AJAX :: Proper / Optimal Way To Use Updatepanel With Timer

Apr 1, 2011

If that is even the right combination of controls to use.. I have a page that will display a list of files that have been processed or processing.. its not really time sensitive, but would like for the page to refresh the gridview every say every minutelonger(not determined yet)Is that the most optimal way to accomplish this, i mean if you are on the page, i dont want you to have to hit refresh to see any new records or status changes to the existing records..

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AJAX :: Updatepanel And Timer Control?

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My popup panel is disappearing everytime the timer ticks in an updatepanel.How can i solve this problem please friends.

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I have a quite strange situation where I have the following code:


This gives a quite strange result: Every 5s my whole page gives a full postback. When I comment in (activate) the asyncpostbacktrigger, the updatepanel does not give a full postback. In the PlayerItems_ItemDataBound I have the following code (which, I do think, do not matter):


When I create a NEW updatepanel, ItemsUpdatePanel1, it does not fire a full postback without the timer. I can even start copying items from ItemsUpdatePanel to ItemsUpdatePanel1, and suddenly the full postbacks happen. I tried 2 seperate times, and they started happening at different times. I simply want the UpdatePanel NOT to give a full postback, even without a timer.

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I have a countdown timer inside updatepanel. When it reaches 00:00:00, it processes a huge amount of data and that point of time, i'd like to disable the submit button outside updatepanel. Simple btn.enabled = false is not working.

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GOAL: on a web page (vb.net) content in a placeholder will refresh with a different .ascx (user control) every 30 seconds (rotating 3 in total) and of course i dont want to refresh the whole page, just the placeholder.

I'm new at AJAX (that's my first problem - lol)

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VS 2008 Simple Image Toggle With AJAX Updatepanel And Timer

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I don't understand what the problem is with this. It should be a simple operation yet it doesn't work.

I found samples on how to do this, when I apply the sample, it doesn't work.

In my page I have this:


When I run the page, after 5 seconds it switches from the first image to the second image and never switches back to the first image.

When I debug with a break in the code-behind, it looks like the timer ticks twice for every tick. So, when the image is sample2, it then changes back to sample1 and then immediately ticks again and switches back to sample2 with no update-panel refresh in between.

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Jan 23, 2011

I cannot use asyncFileUpload as it has too many restrictions which doesn't meet our requirement.

I'm able to add a updatepanel trigger to force the Button1 to perform a postback. after the file uploaded, I need to use a timer to do different tasks and return messages back to client with the timer. That is all fine.

However, when one upload is finished. I try to do it again. The FileUpload1.HasFile is "false". I don't know why. if I remove the timer, at the second time, the HasFile is "true". I think there must be something in the timer and disable the Button1's postback.





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On the home page of my site I have an UpdatePanel with a Timer which ticks every couple of seconds. Un-related to that I have a user login forum (username / password) If you are typing your username into the textbox while the timer ticks, it takes focus off the textbox.

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I'm searching for an example with an client timer that ticks synchronous with an server timer. Also there must be a button on the client side which can reset the server timer to an default value, and with this it also resets the client timer ofcourse. I tried it myself but it seems that there is some postback delay which makes it impossible for me to make it atleast look like it goes synchronous.

I hope somebody got an example for me, the button part is really important because by pressing that button the delay comes.

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Substitute To Updatepanel And Timer Control?

Jan 19, 2010

is there any other method that is similar to updatepanel and timer control in asp.net? I need to auto refresh a "section" of the page silently like what updatpanel and timer do.

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.net - Lazy Loading Using Updatepanel And Timer In C#?

