[2008] class exception vs in app exception.

[masfenix]

I have a question about some thoery.

I have a class Z. I have a function in there that calls a .net function. More specifcally i have:

Public Sub AddEmail(ByVal mail As String)
        MailEntity.To.Add(New MailAddress(mail))
End Sub

now we know that creating a new instance of the mailaddress with a string parameter can throw 3 exceptions.

I want to know whter I should put a try catch block in here! OR!!
When I declare the whole class in my Application (or any other application), I should place the try catch when I call the function..

I hope I made sense.