Asp.net - Android Does Not Process My Hyperlinks ASP .NET?
Feb 8, 2011
Android is not allowing this simple hyperlink: http://rentonlive.com/TandL.aspx?xid=106&xtitle=RED%LIGHT%CAMERAS%READER%SURVEYI get a web page not found error.Is there something wrong with the construction of the link in terms of Android?I downloaded an emulator, same problem. The phone says it has a browser, finding the 'rules' to this 'browser' is very difficult.And, all works fine in Google Chrome.Any pointers or sites that provide answers to Android issues appreciated.
If I watch the processes tab in Task Manager on the web server I see "cmd.exe" under the context of 'administrator' but it just hangs. For test purposes c:SendV80s.bat: copy c: oot.ini c:zzz.txt
If I logon onto the webserver's console and execute SendV80s.bat it works and exits without issue. But when I execute the same batch file via the Submit button it gets stuck executing in Task Manager/Process. I believe this has something to do with the fact that cmd is not running in a full environment/desktop context. I just noticed this on the actual console of the webserver (not in my RDP console but console 0 instead)
A pop-up box stating: CMD.exe Application error The application failed to initialize properly (0xc0000142). Click OK to terminate the application. And when I click on the OK button my ASPX page's WaitForExit is satisfied and the continues processing normally.
I know that similar questions have been asked all over the place, but I'm having trouble finding one that relates directly to what I'm after.
I have a website where a user uploads a data file, then that file is transformed and imported into SQL. The file could be up to 50mb in size, and some times this process can take 30 minutes or sometimes even longer.
I realise I need to palm off the actual work to another process, and poll that process on the web page. I'm wondering what the best approach would be though? Being a web developer by trade, I'm finding all this new Windows Service stuff a bit confusing, and I just wanted somewhere to start.
So:
Can I do / should I being doing this with a windows service? if so, how?
Should I use WCF? If this runs under IIS, will I have problems with aspnet_wp.exe recycling and timing out my process?
clarifications
The data is imported into sql, there's no file distribution taking place.
If there is a failure, it absolutely MUST be reported to the user. The web page will poll every, lets say, 5 seconds, from the time the async task begins, to get the 'status' of the import. Once it's finished another response will tell the page to stop polling for status updates.
queries on final decision
ok, so as I thought, it seems that a windows service is the best idea. So as to HOW to get it to work, it seems the 'put the file there and wait for the service to pick it up' idea is the generally accepted way, is there a way I can start a process run by the service, without it having to constantly be checking a database table / folder? As I said earlier, I don't have any experience with Windows Services - I wondered if I put a public method in the service, can I call it somehow?
I keep receiving an exception with the message "Logon failure: unknown user name or bad password". Im absolutelly sure that i'm submiting my correct username/pwd
I've developed a popup email .aspx used on our intranet based web app that is auto generated with .pdf's attached. I'm developing with VS 2008 ASP.Net 3.5 C# and System.Net.Mail.MailMessage. I can create and send the email with no issues. The problem is with any attempt to open or delete the attachments I get the above error. The .pdf's a copied with the following code:
FileStream fsr = new FileStream(inFilename, FileMode.Open, FileAccess.Read, FileShare.Read); BinaryReader reader = new BinaryReader(fsr); byte[] bytes = new byte[fsr.Length]; reader.Read(bytes, 0, bytes.Length); FileStream fsw = new FileStream(outFileName, FileMode.Create, FileAccess.Write, FileShare.Write); BinaryWriter writer = new BinaryWriter(fsw); writer.Write(bytes, 0, bytes.Length); // clean up writer.Flush(); writer.Close(); writer = null; fsw.Close(); fsw.Dispose(); fsw = null; reader.Close(); reader = null; fsr.Close(); fsr.Dispose(); fsr = null; Later after sending the email I: mailMessage.Dispose(); mailMessage = null; foreach (string fileName in attachments) { if (File.Exists(fileName)) File.Delete(fileName); }
The error occurs at: the File.Delete(fileName);
how I can delete or reopen these files after sending the email?
I'm creating a optimized web page for mobile devices with C#. Is there a way to offer a page for larger screens and one for smaller screens on android devices? With Apple i can differentiate between iPad and iPhone, but how can I do this with the galaxy tab or a regular android phone?I don't want to use any javascript in this case.
I have a Windows web server already set up with a website (unlimited application pools) and I want to be able to access a database on that server via the Android app I'm developing. How can I do this? how this cross-platform (Android/Java to ASP.NET/C#) communication can be done?
(I'm trying to create a leader board or global scoreboard for my Android game on my server.)
I have a .NET infra code running both within the IIS worker process and within a desktop client app. How can the .NET code determine whether it is running within an IIS worker process?
I know that I could check the name of the process (w3wp.exe, for instance), but I would like a more robust approach. I wish to make a side note. This is not a production need. I need this information to enable certain scenarios useful during the development and testing phase. Specifically to ease the testing of secure vs non secure configurations.
When I hit the run button (in my Default.aspx), a process starts (this process contacts a webservice to get some files, etc). How do I: Ensure that only a single process is running at a time (i.e. if I refresh the browser, I don't want to start the process a second time)Track progress - there are 4 points of the process (at 25%, 50%, 75%, 100%) that I want to track, and when each part completes, I want to update the progress bar. I have a status object for the running process, but the question is how to update the progress bar automatically? Do I need to use threads to achieve the above two?
