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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Similar Messages:
Mar 25, 2010
My popup panel is disappearing everytime the timer ticks in an updatepanel.How can i solve this problem please friends.
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Jan 19, 2011
I have a quite strange situation where I have the following code:
[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):
[Code]....
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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Jan 29, 2011
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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Feb 1, 2011
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)
I set the timer up to call a function, but not sure how to go about refreshing the placeholder with a different ascx file. I'm sure i'll be using UpdatePanel to do this, but haven't been able to figure this out. Easy to replace a value in a label using AsyncPostBack trigger, but nothing on how to achieve this.
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Aug 10, 2010
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:
[code]....
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.
page:
[Code]....
Code:
[Code]....
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Jan 29, 2010
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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Apr 23, 2010
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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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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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">
<ContentTemplate>
<%--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'"
[Code]....
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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:Timer>
<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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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"
ontick="GameClock_Tick">
</asp:Timer>
<asp:UpdatePanel ID="ItemsUpdatePanel" runat="server" UpdateMode="Conditional" ChildrenAsTriggers="false">
<Triggers>
NOTE THE TRIGGER IS COMMENTED OUT
<%--<asp:AsyncPostBackTrigger ControlID="GameClock" EventName="Tick" />--%>
</Triggers>
<ContentTemplate>
<asp:ListView ID="PlayerItems" runat="server" GroupItemCount="7"
onitemdatabound="PlayerItems_ItemDataBound">
<LayoutTemplate>
<table border="1" cellpadding="2" cellspacing="0" runat="server" id="tblProducts">
<tr runat="server" id="groupPlaceholder">
</tr>
</table>
</LayoutTemplate>
<ItemTemplate>
<td id="Td1" runat="server" style="vertical-align:top; text-align:left; height:100%;">
<div>
<div id="category" runat="server">
<asp:Panel ID="ItemPanel" runat="server">
</asp:Panel>
</div>
</div>
</td>
</ItemTemplate>
<GroupTemplate>
<tr runat="server" id="productRow">
<td runat="server" id="itemPlaceholder"></td>
</tr>
</GroupTemplate>
</asp:ListView>
</ContentTemplate>
</asp:UpdatePanel>
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
itemPanel.Controls.Add(firstLiteral);
foreach (Delegate del in myItem.Actions.Items)
{
Literal firstItLit = new Literal();
firstItLit.Text += "<li>";
itemPanel.Controls.Add(firstItLit);
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;
itemPanel.Controls.Add(btn);
Literal secondItLit = new Literal();
secondItLit.Text += "</li>";
itemPanel.Controls.Add(secondItLit);
}
Literal btnLiteral = new Literal();
btnLiteral.Text += "</ul>";
btnLiteral.Text += "</li>";
btnLiteral.Text += "</ul>";
btnLiteral.Text += "</div>";
itemPanel.Controls.Add(btnLiteral);
Panel panel = (Panel)(e.Item.FindControl("ItemPanel"));
panel.Controls.Add(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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Dec 16, 2010
I have an update panel that has a timer set as the AsyncPostBackTrigger.In this Update Panel I have a repeater and in the repeater I have a few buttons which have on click events.The on click of these buttons does not appear to fire until the timer has tickedI have tried debugging and this is what seems to be happening, either way it takes ages for the button click to actually fire.
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Nov 25, 2010
VS2010 ( Vb.net ).I have a masterpage that contains a gridview, giving stats and information on client files sent to us. This gridview is updated by means of a timer control every 10 seconds. In my grid I have an image field, to display either a tick .. if everything is ok or a cross for any problems.When the timer control timer event forces a gridview databind every 10 seconds.When the page first loads, i get the default red Cross in the gridview imagefield, however when the timer loops forces a 'databind' I lose the redCross and it is replaced with the default image control ( as if no url is set ) . Then I get a server 404 error.I am using the OnDataBound event to fire my vb sub. I have commented out evertything just to get a solid starting point but im still getting errors.
[code]...
