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Take a look at the following code and think what value will be displayed on the console (note that string is a reference type)?

While reading the official training kit for 70-515 exam I came across this text: “With view state, data is stored within controls on a page. For example, if a user types an address into a TextBox and view state is enabled, the address will remain in the TextBox between requests.”. If such statements can be found in recommended study guide, it should not come as a surprise, that confusion about the way ASP.NET Web Forms tries to cope with inherent statelessness of HTTP is so common… ;)

Suppose that you need to execute a block of code when iframe’s content is loaded. In case when iframe is created statically in HTML markup, the solution is really simple. All you have to do is to connect some JavaScript function with load event:

Have you ever seen BadImageFormatException or “An attempt was made to load a program with an incorrect format” message?

Bitmap class provides two simple methods: GetPixel and SetPixel used respectively to retrieve a point of image (as the Color structure) and set a point of image. The following code illustrates how to retrieve/set all the pixels in the bitmap:

Recently during modification of a program to communicate with WebSphere MQ (v6.0.2.7) I noticed that logs contain some exceptions of type EndOfStreamException. Since the adapter code was rather complex it took a while before I found a trivial cause of the problems ;)

String type (System.String) stores text values as a sequence of char (System.Char) elements that represent Unicode characters (encoded in UTF-16). Usually one char element stands for one symbol.