Categories: Programming

How to add multiple free images to your eBay auction

Posted by Raffael on Posted in HTML, Tutorials, Web Tips Tagged , , , , , , , ,

ebay_logoToday it is about eBay. Specifically, about how you can add as many pictures as you like into your auction description for free. So there will be no additional costs, such as it would normally be the case, when you use the image features of eBay. Thankfully eBay gives us almost everything that is needed to add free images to our auctions.
To better explain the procedure, I created a fictitious offer on Ebay. Who does not like to read, of course, can also scroll to the end of the article and watch the whole explanation as screencast. And here’s how it works:
Step 1:
ebay_kostenlos_bilder_1  ebay_kostenlos_bilder_2
After you have entered the basic information and are located yourself […]

How to set up a PERL development environment on Windows with Eclipse

Posted by Raffael on Posted in Perl, Tutorials, Windows 7, Windows 8 Tagged , , , , ,

perl_article_logoAs I shall deal, due to the university, the next six months with Perl, a appropriate IDE was needed. And because there were not given any installation instructions at my university, I have written down in the following, how you can set up a viable development environment for Perl scripts on Windows.
After reading this article you should be able to write Perl code using the IDE “Eclipse”. This has the advantage that in eclipse (by help of plugins) syntax errors are detected, etc.. If you know Eclipse and think it’s too “heavy weight” then you need to be patient for a little bit. In the following days I’ll post a further article in which I’ll describe how you can set up Notepad++ to use it as Perl development environment.
Preparation
Firstly you will need a Perl distribution – I’ve decided on […]

Display PHP errors in Webmatrix

Posted by Raffael on Posted in PHP, Tutorials Tagged , , , , , , ,

WebMatrix 2 - logoFor several weeks Microsofts development environment, called WebMatrix, is available in version 3. As already the first and second version was, WebMatrix 3 is ​​a free development environment for websites and web applications of different platforms such as ASP.NET, PHP, and HTML5.
I use WebMatrix from time to time to test, among other things, just one or the other PHP script. Sadly the provided/integrated web server shows by the default settings, so as it is delivered, no PHP error messages. So when the gremlins sneak in your PHP script and you have not caught all code in try-catch blocks, you only see a white page in browser. For productive environments this seems to make sense, but for a development tool, this is plain and simple said – bullshit!
To show the, in my opinion very helpful, […]

Javascript’s escape() in C# – a C# equivalent to the escape()-function

Posted by Raffael on Posted in C#.Net, JavaScript, Tutorials Tagged , , , , , , , , ,

csharp_vs_javascriptThe .NET framework provides a large number of ways to encode HTML code and URLs. There exist, for example, Uri.EscapeDataString(), Uri.EscapeUriString(), System.Web.HttpUtility.UrlEncode(), System.Web.HttpUtility.UrlPathEncode(), System.Web.HttpUtility.HtmlEncode() or System.Web.HttpUtility.HtmlAttributeEncode().
However, if you are looking for equivalent functionality to Javascript’s escape(), so you will be disappointed by all of these aforementioned functions. None of these inherently with the .NET framework delivered functions is equivalent to the Javascript escape() function.  For better understanding, I made the following example:
The test text is in german, because the ‘ä’ is a nice character to show the problems. Translated to english it means: “Raffi’s annoying C# testcode”.

// Original source text
// Raffi’s ärgerlicher C# Teststring/Testcode.

// Javascript original (produced by escape())
// Raffi%27s%20%E4rgerlicher%20C%23%20Teststring/Testcode.

// Uri.EscapeDataString():
// Raffi’s%20%C3%A4rgerlicher%20C%23%20Teststring%2FTestcode.

// Uri.EscapeUriString():
// Raffi’s%20%C3%A4rgerlicher%20C#%20Teststring/Testcode.

// System.Web.HttpUtility.UrlEncode():
// Raffi%27s+%c3%a4rgerlicher+C%23+Teststring%2fTestcode.

// System.Web.HttpUtility.UrlPathEncode():
// Raffi’s%20%c3%a4rgerlicher%20C#%20Teststring/Testcode.

// System.Web.HttpUtility.HtmlEncode():
// Raffi's ärgerlicher C# Teststring/Testcode.

// System.Web.HttpUtility.HtmlAttributeEncode():
// Raffi's ärgerlicher C# Teststring/Testcode.

But I would not blog about it if I did not have […]

QRCoder – an Open Source QR code generator implementation in C#

Posted by Raffael on Posted in C#.Net, Tutorials Tagged , , , , , , ,

QRCoder demoIn modern times QR codes should be known by pretty much everyone. Since smartphones are becoming increasingly popular, QR codes can also be found at more and more places in our everyday lives. As a fairly serious geek this should be reason enough to engage a bit more in detail with the technology behind it. And what way seems to be more suitable than implementing a QR code generator by yourself?
Because C# is my favourite programming language, the choice fell accordingly to this language. Sadly information on the QR code are not so easy to get. The easiest way of course would be the official way – simply buy the ISO/IEC document. That would be the ISO/IEC 18004. But there’s also a crux on that. The ISO 18004 costs […]