How can I do direct assignment without using new?

Question

I would like to do something like this in C#:

Foo test = "string";

And now the object should be initialized. How can I achieve that? I can't get it to work but I know it is possible.

Answer is here: [Overloading assignment operator in C#](http://stackoverflow.com/a/4537848/754376) — Vakho, May 21 '14 at 16:56

score 8 · Accepted Answer · answered May 21 '14 at 16:56

You're looking for an implicit conversion operator.

public class Foo
{
    public string Bar { get; set; }

    public static implicit operator Foo(string s)
    {
        return new Foo() { Bar = s };
    }
}

Then you can do:

Foo f = "asdf";
Console.WriteLine(f.Bar); // yields => "asdf";

score 0 · Answer 2 · edited May 21 '14 at 17:20

0

You can use cast operator to implicitly:

sealed class Foo
{
    public string Str
    {
        get;
        private set;
    }

    Foo()
    {
    }

    public static implicit operator Foo(string str)
    {
        return new Foo
        {
            Str = str
        };
    }
}

Then you can do Foo test = "string";.

edited May 21 '14 at 17:20

user247702

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answered May 21 '14 at 16:57

1

+1 but you should fix the syntax error in your answer. (`Str` does not exist) – user247702 May 21 '14 at 17:17

How can I do direct assignment without using new?

2 Answers2