c# - C#如何将带有IList的对象转换为IList

Question

I have an object which implements IList interface, I want to cast it to IList<object> or List<object>, I tried

IList<object> a=(IList<object>)b;
List<object> a=(IList<object>)b;
IList<object> a=(List<object>)b;
List<object> a=(List<object>)b;

These are not working. Please help, thanks. To clarify:

b is an object pass as parameter from outside. It implements IList interface. For example,

public class a
{
  string name;
  List<a> names;
}
public void func(object item)
{
  object dataLeaves = data.GetType().GetProperty("names").GetValue(dataInput, null);
  if (dataLeaves != null && dataLeaves.GetType().GetInterfaces().Any(t =>t.IsGenericType && t.GetGenericTypeDefinition() == typeof(IList<>)))
  {
    List<object> a=(List<object>) dataLeaves; //Need to convert the dataLeaves to list or IList
  }
}

score 16 · Accepted Answer

如果现有对象未实现该接口，则无法将其转换为，但您可以使用 LINQ 轻松IList<object>构建新对象： List<object>

List<object> = b.Cast<object>().ToList();

score 3 · Accepted Answer

3

找到了答案：

IEnumerable<object> a = dataLeaves as IEnumerable<object>;

于 2013-02-07T20:36:40.803 回答

score 0 · Accepted Answer

一个IList根本不是一个IList<object>。对象实际上实现这两个接口的可能性极小，因此强制转换永远不会成功。您需要创建一个新的列表对象来实现IList<object>：

IList<object> a= b.OfType<object>.ToList();

3 回答 3

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