In this aspx code example the Timer inside UpdatePanel in ListView doesn't make async refresh. In this code it refreshes the whole page like AJAX doesn't exists here. What should I do to remove this problem ?
<form id="form1" runat="server">
<div>
<asp:ScriptManager ID="ScriptManager1" runat="server"></asp:ScriptManager>
<asp:Label ID="Label1" runat="server" Text="SIMPLE FIELD"></asp:Label>
<br />
<asp:ListView ID="DataListView" runat="server">
<ItemTemplate>
<asp:UpdatePanel ID="UpdatePanel1" runat="server">
<ContentTemplate>
<asp:Timer ID="Timer1" runat="server" Interval="500"></asp:Timer>
<asp:Label ID="Label2" runat="server" Text="AJAX"></asp:Label>
</ContentTemplate>
</asp:UpdatePanel>
</ItemTemplate>
</asp:ListView>
</div>
</form>
You should wrap the entire ListView in the UpdatePanel.
<asp:UpdatePanel ID="UpdatePanel1" runat="server">
<ContentTemplate>
<asp:ListView ID="DataListView" runat="server">
<ItemTemplate>
<asp:Timer ID="Timer1" runat="server" Interval="500"></asp:Timer>
<asp:Label ID="Label2" runat="server" Text="AJAX"></asp:Label>
</ItemTemplate>
</asp:ListView>
</ContentTemplate>
</asp:UpdatePanel>
I think there might be an issue where because the ListView doesn't do any rendering of its own, the UpdatePanel can't figure out the "parent" item to update. I think it's an unfortunate consequence of the design of the UpdatePanel.
I would recommend trying to put the UpdatePanel inside its own container control, such as an and see if that produces the correct result.
Related
<form runat="server" id="from1">
<asp:ScriptManager ID="ScriptManager1" runat="server"></asp:ScriptManager>
<asp:UpdatePanel ID="UpdatePanel1" runat="server">
<ContentTemplate>
<script src='https://www.google.com/recaptcha/api.js'></script>
<asp:Panel runat="server" ID="pnlSiteQuestions">
>>>>> CONTROLS removed for brevity <<<<<
<asp:Button ID="btnContinue" runat="server" Text="Continue" OnClick="btnContinue_Click" ValidationGroup="Questions" />
</asp:Panel>
</ContentTemplate>
</asp:UpdatePanel>
<asp:Panel ID="pnlNotRequired" runat="server" Visible="false">
Sorry you do not qualify.
</asp:Panel>
<asp:Panel runat="server" ID="pnlAdditionalDetails" Visible="false">
<asp:ValidationSummary runat="server" ID="ValidationSummary1" />
Name
<asp:RequiredFieldValidator runat="server" ID="ValidatorName" ControlToValidate="ContactFormNameTextBox" ErrorMessage="Name is required" CssClass="ErrorClass">Required</asp:RequiredFieldValidator>
<asp:TextBox runat="server" ID="txtName" />
<div class="g-recaptcha" data-sitekey="ABC123"></div>
<asp:Button runat="server" ID="button1" Text="Confirm" OnClick="button1_Click" />
</asp:Panel>
</form>
I have the above form and decided to add an update panel. When a user clicks Continue, it goes to a database and determines if the user qualifies. If not pnlNotRequired message is displayed otherwise pnlAdditionalDetails is displayed.
Everything is/was working until i added the update panel. So removing the UP has everything working.
I tried adding a trigger but i didnt fully understand how it should be configured as i dont completely understand why this is occurring?
No Javascript errors listed either. Anyway to overcome this issue?
Update panel should cover all panels. Add property to update panel "UpdateMode='Conditional'" than add trigger block
I have an AJAX tab container that contains two tab panels.
The problem when I fire an event on the second tab it reloads the first tab.
Any help? Suggestions? below is a sample of the aspx code
<AJAX:TabContainer runat="server" ID="tcMain" ActiveTabIndex="0">
<AJAX:TabPanel runat="server" ID="tpTab1" TabIndex="1">
<HeaderTemplate>
Tab1
</HeaderTemplate>
<ContentTemplate>
<div runat="server" id="div1">
<asp:UpdatePanel ID="upTab1" runat="server">
<ContentTemplate>
//entry and events
</ContentTemplate>
</asp:UpdatePanel>
</div>
</ContentTemplate>
</AJAX:TabPanel>
<AJAX:TabPanel runat="server" ID="tpTab2" TabIndex="2">
<HeaderTemplate>
Tab2
</HeaderTemplate>
<ContentTemplate>
<div runat="server" id="div2">
<asp:UpdatePanel ID="upTab2" runat="server">
<ContentTemplate>
// entry and events
</ContentTemplate>
</asp:UpdatePanel>
</div>
</ContentTemplate>
</AJAX:TabPanel>
</AJAX:TabContainer>
Most likely this is because of page post-back happening.you can manage the data using ViewState property this link may solve your issue HElP
.
