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For more information, please see full course syllabus of Visual Basic
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Helper Methods

  • Functions return a value, Subs do not
  • ByVal is the default way to pass values
  • ByVal passes a copy of the value to the function or sub
  • ByRef passes the value itself to the function or sub
  • Use a Return Value to know if a call was successful or not
  • Unsuccessful calls get an error code as the Return Value, successful calls usually return a 0 (zero)
  • Overloading calls allow you to use the same method name for a different parameter list
  • You can “stack” function calls, where the return value of one function is used as the input parameters of another