In C#, how do you mix a default get with an explicit set?

Question

I want to do something like this:

class Foo
{
    bool Property
    {
        get;
        set
        {
            notifySomethingOfTheChange();
            // What should I put here to set the value?
        }
    }
}

Is there anything I can put there to set the value? Or will I have to explicitly define the get and add another field to the class?

Answer 1

There is no way.

• You can either have both setter and getter auto-implemented

   bool Property { get; set; } 

• Or implement both manually

   bool Property { get { return _prop; } set { _prop = value; } } 

Answer 2

You either have a default property, with compiler-generated backing field and getter and/or setter body, or a custom property.

Once you define your own setter, there is no compiler-generated backing field. You have to make one yourself, and define the getter body also.

Answer 3

No this is the case where auto-properties are not the best fit, and therefore the point at which you go to proper implemented properties:

class Foo
{
    private bool property;
    public bool Property
    {
        get
        {
            return this.property;
        }
        set
        {
            notifySomethingOfTheChange();
            this.property = value
        }
    }
}

Answer 4

In many cases you can use the "Auto Property" feature eg public int Age { get; set; } = 43;

This is a good reference http://www.informit.com/articles/article.aspx?p=2416187

Naji K.