Regions

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A region is a collapsible block of code, that can help with the readability and organisation of your code.

NOTE: StyleCop’s rule SA1124 DoNotUseRegions discourages use of regions. They are usually a sign of badly organized code, as C# includes partial classes and other features which make regions obsolete.

You can use regions in the following way:

class Program
{
    #region Application entry point
    static void Main(string[] args)
    {
        PrintHelloWorld();
        System.Console.ReadLine();
    }
    #endregion

    #region My method
    private static void PrintHelloWorld()
    {
        System.Console.WriteLine("Hello, World!");
    }
    #endregion
}

When the above code is view in an IDE, you will be able to collapse and expand the code using the + and - symbols.

Expanded

Collapsed

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