.w3.org/1999/xhtml\">
<head runat=\"server\">
<title></title>
<script src=\"http://ajax.googleapis.com/ajax/libs/jquery/1.5.1/jquery.min.js\"></script>
</head>
<body>
<script type=\"text/ecmascript\">
function BootX() {
XUpdate();
}
function XUpdate() {
X_CallServer(\"\", \"\");
}
function X_ReceiveServerData(rValue) {
$(\"#a\").html(rValue);
}
</script>
<form id=\"form1\" runat=\"server\">
<div id=\"a\">
</div>
<asp:ScriptManager runat=\"server\" ID=\"ScriptManager1\" />
<div>
<asp:Timer ID=\"Timer1\" runat=\"server\" Interval=\"100\" OnTick=\"Timer1_Tick\">
</asp:Timer>
<asp:UpdatePanel runat=\"server\" ID=\"UpdatePanel1\" UpdateMode=\"Conditional\">
<ContentTemplate>
<asp:DropDownList runat=\"server\" ID=\"ddl\">
</asp:DropDownList>
</ContentTemplate>
</asp:UpdatePanel>
</div>
</form>
<script type=\"text/ecmascript\">
BootX();
</script>
</body>
</html>
public partial class _Default : System.Web.UI.Page, ICallbackEventHandler
{
protected void Page_Load(object sender, EventArgs e)
{
String cbReference = Page.ClientScript.GetCallbackEventReference(this, \"arg\", \"X_ReceiveServerData\", \"context\", true);
String callbackScript = string.Format(\"function X_CallServer(arg, context)\" + \"{{ {0} ;}}\", cbReference);
Page.ClientScript.RegisterClientScriptBlock(this.GetType(), \"X_CallServer\", callbackScript, true);
ScriptManager1.RegisterAsyncPostBackControl(Timer1);
}
private string result = \"\";
public void RaiseCallbackEvent(string eventArgument)
{
// pretending some time consuming work
for (int i = 0; i < 1000000; i++) for (int j = 0; j < 100; j++) ;
result = \"aaaaaaaaaaaaaaaaaaaaaaaaaaaa\";
}
public string GetCallbackResult()
{
return result;
}
protected void Timer1_Tick(object sender, EventArgs e)
{
UpdatePanel1.Update();
Timer1.Enabled = false;
// pretending some time consuming work
for (int i = 0; i < 1000000; i++) for (int j = 0; j < 1000; j++) ;
ddl.Items.Add(\"Item 1\");
ddl.Items.Add(\"Item 2\");
ddl.Items.Add(\"Item 3\");
}
}
没有找到相关结果
已邀请:
1 个回复
净爽
我用了function pageLoad(sender, args) {setTimeout(\"BootX()\", 25); }