部分更新不适用于母版页
[英]Partial update doesn't work with master pages
问题描述
I am working on a C# asp.net web forms project. 
我正在研究C＃asp.net网络表单项目。 It has two master pages. 它有两个母版页。 I have an user control which reads data from database, creates an un-ordered list in html string and populates a placeholder with it. 我有一个用户控件，该控件从数据库中读取数据，在html字符串中创建无序列表，并使用它填充占位符。 This user control has to be automatically refreshed every 2 minutes. 此用户控件必须每2分钟自动刷新一次。 I have included this usercontrol on the parent master page. 我已将此用户控件包含在父母版页上。 I have the following code to refresh the user control, which I have obtained through another stackoverflow answer. 我有以下代码来刷新用户控件，该控件是通过另一个stackoverflow答案获得的。 The problem is that the entire master page refreshes, and I am not sure why. 问题是整个母版页都会刷新，我不确定为什么。
Is there a way to make that only the user control which has the UpdatePanel refreshes? 有没有办法使只有具有UpdatePanel的用户控件刷新？
Outer Master Page: 外部母版页：
<body>
<form id="frmMain" role="form" method="post" runat="server">
<div>
<uc2:PendingOrders runat="server" ID="PendingOrders" />
</div>
<asp:ContentPlaceHolder ID="MainBodyContent" runat="server">
</asp:ContentPlaceHolder>
</form>
</body>
User Control: 用户控制：
<asp:ScriptManager ID="myScriptManager" runat="server"
EnablePartialRendering="True"></asp:ScriptManager>
<asp:UpdatePanel ID="UpdatePanel1" UpdateMode = "Conditional"
runat="server">
<ContentTemplate>
<asp:Timer ID="Timer1" runat="server" Interval="20000"
OnTick="Timer1_Tick"></asp:Timer>
<asp:PlaceHolder runat="server" id="lblMyOrders"></asp:PlaceHolder>
</ContentTemplate>
<Triggers>
<asp:AsyncPostBackTrigger ControlID="Timer1" EventName="Tick" />
</Triggers>
</asp:UpdatePanel>
User Control Code behind: 后面的用户控制代码：
protected void Timer1_Tick(object sender, EventArgs e)
{
//This method creates the html string with data as an unordered list
and
//populates asp:PlaceHolder inte updatepanel
GetData();
}
2 个解决方案
解决方案1
0 2017-05-07 15:31:31
UpdatePanel1's Content will be update by Timer1_Tick. UpdatePanel1的内容将由Timer1_Tick更新。
"entire master page refreshes" means master page's Page_Load will be call while Timer1 been trigger? “整个母版页刷新”表示在触发Timer1时将调用母版页的Page_Load吗？
UpdatePanel always post entire page back server and only render UpdatePanel1's Content. UpdatePanel始终将整个页面回发到服务器，并且仅呈现UpdatePanel1的内容。
解决方案2
0 2019-03-18 09:30:44
I had the same problem, but in our project the EnablePartialRendering was set to false on the Master Page, if set to true the whole project breaks. 我遇到了同样的问题，但是在我们的项目中，如果将MasterPart页上的EnablePartialRendering设置为true，则将其设置为false。 To fix the problem, I defined another master page without ScriptManager and added the ScriptManager to the page in which I wanted to use UpdatePanels with the EnablePartialRendering attribute set to True. 为了解决该问题，我定义了另一个没有ScriptManager的母版页，并将ScriptManager添加到我想在其中使用UpdatePanels且EnablePartialRendering属性设置为True的页面上。 This fixed the problem. 这解决了问题。
<asp:ScriptManager ID="myScriptManager" runat="server" EnablePartialRendering="True"></asp:ScriptManager>
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