Today I just creating new project on my machine using Visual stidio 2010 with silverlight 4.0 after creating project i got **NullReference exception ...

Often in Silverlight applications, while consuming services, we will receive these errors like "This could be due to attempting to access a service in a cross-domain way

Silverlight 5 provides a property "CharacterSpacing", which gives control over space between the characters of a text. As you increase the value of this property, the spaces between each character will grow. You can also gives the values in negative, which makes each character will collide with its next character.

In Silverlight 5, two additional controls, “RichTextBlock” and “RichTextBlockOverflow” controls has been added, which will helps in adjusting the overflow content into the specified Rich Text Block Overflow controls. Both these controls have a property, “OverflowContentTarget”, which indicates the name of control to keep the overflow text.

In Silverlight 5, two additional controls, “RichTextBlock” and “RichTextBlockOverflow” controls has been added, which will helps in adjusting the overflow content into the specified Rich Text Block Overflow controls. Both these controls have a property, “OverflowContentTarget”, which indicates the name of control to keep the overflow text.

This screenshot shows, how the richtextbox control move its overflow content to its next richtextboxoverflow block.

Until SIlverlight 4, UpdateSourceTrigger enum has only 2 options, "LostFocus" and "Explicit". "LostFocus" will update the source value back only when the focus lost. "Explicit" will update the source value, when the user explicitly press "OK" button in formviewer.

Win32 API has thousands of utlitity fuctions which will do a lot of range of tasks. From C# manage code, we can call these native functions. Now Silverlight 5 also started to support calling native code from manged code.

This screenshot shows Win32 Message Box, called from Silverlight OOB application.

Often we will show pop-up windows in applications. One problem with the pop-ups is user needs to close the popup to continue with the background application. Suppose, if you want your application to continue to work while playing some audio in a separate window