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For more information, please see full course syllabus of Visual Basic
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Creating a Data Type

  • Implementing IComparable, IComparer and IEquatable is important for your own data types if you want to use them in a generic list
  • When creating your own data types, be sure to code all the functions you’ll need for now and in the future
  • If there are limits on your data types, you can avoid many problems by weeding them out in the Constructors
  • Using InvalidCastException, ArgumentOutOfRangeException and other common exceptions allow others to use the standard errors without having to deal with unique error types
  • You’ll have to decide if a narrowing conversion drops precision or throws an exception
  • Optimizing and testing your data type is very important