Optional Parameters

[atmosphere1212]

Hey

 

I'm using vb.net and I have a question about opional params.

 

if i have a sub:

 

Public sub doSomething( ..., Optional Byref d1 as Date = Nothing )

...

End Sub

 

I am getting an error saying cannot cast object to date in a constant expression. Why am I getting this? And how do I fix it to set some null default value?

[Robby]

First I would use DateTime instead of Date, second you may want to overload the method and not use the Optional keyword. The OverLoad would solve the problem of the argument being left out.