AJAX :: Webcam Streaming / Currently Using Image Control, Update Panel, Timer?
Jul 20, 2010
I'm having a problem where users with a slow connection aren't getting my image feed properly.i'm sending them new images every second to a picturebox inside an Ajax Update panel, using an Ajax Timer.so if their connection is really slow, one image doesnt load fully before the next one comes in, so they never get the whole picture...And for people with a faster connection, I would like to increase the update rate, and currently I see no way of dynamically setting the update rate.
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Similar Messages:
Mar 3, 2010
when i using timer on update panel it current.rating values = null
Why ?
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May 17, 2010
i am attempting to use javascript to update the chart, because how i have setup now causes the chart to just disappear. Here is the code i have now: I am calling the chart to page using: on default.aspx
[Code]....
Code on the dataURL_Infrasturcture_Capacity.aspx page:
[Code]....
PROBLEM: So how would i update this using an update panel and timer. Currently when i do it the chart just disappears on update. I believethis is due to the fact that i am calling a dataURL. How would i get this to work javascript?
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May 16, 2010
I am doing a countdown with a timer that runs every second. I have a scriptmanager, but how do I make it update behind the scenes so the user does not see it? I thought I could use an update panel, but I can't get it to work right.
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Mar 21, 2011
I've a tab container with 4-5 tabs on a page. On the same page, I've three update panels - one outside tab container whilst the other two lie inside two tab panels separately. Update mode of all three update panels are set to Conditional. There is a timer in the first update panel (the one outside tab container). Whenever timer ticks, the other two update panels are also being refreshed. How can I stop this?
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Nov 2, 2010
ASP.net VB timer control: in the code behind, when I change a value of a textbox on other control. It does not change if not in panel. Anyway to change a value if not in teh panel.
Sub UpdateTimer_Tick(ByVal sender
As
Object,
ByVal e
As EventArgs)Dim x
As
Integer
DateStampLabel.Text = DateTime.Now.ToString()
(L_ticks.Text= CInt(L_ticks.Text) + 1
If (cint(L_ticks.Text) = 10 Then L_start.Text
= DateTime.Now.ToString() ' reset value not in panel
l_diff.Text = DateDiff(DateInterval.Second,
CDate(L_start.Text),
CDate(DateStampLabel.Text))
End
Sub
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Nov 11, 2010
I have an Ajax timer that has an interval of 1 second and an update panel on my page. If I leave the page open and never close or refresh I notice that after 6 to 8 hours the timer stops firing. No error messages.......everything just stops. If I refresh the page everything starts working again. Are there any issues I am not aware of when running a page for a long time using the Ajax timer?
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Feb 8, 2010
I have an ASPX page with several update panels. They all have their UpdateMode="Conditional".
Some panels are refreshed when the user clicks a button and other are refreshed regularly, with a timer.
The panel refreshed with a timer launches a database query and many validations on the data. Then display the result in a panel when errors have been found.
That all works fine except when the validation has to delete files on the disk. (.txt, .jpg, etc it depends). In that case, after the validation is made, I am always kicked out of my website because of the error (Thread was being aborted). So I loose all my session variables which means I am not logged off.
Anybody had that kind of problem ? Is it normal that deleting files AND directories on the server make me loose my session? Is there a way to prevent that ?
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Jan 14, 2011
my the help of "tick event" of timer i execute some functios.
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Dec 16, 2010
I have a bit of a strange problem and wondering if anyone can help.I have an update panel that has a timer set as the AsyncPostBackTrigger.
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 ticked. My code is as follows:
[Code]....
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Oct 30, 2010
What is the best way to update data constantly on the client using asp.net Timer + Update Panel, or I need to use Reverse AJAX for that?
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Jun 21, 2010
I have a formview in Edit Mode, within an update Panel all and these arewithin a Modal Pop Up extender.On clicking Formview Update button, I want an image to appear within the pop up.I have put the image within another panel1 and runat server.For some reason the image is not showing on clicking update button.
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Oct 19, 2010
Basically I am trying to execute this code:
[Code]....
ERROR:Error 1 Cannot create an object of type 'System.Int32' from its string representation 'Convert.ToInt32(ViewState["RefreshInterval"])' for the 'Interval' property.
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Jul 14, 2010
I am using Ajax to update my UpdatePanel every 1 second and it is working perfectly with my gridview. However, when I placed a image into the UpdatePanel, which it supposed be changing and updated every 1 second, it does not update but the gridview does. Gridview is getting active changing data from the database without any problem. The image which I want to see the updating is the StreamImage.jpg. StreamImage.jpg is inside my local directory. It only updates when I hit the refresh button.