My code is that I want to create a log file and log it upon a new user browsing the site. However, what i did was I put in a 6 second delay and then used another browser to access the page. And it threw an Exception saying it is being used by another process which is true. So how come I set it so that, if IT is being used by another process, WAIT and retry every 500 milliseconds until it becomes free/available?
here's the code:
protected void Page_Load(object sender, EventArgs e) {if (!IsPostBack) // if this is the first time page loads, set k to 1 { lognewuser(); }}
I am having the text file which is used to track all the ip address which is available in the network and replace the content from"Reply from 172.29.116.3: bytes=32 time=1ms TTL=255" to 172.29.116.3.
For this task i am having 2 functions 1.runCMD() Function is used to create a file which ping all the ip address between 3 to 254 ("Reply from 172.29.116.3: bytes=32 time=1ms TTL=255").
2.Another function textFileReplace() which is used to replace the text from "Reply from 172.29.116.3: bytes=32 time=1ms TTL=255" to 172.29.116.3.
This process will continue every 30 minutes..
But i am having the error while accessing the function textFileReplace() as The process cannot access the file 'C:inetpub' because it is being used by another process.
Below is the code to remove the URL bar on page load.... But I'm using AJAX with some panels and once the panels change, the URL comes back. Anyone experience this and know how to get around it?
I have a WCF REST service built with C# and it returns an image as part of a CPU intensive operation. The client is running on Android (Java) By default, it will return a text JSON object that looks something like this:
{"d",[9,0,77,12,11,...]}
Those are they bytes of the image. Fine. However, all the solutions for decoding this JSON are intolerably slow. I've tried Gson, Jackson, and the built-in Android JSONObject class. I have no idea why they are so slow.
As an alternative solution, I have my REST service return a GUID, and then that GUID can be used by the Android client to go to a regular URL that serves up the image as a regular binary stream, via an MVC controller.
This works well, and it fast, and is pretty easy to handle on the Android side. However, it does feel like a bit of kludge and kind of a violation of the REST design principles. Am I missing something here? Is there a better way to do this?
I currently use VS2008 and VS2010 for web applications and would like to start looking at creating apps for both OS'sMajority of the apps will be for myself and wifes phone, so want to play around with what can be done.
this method i can access using asp.net but not by using a android.. i have checked for the headers etc.. the response is OK in android while debugging but the data is not inserted..
what is the equivalent of stringbuilder in android??
in android i use
StringEntity se = new StringEntity(json.toString());
//and post the data to my service...
post.setEntity(se);
what is the equivalent of stringentity in C# and what can i do for this prob?
I would like to take our current mobile website and redesign it for iPhone use. All of the code on our website is currently run server-side and is split up in multiple pages, but I would like to get all the client-side features like transition animations and iPhone-like buttons that jQTouch offers. Where should I start?
Have some problems with client side validation (using RequiredFieldValidator, RegularExpressionValidator, CustomValidator with client side validation logic). It seems that WebForm_DoPostBackWithOptions is not fired or causes unhandled exception that makes the form to do the postback regardless it's valid or not.
I tried using a ValidationSummary, hiding it if javascript is supported:
Every thing works fine on Chrome with disabled javascript on my laptop, but not on my Android phone. The problem is that on the phone Javascript is not disabled, it's enabled, and correctly hides the ValidationSummary, but does not perform client side validation for some reason that i can't understand (no developers tools on Android browser :(( ).This is very frustrating! :(
how to solve the AJAX POST problem on ASP NET MVC running on IIS7, basically when you use an Android 2.1 phone and load an ASP NET MVC website on IIS7, and you click on a input button that subsquently makes an AJAX call, you get on a high level, the error window shopwing Error: NETWORK_ERR: XMLHttpRequest Exception 101. I have generated a TempData variable containing some data, and when a RedirectToAction call is made to the controller, the TempData is null. am wondering if anyone has managed to solve this problem at all, and I have searched everywhere but no one seems to know the solution for it.
We're running a fairly large site, and a lot of our visitors have started using their Android based cellphones to visit the site. However when they try to login, we get an Event Validation error:
Invalid postback or callback argument. Event validation is enabled using in configuration or <%@ Page EnableEventValidation="true" %> in a page. For security purposes, this feature verifies that arguments to postback or callback events originate from the server control that originally rendered them. If the data is valid and expected, use the ClientScriptManager.RegisterForEventValidation method in order to register the postback or callback data for validation.
Does anyone know of a way to fix this, without disabling Event validation entirely ?
It isn't every single time they visit, but it is often enough that it's a problem.
Also we never get these on PC-based browsers (IE, FF, Chrome, Safari, Opera, etc.)
EDIT:
The page this happens on has no updatepanels, no custom __doPostback code, etc. It's pretty much vanilla with a simple LinkButton that causes the postback.
Also this error occurs on a bunch of other pages as well (Just found out about that now), so I doubt it's a lone design fault.
I like to begin the develop of a smartphone application. I am using VS 2008, when I followe the step of creating a new project I have to pick the Tarjet Plataform, but this list is only for Windows, How I develop for other plataforma like Android, symbiam, etc.
i have deployed a simple chat project using Signalr which is working on desktop website successfully, but when i open the webpage in mobile it is not working at all. does SignalR works in mobile site??
