方案：

我目前正在写一个层来抽象3相似的web服务为一体可用类。每个Web服务公开一组共享通用对象。我创建了一组利用通用的中介物。然而，在我的层我需要到web服务对象和我的对象之间进行转换。

I'm currently writing a layer to abstract 3 similar webservices into one useable class. Each webservice exposes a set of objects that share commonality. I have created a set of intermediary objects which exploit the commonality. However in my layer I need to convert between the web service objects and my objects.

我使用反射来创建相应类型在运行时之前我打这个电话来，像这样的网络服务：

I've used reflection to create the appropriate type at run time before I make the call to the web service like so:

    public static object[] CreateProperties(Type type, IProperty[] properties)
    {
        //Empty so return null
        if (properties==null || properties.Length == 0)
            return null;

        //Check the type is allowed
        CheckPropertyTypes("CreateProperties(Type,IProperty[])",type);

        //Convert the array of intermediary IProperty objects into
        // the passed service type e.g. Service1.Property
        object[] result = new object[properties.Length];
        for (int i = 0; i < properties.Length; i++)
        {
            IProperty fromProp = properties[i];
            object toProp = ReflectionUtility.CreateInstance(type, null);
            ServiceUtils.CopyProperties(fromProp, toProp);
            result[i] = toProp;
        }
        return result;
    }

下面是我的呼唤code，从我的服务实现之一：

Here's my calling code, from one of my service implementations:

Property[] props = (Property[])ObjectFactory.CreateProperties(typeof(Property), properties);
_service.SetProperties(folderItem.Path, props);

因此​​，每个服务公开，我躲在我自己的实现我的iProperty界面的不同的属性对象。

So each service exposes a different "Property" object which I hide behind my own implementation of my IProperty interface.

反射code工作在生产的对象，其元素为相应类型的数组单元测试。但是，调用code失败：

The reflection code works in unit tests producing an array of objects whose elements are of the appropriate type. But the calling code fails:

System.InvalidCastException：无法   投类型的对象System.Object的[]'   输入   MyProject.Property []

System.InvalidCastException: Unable to cast object of type 'System.Object[]' to type 'MyProject.Property[]

任何想法？

我下的是IM pression，从对象的任何施法只要会正常工作所包含的对象是可转换？

I was under the impression that any cast from Object will work as long as the contained object is convertable?

推荐答案

备选答案：泛型

public static T[] CreateProperties<T>(IProperty[] properties)
    where T : class, new()
{
    //Empty so return null
    if (properties==null || properties.Length == 0)
        return null;

    //Check the type is allowed
    CheckPropertyTypes("CreateProperties(Type,IProperty[])",typeof(T));

    //Convert the array of intermediary IProperty objects into
    // the passed service type e.g. Service1.Property
    T[] result = new T[properties.Length];
    for (int i = 0; i < properties.Length; i++)
    {
        T[i] = new T();
        ServiceUtils.CopyProperties(properties[i], t[i]);
    }
    return result;
}

然后您的电话code就变成了：

Then your calling code becomes:

Property[] props = ObjectFactory.CreateProperties<Property>(properties);
_service.SetProperties(folderItem.Path, props);

干净多了：）

Much cleaner :)