public void When_Modified_From_Callback_And_TwoWay()
{
var dp1 = new MyDP();
var dp2 = new MyDP();
var binding = new Binding
{
Source = dp1,
Path = new PropertyPath(nameof(MyDP.MyInt)),
Mode = BindingMode.TwoWay
};
BindingOperations.SetBinding(dp2, MyDP.MyIntProperty, binding);
var callbackCount = 0;
dp1.RegisterPropertyChangedCallback(MyDP.MyIntProperty, OnMyIntChanged);
dp2.MyInt = 11;
Assert.AreEqual(42, dp1.MyInt);
Assert.AreEqual(11, dp2.MyInt);
Assert.AreEqual(2, callbackCount);
void OnMyIntChanged(DependencyObject sender, DependencyProperty dpInner)
{
callbackCount++;
(sender as MyDP).MyInt = 42;
}
}
public void When_Modified_From_Callback()
{
var dp = new MyDP();
var callbackCount = 0;
dp.RegisterPropertyChangedCallback(MyDP.MyIntProperty, OnMyIntChanged);
dp.MyInt = 11;
Assert.AreEqual(42, dp.MyInt);
Assert.AreEqual(2, callbackCount);
void OnMyIntChanged(DependencyObject sender, DependencyProperty dpInner)
{
callbackCount++;
(sender as MyDP).MyInt = 42;
}
}