Whats the difference between do while and while in VB.NET?

In DO...WHILE, the code inside the loop is executed at least once

In WHILE Loop, the code inside the loop is executed 0 or more times.

In Visual Basic these are identical:

    Dim foo As Boolean = True

    While Not foo
        Debug.WriteLine("!")
    End While

    Do While Not foo
        Debug.WriteLine("*")
    Loop

These are not; the do executes once:

    Dim foo As Boolean = True

    While Not foo
        Debug.WriteLine("!")
    End While

    Do
        Debug.WriteLine("*")
    Loop While Not foo