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我使用帶有一些控件的updatepanel,當我點擊按鈕時,創建一個睡眠。在這個時候,我點擊第二buton,按鈕處理程序執行async successfully.but其中一個標籤不更新?更新面板中的更新控件
我有更新面板中的兩個標籤,當btnPostF按鈕點擊後,然後btnPostS按鈕, 只有lable2更新面板和lable2不更新!
<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";
}
這是什麼意思:「...只有lable2在更新面板更新和lable2不更新!!」? –