我在 ASP.NET 中有一个页面，上面有一些更新面板。页面加载后，我希望 updatepanels 触发 updatepanels 进行更新。
我正在使用this答案说将此 JavaScript 放在页面上。
$(document).ready(function () {
window.__doPostBack('<%= hiddenAsyncTrigger.ClientID %>', 'OnClick');
});
但是，这会导致点击事件被垃圾邮件发送，因为加载事件正在触发另一个加载...??
更新面板一切正常，问题在于页面加载后一次触发更新
最佳答案
使用客户端控件而不是服务器端:
<%@ Page Language="C#" %>
<script runat="server">
protected string CurrentTime()
{
return DateTime.Now.ToString();
}
</script>
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title>Untitled Page</title>
<script src="http://code.jquery.com/jquery-1.9.1.js"></script>
<script language="JavaScript">
$(document).ready(function () {
$("#Updater").click()
});
</script>
</head>
<body>
<form id="MyForm" runat="server">
<div>
Outside the panel: <%=CurrentTime() %>
</div>
<br />
<br />
<asp:ScriptManager ID="ScriptManager1" EnablePartialRendering="true" runat="server" />
<asp:UpdatePanel ID="panel" runat="server" UpdateMode="conditional">
<ContentTemplate>
<div>
Inside the panel: <%=CurrentTime() %>
</div>
<input type="submit" id="Updater" style="display: none" />
</ContentTemplate>
</asp:UpdatePanel>
</form>
</body>
</html>
另一种解决方案 - 没有隐藏触发器，使用 __doPostBack
<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="WebForm1.aspx.cs" Inherits="WebApplicationTest.WebForm1" %>
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head id="Head1" runat="server">
<title>Untitled Page</title>
<script src="http://code.jquery.com/jquery-1.9.1.js"></script>
<script language="JavaScript">
$(document).ready(function () {
__doPostBack('panel', '');
});
</script>
</head>
<body>
<form id="form1" runat="server">
<div>
Outside the panel: <%=CurrentTime() %>
</div>
<br />
<br />
<asp:ScriptManager ID="ScriptManager1" EnablePartialRendering="true" runat="server" />
<asp:UpdatePanel ID="panel" runat="server" UpdateMode="conditional">
<ContentTemplate>
<div>
Inside the panel: <%=CurrentTime() %>
</div>
<input type="submit" id="Updater" style="display: none" />
</ContentTemplate>
</asp:UpdatePanel>
</form>
</body>
</html>
using System.Web.UI;
using System.Web.UI.WebControls;
namespace WebApplicationTest
{
public partial class WebForm1 : System.Web.UI.Page
{
protected string CurrentTime()
{
System.Diagnostics.Debug.WriteLine("CurrentTime was called");
return DateTime.Now.ToString();
}
protected void Page_Load(object sender, EventArgs e)
{
System.Diagnostics.Debug.WriteLine("PageLoad was called");
}
}
}
关于javascript - 如何获取 ASP.NET page_load 事件来触发 AJAX UpdatePanel 更新，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/16520471/