C# Dynamic之:ExpandoObject,DynamicObject,DynamicMetaOb的应用(上)

dynamic dynEO = new ExpandoObject();
dynEO.number = 10;
dynEO.Increment = new Action(() => { dynEO.number++; });

Console.WriteLine(dynEO.number);
dynEO.Increment();
Console.WriteLine(dynEO.number);

foreach (var property in (IDictionary<String, Object>)dynEO)
{
     Console.WriteLine(property.Key + ": " + property.Value);
}

static void Main(string[] args)
{
   ………
    ((INotifyPropertyChanged)dynEO).PropertyChanged += new PropertyChangedEventHandler(Program_PropertyChanged);
    dynEO.Name = "changed";
    dynEO.Name = "another";

    Console.ReadLine();
}

static void Program_PropertyChanged(object sender, PropertyChangedEventArgs e)
{
    Console.WriteLine("属性{0} 已更改", e.PropertyName);
}

class DynamicProduct : DynamicObject
{
    public string name;
    public int Id { get; set; }

    public void ShowProduct()
    {
        Console.WriteLine("Id={0} ,Name={1}", Id, name);
    }

    #region Override DynamicObject 的方法

    public override IEnumerable<string> GetDynamicMemberNames()
    {
        return base.GetDynamicMemberNames();
    }

    public override bool TryGetMember(GetMemberBinder binder, out object result)
    {
        Console.WriteLine("TryGetMember被调用了,Name:{0}", binder.Name);
        return base.TryGetMember(binder, out result);
    }

    public override bool TrySetMember(SetMemberBinder binder, object value)
    {
        Console.WriteLine("TrySetMember被调用了,Name:{0}", binder.Name);
        return base.TrySetMember(binder, value);
    }

    public override bool TryInvoke(InvokeBinder binder, object[] args, out object result)
    {
        Console.WriteLine("TryInvoke被调用了");
        return base.TryInvoke(binder, args, out result);
    }

    public override bool TryInvokeMember(InvokeMemberBinder binder, object[] args, out object result)
    {
        Console.WriteLine("TryInvokeMember被调用了,Name:{0}", binder.Name);
        return base.TryInvokeMember(binder, args, out result);
    }

    #endregion
}

static void Main(string[] args)
{
    dynamic dynProduct = new DynamicProduct();

    dynProduct.name = "n1"; //调用TrySetMember方法
    dynProduct.Id = 1;
    dynProduct.Id = dynProduct.Id + 3;
    dynProduct.ShowProduct();

    Console.ReadLine();
}