How to store all ctor parameters in fields

Question

I'm learning C# and a thought came up when coding. Is it possible to automaticly store parameters from a constructor to the fields in a simple way without having to write this.var = var on every variable to store them?

Example:

class MyClass {     int var1;     int var2;     int var3;     int var4;     public MyClass(int var1, int var2, int var3, int var4){         this.var1 = var1;         this.var2 = var2;         this.var3 = var3;         this.var4 = var4;     } } 

Is there a way to avoid writing this.varX = varX and save all the variables to the fields if the names are the same?

Answer 1

If you define your variables first, you can use visual studios' "Quick actions" tool to generate a constructor for you; this gives you a choice of the currently-defined class fields to include.

using this will insert a constructor class with all your selected fields as parameters, and it will assign the values to the fields.

This will not reduce the amount of code, but it will cut back on the amount of typing you need

Answer 2

No, there is no way to do this more easily in the current version of C#. There was a new feature in the C# 6.0 prereleases called Primary Constructors to solve this, but it was removed before the final release. https://www.c-sharpcorner.com/UploadFile/7ca517/primary-constructor-is-removed-from-C-Sharp-6-0/

Currently, I believe the C# team are working on adding records to the language: https://github.com/dotnet/roslyn/blob/features/records/docs/features/records.md - this should make working with simple data classes much simpler, as in F#