UpdatePanel中的控件未更新 [英] Control in UpdatePanel is not getting Updated
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问题描述
我使用带有某些控件的UpdatePanel.当我单击按钮时，它会创建一个睡眠.这一次，我单击第二个按钮，其处理程序成功执行异步.但是其中一个标签不会更新.为什么?
< body > ;
< 表单 =" form1" =" 服务器" < asp:ScriptManager ID =" runat 服务器" < asp:UpdatePanel ChildrenAsTriggers =" ID UpdatePanel1 " =" < contenttemplate >
< asp:Button 运行 =" 文本 PostBackFirst " ID btnPostF"
span> onclick =" btnPostF_Click" >
< asp:Button 运行 =" 文本 PostBackSecond " ID btnPostS"
span> onclick =" btnPostS_Click" >
< asp:Button 运行 =" 文本 AbortPostBack " ID btnAbort"
span> OnClientClick =" >
< asp:Label ID =" runat 服务器" 文本 " < asp:Label ID =" runat 服务器" 文本 " < /contenttemplate >
< /form >
< /body >
受保护的 void btnPostF_Click(对象发件人，EventArgs e)
{
System.Threading.Thread.Sleep( 4000 );
Label1.Text = " ;
}
受保护的 无效 btnPostS_Click(对象发件人，EventArgs e)
{
System.Threading.Thread.Sleep( 4000 );
Label2.Text = " ;
}
解决方案
我认为两个标签的autopostback = true都可以正常工作. />
事情表现正常.让我解释一下它是如何工作的-
假设您单击第一个按钮，则单击事件是单击事件，它休眠4秒钟.现在，如果您在睡眠状态下通过单击第三个按钮来中止帖子，则可以.然后它将不会继续进行该事件.如果等待4秒钟，则可以看到标签已更新为所需的值.与第二个按钮相同.
I use an UpdatePanel with some controls. When I click on the button, it creates a sleep. In this time I click on second button, its handlers execute async successfully. But one of the labels does not get updated. Why?
<body>
<form id="form1" runat="server">
<asp:ScriptManager ID="ScriptManager1" runat="server">
<asp:UpdatePanel ChildrenAsTriggers="true" ID="UpdatePanel1" runat="server" >
<contenttemplate>
<asp:Button runat="server" Text="PostBackFirst" ID="btnPostF"
onclick="btnPostF_Click"/>
<asp:Button runat="server" Text="PostBackSecond" ID="btnPostS"
onclick="btnPostS_Click"/>
<asp:Button runat="server" Text="AbortPostBack" ID="btnAbort"
OnClientClick="Sys.WebForms.PageRequestManager.getInstance().abortPostBack();
alert('Postback Cancelled');"/>
<asp:Label ID="Label1" runat="server" Text="">
<asp:Label ID="Label2" runat="server" Text="">
</contenttemplate>
</form>
</body>
protected void btnPostF_Click(object sender, EventArgs e)
{
System.Threading.Thread.Sleep(4000);
Label1.Text = "PostBack 1 Completed";
}
protected void btnPostS_Click(object sender, EventArgs e)
{
System.Threading.Thread.Sleep(4000);
Label2.Text = "PostBack 2 Completed";
}
解决方案
i think autopostback=true for the two labels will work fine..
Hi,
Things are behaving correctly. Let me explain how it is working-
Suppose you click on the first button, on click it comes to the click event and it sleeps for 4 seconds. Now while its in sleep if you abort the post back by clicking third button. Then it will not proceed with the event. If you wait for 4 second then you can see the label is updated with the desired value. Same with second button.
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