这是一个已知的动态绑定issue。
以下是一些变通方法。
使用ICollection<dynamic>
代替:
void Main()
{
IFoo foo = new Foo();
dynamic a = new System.Dynamic.ExpandoObject();
a.Prop = 10000;
dynamic b = new System.Dynamic.ExpandoObject();
b.Prop = "Some Text";
foo.Bars.Add(a);
foo.Bars.Add(b);
}
public interface IFoo
{
ICollection<dynamic> Bars { get; set; }
}
public class Foo : IFoo
{
public Foo()
{
Bars = new List<dynamic>();
}
public ICollection<dynamic> Bars { get; set; }
}
还是直线上升List<dynamic>
:
public interface IFoo
{
List<dynamic> Bars { get; set; }
}
public class Foo : IFoo
{
public Foo()
{
Bars = new List<dynamic>();
}
public List<dynamic> Bars { get; set; }
}
或者使用dynamic foo
:
void Main()
{
dynamic foo = new Foo();
dynamic a = new System.Dynamic.ExpandoObject();
a.Prop = 10000;
dynamic b = new System.Dynamic.ExpandoObject();
b.Prop = "Some Text";
foo.Bars.Add(a);
foo.Bars.Add(b);
}
还是不动绑定add
,通过转换成object
:
void Main()
{
IFoo foo = new Foo();
dynamic a = new System.Dynamic.ExpandoObject();
a.Prop = 10000;
dynamic b = new System.Dynamic.ExpandoObject();
b.Prop = "Some Text";
foo.Bars.Add((object)a);
foo.Bars.Add((object)b);
}
或使用像我即兴接口第三方框架,ActLike & Prototype Builder Syntax(中的NuGet)更有表现。
void Main()
{
dynamic New = Builder.New<ExpandoObject>();
IFoo foo = Impromptu.ActLike(
New.Foo(
Bars: New.List(
New.Obj(Prop:10000),
New.Obj(Prop:"Some Text")
)
)
);
}
public interface IFoo
{
IList<dynamic> Bars { get; set; }
}
的[使用动态与.NET4泛型集合时无法理解的例外]
可能重复(http://stackoverflow.com/questions/7996491/cant-understand-the-exception-when- using-dynamic-with-generic-collection-in-ne) – 2013-04-10 10:10:05
你会发布你得到的异常吗? – 2013-04-11 13:16:15