<asp:Content ID="Content4" ContentPlaceHolderID="ContentPlaceHolder2" Runat="Server">
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Apr 15, 2010
I have a page that have
[Code]....
[Code]....
And The ImageViewer Page Have
[Code]....
when i click the button for the first time it worked and the debugger go to the load of the Image Viewer page ,and when
i click the button again, it does not go to the image viewer page load at all (some kind of cache),of course if i remove the update
panel it will work perfectly, but i need it with update panel , the above code is a smplified test version of what i trying to do,
i need to read binary image with update panel(orginally i dont have a physical image, only binary)
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Oct 28, 2010
I've got a working update panel which works fine when updating a label control, but I can't get it to work with an updated image (initial image loads fine - the problem is with the update). I think the problem maybe that the image name and location don't change, only the physical file. In other words, I've loaded the page, then updated the image (same name and location), but the image does not update with the label? Here's my code:
[Code]....
And the code behind:
[Code]....
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Jul 1, 2010
I am querying the SQL database table and returning the result on the webform with a repeater, but I need to display one record at a time and refresh with an update panel and timer to iterate through the rows of the table one at a time at a fixed interval.
Is there another solution to be able to display one record at a time using c# in the webform, but then cycke through the other records one at a time using a timer control and updatepanel?
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Feb 16, 2010
I have a user control, that has an update panel and update progress control in it.
I use this user control in more than 1 location on the same page.... problem is, when ucA posts back, I see the update progress control for both ucA and ucB. I assume this is because it is a user control and the update panel and progress are named the same?
Either way - how do I make it so that the update progress only displays for the proper user control?
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Jul 14, 2010
I've exempted the irrelevant bits of code. Essentially, I am trying to change the URL of an image control inside of an update panel inside of a custom user control from a function called inside an update panel from my main page. Using UpdatePanel.Update() isn't working: I end up waiting for the next full page POST to occur before all the updates I make to CustomControl from buttons within the main page's update panel are visible. I verified that Update() was being called via the debugger: there are no issues in that department.
Here, you can see Custom Control and the Button declared. The button is in an update panel to avoid giving a full POST and causing the whole page to reload.
<cust:CustomControl runat="server" ID="CustomControl1">
<asp:UpdatePanel runat="server" ID="UpdatePanel1"> <ContentTemplate>
<asp:Button id="Button1" runat="server" OnClick="DoStuff" />
</ContentTemplate> </asp:UpdatePanel>
This control stores images within their own seperate update panels because rerendering the images is very slow (it requires processing arrays of millions of datapoints) and the user only ever needs to modify one image at a time. I'm using Image1 as an example.
[Code]....
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Jun 24, 2010
when i m going to store img in db and using fileupload control it's not possible to store , but if i remove update panel and scr... manager i can. need soluation. i m storing img as image in db as filebyte
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May 7, 2015
My combobox and asp:fileupload and imagepreview all are inside update panel , my combobox is doing postback after which my image disappears.... how to retain back image after postback ?
In [URL] .... if I remove input:file and put asp:file then it will be possible ... here's all code:
using System;
using System.Drawing;
using System.IO;
using System.Web.UI;
using System.Web.UI.WebControls;
public partial class Default3 : Page
[Code] ....
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Sep 6, 2012
I have 4 Image buttons on my user control and on the click of that Image button, I am opening new pop up window. I had used update panel but still it is refreshing the page. I don't want to refresh my page on the click.
<asp:UpdatePanel ID="SharePanel" runat="server">
<ContentTemplate>
<div class="full">
<h3>Share :
<asp:ImageButton ID="imgFB" runat="server"
ImageUrl="http://localhost:49524/mysite/Images/facebook_ico-1.gif"
[CODE]....
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Nov 24, 2010
I have an update panel with a set of 2 radio buttons, a label and an image button inside of it. There another set of 3 radio buttons that trigger the update panel. I got everything working but now the image button, label and set of 2 radio buttons inside the update panel show up twice when the radio button triggers are selected?
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May 4, 2014
How to display wait image when data is being populate into one drop down based on selection of another dropdown inside update panel....
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Mar 23, 2013
I tried this link to generate verification Image [URL] ..... It works fine.
But I'd like to put a button in page for regenerating captcha for example. When the image was unreadable for user.
So I put an updatepanel in page and this is my code:
<asp:UpdatePanel ID="UpdatePanel1" runat="server">
<ContentTemplate>
<tr> <td colspan="2">
<asp:Image ID="imCaptcha" ImageUrl="~/Captcha.ashx" runat="server" />
[Code] .....
Although the image changes but the whole page is refreshed. Whether this is due to incompatibilities httphandler and updatepanel?
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