What is the purpose of ‘this’ keyword in C#

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There are a couple of cases where it matters:

  • If you have a function parameter and a member variable with the same names, you need to be able to distinguish them:

    class Foo {
  public Foo(int i) { this.i = i; }

  private int i;
}

  • If you actually need to reference the current object, rather than one of its members. Perhaps you need to pass it to another function:

    class Foo {
  public static DoSomething(Bar b) {...}
}

class Bar {
  public Bar() { Foo.DoSomething(this); }
}

    Of course the same applies if you want to return a reference to the current object

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