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Jan 12, 2011
I used ajax tabcontainer and 7 tabs in it.It works fine on my locahost but when i deployed it on server it doesn't show tabs background..it shows only labels as tab names.
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Apr 6, 2010
In pages that have a viewstate that spans 10-15KB what would be an optimal value for
<pages maxPageStateFieldLength="">
in the web.config in order to reduce the risk of potential truncation leading to viewstate validation errors?
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Nov 3, 2010
I have an ASP.NET form with several update panels. All works great.I use a timer and have it handle some periodic upates. That works correctly too. However, I appear to get an error when I leave the page open running in the debugger. Specifically the above JScript error 12030.I'm not clear how to find the source but I assume it is because my page has logged out. If I refresh I go back to my login page.So, does this sound like the cause? If so, how to I address this?
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Mar 11, 2010
I am currently using a asp.net 2.0 with visual studio 2005.
I am trying to build a web application using ajax.
but when I drag the ajax updatepanel on asp.net page it is not resizable,so how should i put other controls on it?
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Oct 14, 2010
i am using a TabContainer and at each TabPanel i have embed an UpdatePanel in order to update each tab alone.
this is my code:
[Code]....
the problem is that it makes several seconds to update each tab (the same time for every tab) and i asume that this is happening because it updates all the TabContainer and not the selected Tab.
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May 25, 2010
I'll be starting a complete re-write of a system in the coming weeks. I'll be using ASP.NET MVC 2.I'm still trying to determine what I should be using as far as TDD, mocking, and IOC is concerned. I was thinking:
VSTEST for writing my TDD tests (or possibly nUnit) Moq as my mocking framework (for creating doubles and fakes) Moq for IOC development Not sure exactly what the ideal setup should be and I'm continuing to research what's available. I'd like some feedback from the community on the most optimal toolsets for TDD, mocking, and IOC.
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Mar 30, 2011
What is the best method to cache the following? I am creating an intranet web application template that will display the message, e.g., Good Morning, Justin Satyr! near the top of my master page header. Obviously, I will have to determine whether to show Morning, Afternoon or Evening. For clarity, my code is below:
string partOfDay;
var hours = DateTime.Now.Hour;
if (hours > 16)
{
partOfDay = "evening";
}
else if (hours > 11)
{
partOfDay = "afternoon";
}
else
{
partOfDay = "morning";
}
I do not want to re-determine this on each page load because that seems moderately redundant and because I have to poll a SQL server to retrieve the user's full name. What is the best way to cache this nformation? If I cache it for the length of the session, then if the user begins using the application at 11:00 AM and finishes at 3:00 PM, it will still say Good Morning. Is the best thing to do simply re-determine the M/A/E word each page load and cache the person's full name for the session? Or is there a better way?
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Aug 12, 2010
i want to know if the only way to get information from database and transform them into objects is with a datareader or with a dataadapter and them looping throw the datarows, cause i have a lot of records in the table and i have to find the fastest way to do it. (like 10,000,000 records).
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Sep 1, 2010
I have a requirement where I would not know the columns and any result set information at design-time, so I'd be generating the data-display control dynamically.What is the most suitable way to display this type of information on-the-fly in a table/grid like structure on an ASP.NET page considering the following parameters (in order of importance):
Performance
Extensibility
Usability
I know I can dynamically generate a gridview/repeater/listview control but what I'd like to understand is which option (from stated ones or any other beyond these) would be an optimal solution..S. Paging and Sorting are part of desired functionalities, but can be overlooked if the solution is overwhelming. :)
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Jan 20, 2011
I have two updatepanels on my site (upanProfileSearch and upanMemberList). When I hit the button in the upanProfileSearch it should bind the Data Items in the gridview in upanMemberList and here make a RowFilter on the text in upanProfileSearch. When I make a run to curser, I can see, it happens. It makes a RowFilter. but it doesn't update the gridview. Can anyone tell me why it doesn't update? I have UpdateMode="Always" and RenderMode="inline" on both UpdatePanels.
[Code]....
[Code]....
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