In my framework DLL, I have several classes defined in several class files. In each file, I have this structure:

Public Class MyName

    Public Shared lError As Boolean = False
    Public Shared cError As String = ""
    Public Shared cErrorStackTrace As String = ""

    ' My list of functions here

    ' Initialize the default properties before the function gets called
    Private Shared Sub ErrorInitialize()
        lError = False
        cError = ""
        cErrorStackTrace = ""
    End Sub

    ' When an error occurs, we are setting up those properties
    ' expO1 Exception object
    Private Shared Sub ErrorSetup(ByVal toError As Exception)
        cError = toError.Message
        lError = True
        cErrorStackTrace = toError.StackTrace
    End Sub

End Class

In each file, I have definining those 3 public properties as well as those two functions. Wouldn't it be a way to only define that in one place?