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  1. C# / CSharp Tutorial
  2. Language Basics
  3. ref
1.11.ref
1.11.1.Use ref to pass a value type by reference
1.11.2.Swap two values
1.11.3.Swap two references.
1.11.4.Use out for reference type
1.11.5.Use ref for int value
1.11.6.Use ref for reference type
1.11.7.Change string using ref keyword
1.11.8.Passing Parameters by Value