In my ascx page I have two panel,I trying to change these panels inside an update panel.but the page load is going on each click on radio button.here is my code
<asp:ScriptManager ID="ScriptManager1" runat="server">
</asp:ScriptManager>
<asp:UpdatePanel ID="UpdatePanel1" runat="server">
<ContentTemplate>
<asp:Panel ID="Panel2" runat="server" >
<asp:RadioButtonList runat="server" ID="radioListAnswers" RepeatDirection="Horizontal" AutoPostBack="true" ClientIDMode="Static" onselectedindexchanged="radioListAnswers_SelectedIndexChanged">
</asp:RadioButtonList>
</asp:Panel>
</ContentTemplate>
</asp:UpdatePanel>
<asp:UpdatePanel ID="UpdatePanel2" runat="server">
<Triggers>
<asp:AsyncPostBackTrigger ControlID="radioListAnswers" EventName="SelectedIndexChanged"/>
</Triggers>
<ContentTemplate>
<asp:Panel ID="Panel1" runat="server" Visible="false">
<div> Thanks</div>
</asp:Panel>
</ContentTemplate>
</asp:UpdatePanel>
here is my code behind
void radioListAnswers_SelectedIndexChanged(object sender, EventArgs e)
{
panel2.Visible=false;
panel1.Visible=true;
}
on click on each radio button the page is reloading.How can we over come this.
Thanks in advance for help.
i hope this will help. Pls check this link
https://msdn.microsoft.com/en-us/library/bb398867(v=vs.140).aspx
Basically I have this situation
Page >
Update Panel >
User Control >
List View >
User Control (Within item template) >
Update Panel
When I click on a button within the inner most update panel, I want the content of the update panel to update. This isn't happening. However, the click handler is being hit fine asynchronously. The update panel just doesn't want to update.
Code - I've created a simple test web app that replicates the problem, and shared it on my google drive: UpdatePanelInListViewTest.zip, but here's the markup:
Page:
<asp:ScriptManager ID="ScriptManager1" runat="server">
</asp:ScriptManager>
<asp:UpdatePanel ID="ajaxParent" runat="server" UpdateMode="Conditional">
<ContentTemplate>
<uc1:ListUserControl ID="ListUserControl1" runat="server" />
</ContentTemplate>
</asp:UpdatePanel>
List User Control:
<%# Control Language="C#" AutoEventWireup="true" CodeBehind="ListUserControl.ascx.cs" Inherits="UpdatePanelInListViewTest.ListUserControl" %>
<%# Register src="MiniWidget.ascx" tagname="MiniWidget" tagprefix="uc1" %>
<asp:ListView ID="lstTest" runat="server">
<ItemTemplate>
Item
<uc1:MiniWidget ID="MiniWidget1" runat="server" />
</ItemTemplate>
</asp:ListView>
Mini Widget User Control
<%# Control Language="C#" AutoEventWireup="true" CodeBehind="MiniWidget.ascx.cs" Inherits="UpdatePanelInListViewTest.MiniWidget" %>
<asp:UpdatePanel ID="ajaxWidget" runat="server" UpdateMode="Conditional">
<ContentTemplate>
<asp:LinkButton ID="lnkTest" runat="server" onclick="lnkTest_Click">Test</asp:LinkButton>
<asp:Label ID="lblTest" runat="server" Text=""></asp:Label>
</ContentTemplate>
</asp:UpdatePanel>
I've tried different permutations of this; i.e. having the button outside the panel and adding a trigger etc but I just cannot get it to update.
It appears that because the user control is within an item template of the parent list view it causes the update panel to not update for some reason...
The problem is to do with when you call the databind method within ListUserControl.
Moving lstTest.DataBind(); so that it executes within the Page_Load rather than the Page_PreRender fixes the issue for your simple test web app.
have u tried:
<asp:UpdatePanel ID="ajaxPanel" runat="server" ChildrenAsTriggers="true" UpdateMode="Conditional">
<Triggers>
<asp:AsyncPostBackTrigger ControlID="btnTest" />
</Triggers>
<ContentTemplate>
<asp:Label ID="Label1" runat="server" Text="Label"></asp:Label>
<asp:Button ID="btnTest" runat="server" Text="Test" onclick="btnTest_Click" />
</ContentTemplate>
</asp:UpdatePanel>
I have a button on Page 1 and when the button click event occurs, I had to do some process that takes around 2-3 seconds. So, I want to Put a Loading Image in Center and disable all other controls on the Page 1.
I tried using UpdatePanel :
<asp:ScriptManager ID="ScriptManager1" runat="server">
</asp:ScriptManager>
<asp:UpdatePanel ID="UpdatePanel1" runat="server">
<ContentTemplate>
<asp:Button runat="server" Text="Button" onclick="Unnamed1_Click" />
<asp:Label runat="server" Text="Label" ID="lbl"></asp:Label>
</ContentTemplate>
</asp:UpdatePanel>
<asp:UpdateProgress ID="UpdateProgress1" runat="server" AssociatedUpdatePanelID="UpdatePanel1" >
<ProgressTemplate>
<div id="IMGDIV1" align="center" valign="middle" runat="server" style="position: absolute;visibility:visible;vertical-align:middle;border-style:none;border-color:black;background-color:transparent;">
<asp:Image ID="Image1" runat="server" ImageUrl="~/ajax-loader (1).gif" />
</div>
</ProgressTemplate>
</asp:UpdateProgress>
But the controls did not get disabled. Any Solution or Javascript ??
Also I want that it should work if want to stay on the same page.
why dont yu use telerik radgrid loading panel ?
http://www.telerik.com/help/aspnet-ajax/ajax-center-loadingpanel.html