Usage of #region ,#undefine

[Abalfazl]

What is usage of #region and #undefine in C#.NET?Please by example

[eclipsed4utoo]

I use #region all the time. it is a way to keep similar code blocks together. This is the way that I use it.

#region Button Click Events

   ......  All of my button click events .....

#endregion

It will now allow me to collapse all of the button click events into one line. For me, it helps keep the code looking cleaner.

[Shuja Ali]

What is usage of #region and #undefine in C#.NET?Please by example

Won't MSDN have all the information that you are looking for?

Look at #undef

[MadHatter]

#region is a code view only decoration that is used by coders who write bloated code.

I cringe most times I see them used because its typically used to collapse hundreds of lines of useless code.