Question

http://msdn.microsoft.com/en-us/library/87x5f80y%28v=vs.80%29.aspx

I know the error and why. I am just curious. For some projects this show up as warning while for others this doesn’t show up at all.

How do I set up so that the warning show up?

Answer 1

Information of the warning: http://msdn.microsoft.com/en-us/library/87x5f80y(v=vs.80).aspx

Information of how to hide or treating it as error: Goto the Compile tab of the Project Designer.

Note: There is differencies in what type of object you create. In then example below, only test1 will give warning, not the test2 function.

Function test1() As String

End Function

Function test2() As Integer

End Function

You can also use compiler options to hide warnings or threat them as errors. This specific warning has the ID 42105:
Function or Operator without Return Value Warning

Generated when the function does not have a return value specified.
Default for new projects is on. ID: 42105 function

More information about how it works here: http://msdn.microsoft.com/en-us/library/3y20cc1z(v=vs.80).aspx

When Option Strict is set to Off, Option Strict related warnings cannot be treated independently of each other. When Option Strict is set to On, the associated warnings are treated as errors, no matter what their status is. When Option Strict is set to Custom by specifying /optionstrict:custom in the command line compiler, Option Strict warnings can be toggled on or off independently.