#273 – Parameter Modifier Summary

Here’s a summary of the different parameter modifiers and how the behavior changes for each, when using them with value-typed and reference-typed variables.

  • No modifier – value types
    • Copy of value passed to method
    • Method can read value
  • No modifier – reference types
    • Reference to object passed to method
    • Method can read/write object contents
  • ref modifier – value types
    • Reference to variable passed to method
    • Method can read/write variable
  • ref modifier – reference types
    • Reference to object reference passed to method
    • Method can read/write object contents
    • Method can change reference to point to new object
  • out modifier – value types
    • Reference to variable passed to method
    • Method must write new value to variable
  • out modifier – reference types
    • Reference to object reference passed to method
    • Method must change reference to point to new object
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About Sean
Software developer in the Twin Cities area, passionate about .NET technologies. Equally passionate about my own personal projects related to family history and preservation of family stories and photos.

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