如何绑定到静态属性编程？ [英] How to bind to static property programmatically?

问题描述

如何绑定到静态属性编程？我可以在C＃中使用，使

How to bind to static property programmatically? What can I use in C# to make

{Binding Source={x:Static local:MyClass.StaticProperty}}

更新：是有可能做OneWayToSource结合？据我所知，双向是不可能的，因为有对静态对象没有更新事件（至少在.NET 4中）。我不能实例化对象，因为它是静态的。

Update: is it possible to do OneWayToSource binding? I understand that TwoWay is not possible because there are no update events on static objects (at least in .NET 4). I cannot instantiate object because it is static.

推荐答案

单向绑定的

OneWay binding

让我们假设你有类国家与静态属性名称。

Let's assume that you have class Country with static property Name.

public class Country
{
  public static string Name { get; set; }
}

和现在你要绑定的TextBlock 名称到 TextProperty $ C>。

And now you want binding property Name to TextProperty of TextBlock.

Binding binding = new Binding();
binding.Source = Country.Name;
this.tbCountry.SetBinding(TextBlock.TextProperty, binding);

更新：双向绑定的

Update: TwoWay binding

国家类看起来是这样的：

public static class Country
    {
        private static string _name;

        public static string Name
        {
            get { return _name; }
            set
            {
                _name = value;
                Console.WriteLine(value); /* test */
            }
        }
    }

，现在我们要这个属性名称结合文本框，这样：

Binding binding = new Binding();
binding.Source = typeof(Country);
binding.Path = new PropertyPath(typeof(Country).GetProperty("Name"));
binding.Mode = BindingMode.TwoWay;
binding.UpdateSourceTrigger = UpdateSourceTrigger.PropertyChanged;
this.tbCountry.SetBinding(TextBox.TextProperty, binding);

如果你想更新的目标，你必须使用 BindingEx pression 及功能 UpdateTarget ：

If you want update target you must use BindingExpression and function UpdateTarget:

Country.Name = "Poland";

BindingExpression be = BindingOperations.GetBindingExpression(this.tbCountry, TextBox.TextProperty);
be.UpdateTarget();

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