On 2008-08-28, B Chernick <BC*******@discussions.microsoft.comwrote:
I'm getting a little confused here. I have a C# class that I'm trying to
translate to VB.
The C# class is essentially:
public static class Class1
{
.... some private static variables and public static properties.
}
The translation (from several different translation programs) is:
Public NonIneritable Class Class1
private sub New()
End sub
... some private shared variables and public shared properties
end Class
Does this look right? Just want a second opinion.
(I'm pretty sure the VB version is a singleton but not so sure about the C#
version.)
The translation is accurate. In C#, a static class is essentially equivalent
to a VB.NET module - in that it can only have static (vb.net shared) memebers.
Before C#v2, you would declare such a class as:
public sealed class Class1
{
private Class1(){};
// now only add static members
}
Which is essentially what you showed in the VB.NET code. This was a common
enough patter that in C#v2 they started allowing static to be applied to a
clas declaration - which gave compiler enforcement to the above pattern.
Since, you can add not static members to the above C# class.
I wouldn't really call that a Singleton... Though, I suppose it could be
thought of that way :) Usually, you'll see an implementation similar to this
for a singleton:
public class Singleton
{
private static Singleton instance = new Singleton();
private Singleton() {}
public Singlton Instance
{
get
{
return instance;
}
}
// public members
}
Which in VB.NET would look like:
Public Class Singleton
Private Shared _instance As New Singleton()
Private Sub New()
End Sub
Public ReadOnly Property Instance As Singleton
Get
Return _instance
End Get
End Property
' other public members...
End Class
HTH
--
Tom Shelton
