How to indicate that a method was unsuccessful

Question

I have several similar methods, say eg. CalculatePoint(...) and CalculateListOfPoints(...). Occasionally, they may not succeed, and need to indicate this to the caller. For

Answer 1

Return Point.Empty. It's a .NET design patter to return a special field when you want to check if structure creation was successful. Avoid out parameters when you can.

public static readonly Point Empty