C# properties: how to use custom set property without private field?

I want to do this:

public Name
{
    get;
    set
    {
        dosomething();
        ??? = value
    }
}

Is it possible to use the auto-generated private field?

Or is it required that I implement it this way:

p开发者_开发问答rivate string name;
public string Name
{
    get
    {
        return name;
    }
    set
    {
        dosomething();
        name = value
    }
}

Once you want to do anything custom in either the getter or the setter you cannot use auto properties anymore.

You can try something like this:

public string Name { get; private set; }
public void SetName(string value)
{
    DoSomething();
    this.Name = value;
}

As of C# 7, you could use expression body definitions for the property's get and set accessors.

See more here

private string _name;

public string Name
{
    get => _name;
    set
    {
        DoSomething();
        _name = value;
    }
}

This is not possible. Either auto implemented properties or custom code.

It is required that you implement it fully given your scenario. Both get and set must be either auto-implemented or fully implemented together, not a combination of the two.