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[英]ASP.NET and AJAX: Complete postback with a asp:Button inside an UpdatePanel
[英]How to use Asp.Net Ajax UpdatePanel inside an usercontrol
我有一个非常简单的用户控件,如下所示:
<%@ Control Language="C#" AutoEventWireup="true" CodeBehind="WebUserControl1.ascx.cs" Inherits="tebimir.sections.WebUserControl1" %>
<asp:UpdatePanel ID="UpdatePanel1" runat="server">
<ContentTemplate>
<asp:Button ID="Button1" runat="server" Text="Button" OnClick="Button1_Click" />
<asp:Label ID="Label1" runat="server" Text="Label"></asp:Label>
</ContentTemplate>
<Triggers>
<asp:AsyncPostBackTrigger ControlID="Button1" EventName="Click" />
</Triggers>
</asp:UpdatePanel>
我有一个像这样的页面ajax.aspx:
<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="ajax.aspx.cs" Inherits="tebimir.ajax" %>
<%@ Register Src="~/sections/WebUserControl1.ascx" TagPrefix="uc1" TagName="WebUserControl1" %>
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title></title>
</head>
<body>
<form id="form1" runat="server">
<div>
<asp:ScriptManager ID="ScriptManager1" runat="server"></asp:ScriptManager>
<uc1:WebUserControl1 runat="server" ID="WebUserControl1" />
</div>
</form>
</body>
</html>
这是Button1点击代码:
protected void Button1_Click(object sender, EventArgs e)
{
Label1.Text = DateTime.Now.ToString();
}
我想将标签文本更新为当前日期时间而不刷新页面,但是每次单击按钮页面时都会刷新。 为什么?
您的用户控件中是否还有其他触发器,因为我没有看到</asp:UpdatePanel>
的结束标记?我创建了一个全新的ASP.NET Web表单Web应用程序,并创建了以下用户控件,它可以正常工作很好(不刷新):
用户控件:
<%@ Control Language="C#" AutoEventWireup="true" CodeBehind="WebUserControl1.ascx.cs" Inherits="StackOverflowClean.WebUserControl1" %>
<asp:UpdatePanel ID="UpdatePanel1" runat="server">
<ContentTemplate>
<asp:Button ID="Button1" runat="server" Text="Button" OnClick="Button1_Click" />
<asp:Label ID="Label1" runat="server" Text="Label"></asp:Label>
</ContentTemplate>
<Triggers>
<asp:AsyncPostBackTrigger ControlID="Button1" EventName="Click" />
</Triggers>
</asp:UpdatePanel>
调用用户控件的页面:
<%@ Register Src="~/WebUserControl1.ascx" TagPrefix="uc1" TagName="WebUserControl1" %>
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title></title>
</head>
<body>
<form id="form1" runat="server">
<div>
<asp:ScriptManager ID="ScriptManager1" runat="server"></asp:ScriptManager>
<uc1:WebUserControl1 runat="server" id="WebUserControl1" />
</div>
</form>
</body>
</html>
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