public void NullParameters()
{
using(var form = new Form()) {
BindingManager manager = new BindingManager();
Assert.Throws<ArgumentNullException>(
() => manager.SetBinding(null, "Text", new Binding())
);
Assert.Throws<ArgumentOutOfRangeException>(
() => manager.SetBinding(form, (string)null, new Binding())
);
Assert.Throws<ArgumentOutOfRangeException>(
() => manager.SetBinding(form, string.Empty, new Binding())
);
Assert.Throws<ArgumentNullException>(
() => manager.SetBinding(form, "Text", null)
);
Assert.Throws<ArgumentNullException>(
() => manager.SetBinding(form, (AttachedPropertyBase)null, new Binding())
);
Assert.Throws<ArgumentException>(
() => manager.ClearBinding(null, "Text")
);
Assert.Throws<ArgumentNullException>(
() => manager.ClearBinding(form, (string)null)
);
Assert.Throws<ArgumentNullException>(
() => manager.ClearBinding(form, (AttachedPropertyBase)null)
);
Assert.Throws<ArgumentException>(
() => manager.ClearBinding(form, string.Empty)
);
Assert.Throws<ArgumentNullException>(
() => manager.ClearAllBindings(null)
);
Assert.Throws<ArgumentNullException>(
() => manager.SetValue(null, TextProperty, string.Empty)
);
Assert.Throws<ArgumentNullException>(
() => manager.SetValue(form, (AttachedPropertyBase)null, string.Empty)
);
Assert.Throws<ArgumentNullException>(
() => manager.ClearValue(null, TextProperty)
);
Assert.Throws<ArgumentNullException>(
() => manager.ClearValue(form, (AttachedPropertyBase)null)
);
}
}
public void UndoSetBindingAndValue()
{
using(var form = new Form()) {
//form initialized
BindingManager manager = new BindingManager();
((ISupportInitialize)manager).BeginInit();
((ISupportInitialize)manager).EndInit();
//binding created with wizard
manager.SetBinding(form, TextProperty, new Binding());
//value set with property grid
manager.SetValue(form, TextProperty, "test");
//deserialization on undo
((ISupportInitialize)manager).BeginInit();
Assert.That(form.GetValue(TextProperty), Is.Null);
manager.SetBinding(form, TextProperty, new Binding());
((ISupportInitialize)manager).EndInit();
//undo from property grid
manager.ClearValue(form, TextProperty);
Assert.That(manager.GetBindingActions().Count(), Is.EqualTo(1));
Assert.That(manager.GetValueActions().Count(), Is.EqualTo(0));
form.SetDataContext("Test");
Assert.That(form.GetValue(TextProperty), Is.EqualTo("Test"));
}
}
public void SetClearValue()
{
using(var form = new Form()) {
var button = new Button();
form.Controls.Add(button);
var viewModel = new TestViewModel() { StringProperty = "test", StringProperty2 = "test2" };
form.SetDataContext(viewModel);
BindingManager manager = new BindingManager();
manager.SetBinding(button, DataContextProvider.DataContextProperty, new Binding(() => viewModel.StringProperty));
manager.SetValue(button, DataContextProvider.DataContextProperty, "value");
Assert.That(button.GetDataContext(), Is.EqualTo("value"));
Assert.That(manager.GetBindingActions().Count(), Is.EqualTo(0));
Assert.That(manager.GetValueActions().Count(), Is.EqualTo(1));
SetValueAction action = manager.GetValueActions().First();
Assert.That(action.Control, Is.EqualTo(button));
Assert.That(((AttachedPropertyDescriptor)action.Property).Property, Is.EqualTo(DataContextProvider.DataContextProperty));
Assert.That(action.Value, Is.EqualTo("value"));
Assert.That(manager.FindAction(button, AttachedPropertyDescriptor.FromAttachedProperty(DataContextProvider.DataContextProperty)), Is.EqualTo(action));
manager.SetValue(button, DataContextProvider.DataContextProperty, "value2");
Assert.That(manager.GetBindingActions().Count(), Is.EqualTo(0));
Assert.That(manager.GetValueActions().Count(), Is.EqualTo(1));
Assert.That(button.GetDataContext(), Is.EqualTo("value2"));
action = manager.GetValueActions().First();
Assert.That(action.Control, Is.EqualTo(button));
Assert.That(((AttachedPropertyDescriptor)action.Property).Property, Is.EqualTo(DataContextProvider.DataContextProperty));
Assert.That(action.Value, Is.EqualTo("value2"));
manager.ClearValue(button, DataContextProvider.DataContextProperty);
Assert.That(manager.GetBindingActions().Count(), Is.EqualTo(0));
Assert.That(manager.GetValueActions().Count(), Is.EqualTo(0));
Assert.That(button.GetDataContext(), Is.Null);
}
}