relpats

I am taking a VB class and have not done any programming and need some help. I need to know how to write the code to allow a user to continue with the program when a system overflow exception error occurs while maintaining a variable type of short.

relpats

By the way, I have tried using a "If >" and Try/Catch and cannot seem to get either of them to let the user continue.

Not sure if this is enough info or not but here is one section for example:

If RadioButton1.Checked = True Then
Try
TextBox3.Text = FirstNum + SecondNum
Catch ex As Exception
MsgBox("Number to large and resulted in overflow. Please enter a smaller number.")
End Try
Else
TextBox3.Text = FirstNum + SecondNum
End If

Stu_computer

Exception is a general catch all for unexpected errors, but you don't know if this was an overflow error or DivideByZero error or some other error.

You can use it as a general error trap and report the status of the error that occured...
Catch ex As Exception
MsgBox("Error: " & ex.Message)

If you only want to catch a particular error then you must use an explicit test...
Catch ex As OverflowException
MsgBox("Number to large and resulted in overflow. Please enter a smaller number.")


As a good programming practice you should add comments, (and it helps get a better grade in school).

'assign a default value and initialize variables and diplayed outputs with default value

DefaultNum = 0
SumNum = DefaultNum
TextBox3.Text = SumNum


If RadioButton1.Checked = True Then
Try
SumNum = FirstNum + SecondNum

Catch ex As OverflowException
MsgBox("Number to large and resulted in overflow. Please enter a smaller number.")
Catch ex As Exception
MsgBox("Error: " & ex.Message) 'some other error occurred

Finally
TextBox3.Text = SumNum 'assign result
SumNum = DefaultNum 'reset in case used elsewhere
End Try
End If

relpats

Thanks for the help, I will give it a try.