Choosing between classes and structures

Consider creating a structure when one or more of the following conditions apply:

• The structure's primary purpose is to encapsulate a few relatively simple data values
• It is reasonable to expect that the encapsulated values will be copied rather than referenced when you assign or pass around an instance of the structure
• Any properties stored by the structure are themselves value types, which would also be expected to be copied rather than referenced
• The structure does not need to inherit properties or behavior from another existing type

Examples of good candidates for structures include the following:

• The size of a geometric shape
• A point in a 3D coordinate system