wpf DependencyProperty Not accepting default value for short

Question

Hi, I was trying to use tis depencency property in my code but it gives me error says that Default value type does not match type of property 'MyProperty'.But short should accept 0 as default value.Ans also if i try to give null as default value it works..even if its a non nullabel type.How come this happens..

public short MyProperty
        {
            get { return (short)GetValue(MyPropertyProperty); }
            set { SetValue(MyPropertyProperty, value); }
        }

        // Using a DependencyProperty as the backing store for MyProperty.  This enables animation, styling, binding, etc...
        public static readonly DependencyProperty MyPropertyProperty =
            DependencyProperty.Register("MyProperty", typeof(short), typeof(Window2), new UIPropertyMetadata(0));

Answer 1

public short MyProperty { get { return (short)GetValue(MyPropertyProperty); } set { SetValue(MyPropertyProperty, value); } }

    // Using a DependencyProperty as the backing store for MyProperty.  This enables animation, styling, binding, etc...
    public static readonly DependencyProperty MyPropertyProperty =
        DependencyProperty.Register("MyProperty", typeof(short), typeof(Window2), new UIPropertyMetadata((short)0));

This seems to work...looks like 0 will be interpreted as int..but why..?

Answer 2

The problem is that the C# compiler interprets literal values as integers. You can tell it to parse them as longs or ulongs (40L is a long, 40UL is ulong), but there isn't an easy way to declare a short. Simply casting the literal will work:

public short MyProperty
{
    get { return (short)GetValue(MyPropertyProperty); }
    set { SetValue(MyPropertyProperty, value); }
}

public static readonly DependencyProperty MyPropertyProperty  = DependencyProperty.Register(
    "MyProperty", 
    typeof(short),
    typeof(Window2),
    new UIPropertyMetadata((short)0));