Question

此代码适用于4.0但在4.5中抛出ApplicationException: Binding.StaticSource cannot be set while using Binding.Source.：

public class Test
{
    public static string Prop { get; set; }
}

private void Button_Click(object sender, RoutedEventArgs e)
{
    var binding = new Binding
    {
        Source = typeof(Test),
        Path = new PropertyPath(typeof(Test).GetProperty("Prop")),
        Mode = BindingMode.OneWayToSource,
        UpdateSourceTrigger = UpdateSourceTrigger.PropertyChanged
    };
    BindingOperations.SetBinding(textBox1, TextBox.TextProperty, binding);
}

有解决方法吗？目标是以编程方式绑定到静态属性（OneWayToSource），而不实例化Test。

Answer 1

Source中您不需要static bindings财产。这甚至不会在.Net 4.0中运行。删除Source属性，它将 -

var binding = new Binding
{
    Path = new PropertyPath(typeof(Test).GetProperty("Prop")),
    Mode = BindingMode.OneWayToSource,
    UpdateSourceTrigger = UpdateSourceTrigger.PropertyChanged
};
BindingOperations.SetBinding(textBox1, TextBox.TextProperty, binding);

.NET 4.5打破了静态绑定

1 个答案: