[英]The ASP UpdatePanel doesn't work
我嘗試使用 UpdatePanel 更新我的 aspx 頁面的一部分,但它不起作用
這是aspx頁面代碼的一部分:
<asp:ScriptManager ID="ScriptManager1" runat="server">
</asp:ScriptManager>
<asp:UpdatePanel ID="UpdatePanel1" runat="server" UpdateMode="Conditional">
<ContentTemplate>
<asp:CheckBox ID="cb1" name="cb1" runat="server" OnCheckedChanged="cb_test_CheckedChanged" AutoPostBack="true" /><label for="cb1"><%=DateTime.Now %></label>
</ContentTemplate>
</asp:UpdatePanel>
這是后面的部分代碼:
protected void cb_test_CheckedChanged(object sender, EventArgs e)
{
UpdatePanel1.Update();
}
當我嘗試單擊復選框時,不會想到 TextBox。
注意:在瀏覽器控制台中,我有:
Error: Sys. WebForms. PageRequestManagerParserErrorException: impossible to analyze the message received from the waiter(server). This error can have several possible causes: answer modified by calls(appeals) to Response. Write (), leak out of answer, HttpModules or activation of track of the waiter(server). Details: error of analysis near '
如果您將復選框放在更新面板之外,它將起作用,同時刪除 UpdatePanel1.Update(); 從代碼隱藏
<asp:CheckBox ID="cb1" name="cb1" runat="server" OnCheckedChanged="cb_test_CheckedChanged" AutoPostBack="true" /><label for="cb1">Example</label>
<asp:UpdatePanel runat="server" ID="UpdatePanel1">
<ContentTemplate>
<asp:TextBox runat="server" ID="bidon" />
</ContentTemplate>
<Triggers>
<asp:AsyncPostBackTrigger ControlID="cb1" />
</Triggers>
</asp:UpdatePanel>
protected void cb_test_CheckedChanged(object sender, EventArgs e)
{
bidon.Text = DateTime.Now.ToString();
}
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