Partial update doesn't work with master pages
Question
I am working on a C# asp.net web forms project. It has two master pages. I have an user control which reads data from database, creates an un-ordered list in html string and populates a placeholder with it. This user control has to be automatically refreshed every 2 minutes. I have included this usercontrol on the parent master page. I have the following code to refresh the user control, which I have obtained through another stackoverflow answer. The problem is that the entire master page refreshes, and I am not sure why.
Is there a way to make that only the user control which has the UpdatePanel refreshes?
Outer Master Page:
<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:
<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:
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 answers
solution1
0 2017-05-07 15:31:31
UpdatePanel1's Content will be update by Timer1_Tick.
"entire master page refreshes" means master page's Page_Load will be call while Timer1 been trigger?
UpdatePanel always post entire page back server and only render UpdatePanel1's Content.
solution2
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. 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. This fixed the problem.
<asp:ScriptManager ID="myScriptManager" runat="server" EnablePartialRendering="True"></asp:ScriptManager>
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