method-parameters.md

title	Method Parameters (C# Reference)
ms.date	07/20/2015
ms.prod	.net
ms.technology	devlang-csharp
ms.topic	article
helpviewer_keywords	methods [C#], parameters method parameters [C#] parameters [C#]
ms.assetid	680e39ff-775b-48b0-9f47-4186a5bfc4a1
caps.latest.revision	8
author	BillWagner
ms.author	wiwagn

Method Parameters (C# Reference)

Parameters declared for a method without in, ref or out, are passed to the called method by value. That value can be changed in the method, but the changed value will not be retained when control passes back to the calling procedure. By using a method parameter keyword, you can change this behavior.

This section describes the keywords you can use when declaring method parameters:

• params

• in

• ref

• out

See Also

C# Reference
C# Programming Guide
C# Keywords