Visual Basic .NET Language Introduction to Syntax Writing a function
Example
A function is a block of code that will be called several times during the execution. Instead of writing the same piece of code again and again, one can write this code inside a function and call that function whenever it is needed.
A function :
- Must be declared in a class or a module
- Returns a value (specified by the return type)
- Has a modifier
- Can take parameters to do its processing
Private Function AddNumbers(X As Integer, Y As Integer) As Integer
Return X + Y
End Function
A Function Name, could be used as the return statement
Function sealBarTypeValidation() as Boolean
Dim err As Boolean = False
If rbSealBarType.SelectedValue = "" Then
err = True
End If
Return err
End Function
is just the same as
Function sealBarTypeValidation() as Boolean
sealBarTypeValidation = False
If rbSealBarType.SelectedValue = "" Then
sealBarTypeValidation = True
End If
End Function
