实现INotifyPropertyChanged

最新推荐文章于 2023-08-02 16:47:51 发布

转载最新推荐文章于 2023-08-02 16:47:51 发布 · 71 阅读

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原文链接：http://www.cnblogs.com/stonescs/p/3207765.html

本文介绍了一个抽象基类BindableBase，该类实现了INotifyPropertyChanged接口，并使用CallerMemberName特性来自动获取属性名。这有助于简化属性变更的通知过程，并减少了代码中硬编码字符串的需求。

using System.ComponentModel;
using System.Runtime.CompilerServices;

namespace Test
{
    public abstract class BindableBase : INotifyPropertyChanged
    {
        public event PropertyChangedEventHandler PropertyChanged;

        protected bool SetProperty<T>(ref T storage, T value,
                                      [CallerMemberName] string propertyName = null)
        {
            if (Equals(storage, value)) return false;
            storage = value;
            OnPropertyChanged(propertyName);
            return true;
        }

        private void OnPropertyChanged(string propertyName)
        {
            PropertyChangedEventHandler handler = PropertyChanged;
            if (handler != null)
            {
                handler(this, new PropertyChangedEventArgs(propertyName));
            }
        }
    }
}