I am new in Silverlight.
When I add some control to my xaml file with Visual Studio it set controls name with Name property, but there is also x:Name.
Is there any d
No, you just can't use them both. x:Name is what the XAML preprocessor actually uses and Name is just a convience property provided on the FrameworkElement class to set it.
From the MSDN reference:
If Name is available as a property on an element, Name and x:Name can be used interchangeably, but an error results if both attributes are specified on the same element.