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Directives

Meaning in Life

#region, #endregion

Used to mark sections of collapsible source code

#define, #undef

Used to define and undefine conditional compilation symbols

#if, #elif, #else, #endif

Used to conditionally skip sections of source code (based on specified

compilation symbols)

Specifying Code Regions

Perhaps some of the most useful of all preprocessor directives are #region and #endregion. Using

these tags, you are able to specify a block of code that may be hidden from view and identified by a

friendly textual marker. Use of regions can help keep lengthy *.cs files more manageable. For exam-

ple, you could create one region for a type’s constructors, another for type properties, and so forth:

class Car

{

private string petName;

private int currSp;