MVVM模式提取函数

<font style="color:rgb(51, 51, 51);">ObserableObject</font>和<font style="color:rgb(51, 51, 51);">RelayCommand</font>。步骤如下：

using Prism.Mvvm;
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Diagnostics;
using System.Linq;
using System.Linq.Expressions;
using System.Text;
using System.Threading.Tasks;
namespace MVVMSum
{
    [Serializable]
    public abstract class ObserableObject : INotifyPropertyChanged
    {
        [field:NonSerialized]
        public event PropertyChangedEventHandler PropertyChanged;
        protected virtual void OnPropertyChanged(PropertyChangedEventArgs e)
        {
            var handler = this.PropertyChanged;
            if (handler != null)
            {
                handler(this, e);
            }
        }
        protected void RaisePropertyChanged<T>(Expression<Func<T>> propertyExpression)
        {
            var propertyName = PropertySupport.ExtractPropertyName(propertyExpression);
            this.RaisePropertyChanged(propertyName);
        }
        protected void RaisePropertyChanged(string propertyName)
        {
            VerifyPropertyName(propertyName);
            OnPropertyChanged(new PropertyChangedEventArgs(propertyName));
        }
        [Conditional("DEBUG")]
        [DebuggerStepThrough]
        public void VerifyPropertyName(string propertyName)
        {
            if (TypeDescriptor.GetProperties(this)[propertyName] == null)
            {
                Debug.Fail("无效属性名:" + propertyName);
            }
        }
    }
}

未完结，需要看一下源码。这里记一个知识点：MVVM一个很好的框架——Prism。