Mar 25, 2011

After loading updatepanel through Timer, i am unable to make any async request from the updatepanel.

sample aspx Code:

<asp:UpdatePanel runat="server" UpdateMode="Conditional">
<%--The Timer that causes the partial postback--%>
<asp:Timer runat="server" Interval="100" OnTick="Timer_Tick" Id="Timer1"/>
<asp:ImageButton ID="btnSaveEmployeePrevJobs" runat="server" ImageAlign="AbsBottom"
ImageUrl="~/Images/saveOff.gif" onmouseout="this.src='../Images/saveOff.gif'"


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Nov 16, 2010

I have a situation where I have a page in ASP.NET. In this page I have a RadioButtonList, which contains 5 solutions to a question. The RadioButtonList is feeded by an object, which has these solutions.I have a timer, which runs every second, to update loads of graphical controls. Everything works, BESIDES the RadioButtonList selection.This is what happends:

When I select an item in the RadioButtonList and the timer tick, the selectedIndex of the RadioButtonLIst value is 0. This means it selects the FIRST item in the list. However, IF I click an item, which has a "Yes" value in it (the value field can either have "No" or "Yes", it will stay at this item.First of all, I have NO idea why the timer re-select my RadioButtonList selection, as any other Page_Load event does nothing. And even if that makes sense, I have no idea why it just re-selects SOME of the answers..I have the following HTML code:

<asp:Timer ID="AssignmentTimer" runat="server" Interval="1000">
<asp:UpdatePanel ID="FightUpdatePnl" runat="server" UpdateMode="Always" ChildrenAsTriggers="True">[code]....

When the timer ticks, the RadioButtonList re-select item 0. This is however not consistent, and sometimes it doesn't re-select.
I'd rather it didn't re-select at all! :)

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C# - Timer Results In Updatepanel Gives Full Postback

Jan 19, 2011

I have a quite strange situation where I have the following code:

<asp:Timer ID="GameClock" runat="server" Interval="5000" Enabled="true"
<asp:UpdatePanel ID="ItemsUpdatePanel" runat="server" UpdateMode="Conditional" ChildrenAsTriggers="false">


<%--<asp:AsyncPostBackTrigger ControlID="GameClock" EventName="Tick" />--%>
<asp:ListView ID="PlayerItems" runat="server" GroupItemCount="7"
<table border="1" cellpadding="2" cellspacing="0" runat="server" id="tblProducts">
<tr runat="server" id="groupPlaceholder">
<td id="Td1" runat="server" style="vertical-align:top; text-align:left; height:100%;">
<div id="category" runat="server">
<asp:Panel ID="ItemPanel" runat="server">
<tr runat="server" id="productRow">
<td runat="server" id="itemPlaceholder"></td>

This gives a quite strange result: Every 5s my whole page gives a full postback. When I comment in (activate) the asyncpostbacktrigger, the updatepanel does not give a full postback. In the PlayerItems_ItemDataBound I have the following code (which, I do think, do not matter):

protected void PlayerItems_ItemDataBound(object sender, ListViewItemEventArgs e)
if (e.Item.ItemType == ListViewItemType.DataItem)
ListViewDataItem dataItem = e.Item as ListViewDataItem;
if (dataItem != null)
BaseItem myItem = dataItem.DataItem as BaseItem;
Panel itemPanel = new Panel();
Literal firstLiteral = new Literal();
firstLiteral.Text += "<div id='smoothmenu1' class='ddsmoothmenu'>";
firstLiteral.Text += "<ul>";
firstLiteral.Text += "<li><img src='Images/Game/Items/" + myItem.ItemImageUrl + "' />";
firstLiteral.Text += "<ul>";
// Add all events bound to item into contextmenu
foreach (Delegate del in myItem.Actions.Items)
Literal firstItLit = new Literal();
firstItLit.Text += "<li>";
MethodInfo methodInfo = del.Method;
string commandName = myItem.ItemId + "|" + methodInfo.Name;
LinkButton btn = new LinkButton();
btn.Text = methodInfo.Name;
btn.Click += new EventHandler(btn_Click);
btn.CommandName = commandName;
Literal secondItLit = new Literal();
secondItLit.Text += "</li>";
Literal btnLiteral = new Literal();
btnLiteral.Text += "</ul>";
btnLiteral.Text += "</li>";
btnLiteral.Text += "</ul>";
btnLiteral.Text += "</div>";
Panel panel = (Panel)(e.Item.FindControl("ItemPanel"));

When I create a NEW updatepanel, ItemsUpdatePanel1, it does not fire a full postback without the timer. I can even start copying items from ItemsUpdatePanel to ItemsUpdatePanel1, and suddenly the full postbacks happen. I tried 2 seperate times, and they started happening at different times.

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this is my code:


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