Question

Here is the code that demonstrates my problem (All in the same namespace):

public partial class Form1 : Form
{
    public Form1()
    {
        InitializeComponent();
        this.Fubar.BGroup.A = true;
    }

    public Foo Fubar = new Foo();
}

public class Foo
{
    public Foo()
    {
    }

    private BoolGroup bGroup = new BoolGroup();
    public BoolGroup BGroup
    {
        get{ return this.bGroup; }
        set
        { 
            this.bGroup = value;
            this.doSomething();
        }
    }
}

public class BoolGroup
{
    public BoolGroup()
    {
    }

    private bool a;
    public bool A
    {
        get { return this.a; }
        set { this.a = value; }
    }
}

private void doSomething()
{
    ....
}

I will never get to doSomething() and I really want to. What am I doing wrong? The values will all get set properly, but I never seem to get into that the set part of BGroup.

Thanks

Answer 1

You never set BGroup at all. The closest things you do are Fubar.BGroup.A = true and bGroup = new BoolGroup();.
Fubar.BGroup.A = true gets the BGroup property, and sets the A property on the BoolGroup object, it doesn’t set the BGroup.
bGroup = new BoolGroup() sets the backing field of the BGroup property, which is why you get that BoolGroup when you get BGroup, but it doesn’t go through the setter.

If you want to use the setter, your Foo class should be like this:

public class Foo
{
    public Foo()
    {
        // Note uppercase on BGroup to access the property and 
        //   not its backing field.
        BGroup = new BoolGroup(); 
    }

    private BoolGroup bGroup;
    public BoolGroup BGroup
    {
        get{ return this.bGroup; }
        set
        { 
            this.bGroup = value;
            this.doSomething();
        }
    }
}