WPF-有什么办法以编程方式评估绑定？

BindingExpression bindingExpression = BindingOperations.GetBindingExpression(myControl, MyControl.MyPropertyProperty);
bindingExpression.UpdateTarget();

DependencyPropertyDescriptor descriptor = DependencyPropertyDescriptor.FromProperty(MyControl.MyPropertyProperty, typeof(MyControl));
object value = descriptor.GetValue(myControl);
descriptor.SetValue(myControl, newValue);

Binding binding = new Binding("MyProperty");
object value = binding.ProvideValue(new BindingProvideValueTarget(myControl, null, null, null, null, null, null));

MultiBinding multiBinding = new MultiBinding();
multiBinding.Bindings.Add(new Binding("MyProperty1"));
multiBinding.Bindings.Add(new Binding("MyProperty2"));
multiBinding.Converter = new MyMultiBindingConverter();
object value = multiBinding.ProvideValue(new BindingProvideValueTarget(myControl, null, null, null, null, null, null));