Welcome to TechScreen

Welcome to the TechScreen site. This side shall support the exchange of knowledge in the domain of Web Engineering and related aspects. As a side effect, this side is used for research on knowledge management technologies. User can pose challenges in the problem domain and can participate in quizzes. Further a bibliography about arcticles in different related domains is continously extended. Finally, questionnaires on different issues are provided. To be able to participate you need an account and a password from TU Wien's TISS system.

Problem with loading of side pages on localhost

After the installation of wordpress on my localhost I had a problem when I wanted to check my side pages on localhost.Page not found constantly popped up.Only the main page could be loaded and checked.I figured out that I did not connect localhost properly and the solutions online were mostly unadequate.For someone who just started with usage of these technologies can be very irritating since the solutions are prety simple but yet you loose a lot of time trying to solve it . Bellow the solution is attached
Submitted by Edin Rizvic on Tue, 12/17/2013 - 23:21

How to run asynchron Operations in C#

Its import how a Task is working. There are many ways to run asynchron operations. Sometimes you also need return values from a Task or you want to cancel/stop the Task clean. For how to cancel a task please read the section for Cancellation Token. More informations you can find on MSDN. http://msdn.microsoft.com/en-us/library/dd537609%28v=vs.110%29.aspx Here you can see a codesnippet how easy it is to deal with Tasks.
Submitted by Hakan Yeter on Tue, 12/17/2013 - 17:54

How to install Windows 7 ISO from bootable USB stick

Often it is not possible to install the OS (Windows 7) from DVD. Sometimes devices dont have a dvd drive or you have only the ISO dowloaded from the Microsoft Download store.
Submitted by Hakan Yeter on Tue, 12/17/2013 - 17:21

Dismantling a simple theme into more php files for easier organisation

Download the free simple theme online and copy it to your work folder.There will be only one index file in which all html is contained starting from header to footer.Doing a php programming in that file would be pretty difficult and unorganised and the code would be very untidy.So,the challenge is to dismantle the theme into more pieces using simple php. Sollution is attached bellow
Submitted by Edin Rizvic on Tue, 12/17/2013 - 17:20

iPhone - Extract Address Book Contacts, Save SMS and iMessages

If you have lost your phone or if its damaged and you need your contacts from iPhone Backup, it is possible to read the needed information. But you need also the information if you have encrypted your backupfile. Some applications dont support encrypted iPhone Backupfiles. In this goal we want to extract only contacts. Therefore we install a programm so called "iPhone Backup Viewer".
Submitted by Hakan Yeter on Tue, 12/17/2013 - 16:28

Connecting wordpress with localhost

Setting up a wordpress on localhost to do the work offline is not difficult but for those who are starting up with web development can be pretty iritating. So the task is to install and set up the wamp or xamp server and then install and implement wordpress on your localhost. Make an adequate changes in wp_config_sample.php file in order to connect it properly. Connect the wordpress with mysql. Solution is attached on chalenge
Submitted by Edin Rizvic on Tue, 12/17/2013 - 14:44

How to Debug time critical code without stopping it

Software is oftenly time dependent. For instance if it interacts with another component on a remote server, the interaction might be time critical, which means that it shall not be stopped or interrupted as it otherwise might change the behavior of its system. The problem is, that even such software is prone to errors, but in case its runtime is stopped in order to debug the error it might change its behavior which might make it difficult to find out the problem behind the error.
Submitted by Alexander Gruber on Thu, 12/12/2013 - 23:54

How to decode addresses into coordinates and vice versa

Webapps in geographical context, often comprise the problem that postal addresses have to be converted into coordinates, in order to use them for navigational purposes. Also the other way round is sometimes required, like finding an appropriate address on the base of a given set of coordinates. Implementing an own coordinates to address converter is usually impossible for Webapp Designers or Programmer's, as it means to maintain a huge amount of data, as well as sophisticated algorithms to access the geographic data.
Submitted by Alexander Gruber on Thu, 12/12/2013 - 23:12

Image with a text overlay that is dynamically generated

I want to display an image with a title that lays on top of the image. This title should be dynamically generated, therefore no photo editing tool can be used in this situation. The text comes from a dynamically generated JSON object, which then can be used by a JavaScript in order to inject the title information into a website. The only technologies that can here be used is web technologies such as XHTML and CSS.
Submitted by Thomas Ziegelbecker on Thu, 12/12/2013 - 22:52

How to find a partial String in another String with JavaScript

I've got a string lets say its "/s200/" which is part of a URL, and this part is responsible for resizing an image on demand. So whenever you change s200 to a higher or lower number following the s, then the picture that is returned by the complete URL will be either increased or decreased in size. Now i want to programmatically find this part in the url and replace it by lets say "/s800/" in order to make the returned image bigger.
Submitted by Thomas Ziegelbecker on Thu, 12/12/2013 - 22:12

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