C# #region directive

In this chapter you will learn:

1. How to use #region directive
2. Syntax for #region directive
3. Example for #region directive

Using #region directive

The #region and #endregion directives define a region that will be expanded or collapsed when using outlining in the Visual Studio IDE.

Syntax

The general form is shown here:

#region region-name 
 // code sequence
#endregion

Example

The following code shows how to use #region and #endregion.

using System;/*  w  ww.  ja v a2s  . co  m*/

class MainClass
{
  [STAThread]
  static void Main(string[] args)
  {
      #region Stuff 
          
    
      #endregion

  }

}

The code above generates the following result.

Next chapter...

What you will learn in the next chapter:

1. #warning directive produces a warning
2. Syntax for #warning preprocessor
3. Example for #warning preprocessor
4. Unused Warning With Warning Suppressed

C# #region directive