A set of .NET Framework managed libraries for developing graphical user interfaces.
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I have a Problem when open all linq .dbml the int data type convert from Int32 to @xcl i don't know the reason
In C#, @ prefix enables the use of keywords as identifiers, for VB.NET the equivalent is  e.g. Dim [Integer] As Integer. With that said, the code shown appears to be using C# not VB.NET
My guess is sqlmetal was used with /language csharp rather than /language vb