查找键为特定类型的字典对象的属性

Question

我需要编写一个泛型类型为T的扩展方法，该方法遍历对象的所有属性，并对那些值类型为T的字典做一些事情:

public static T DoDictionaries<T,t>(T source, Func<t,t> cleanUpper)
{
 Type objectType = typeof(T);
 List<PropertyInfo> properties = objectType.GetProperties().ToList();
 properties.Each(prop=>
      {
        if (typeof(Dictionary<????, t>).IsAssignableFrom(prop.PropertyType))
           {
                Dictionary<????, t> newDictionary = dictionary
                     .ToDictionary(kvp => kvp.Key, kvp => cleanUpper(dictionary[kvp.Key]));
                prop.SetValue(source, newDictionary);
           }
      });
 return source;
}

我不能使用另一个泛型"k"作为字典键的类型，因为在一个对象中可以有许多具有不同键类型的字典。显然，必须做一些不同的事情，而不是上面的代码。我只是不知道该怎么做。由于

Answer 1

public static TSource DoDictionaries<TSource, TValue>(TSource source, Func<TValue, TValue> cleanUpper)
    {
        Type type = typeof(TSource);
        PropertyInfo[] propertyInfos = type
            .GetProperties()
            .Where(info => info.PropertyType.IsGenericType &&
                           info.PropertyType.GetGenericTypeDefinition() == typeof (Dictionary<,>) &&
                           info.PropertyType.GetGenericArguments()[1] == typeof (TValue))
            .ToArray();
        foreach (var propertyInfo in propertyInfos)
        {
            var dict = (IDictionary)propertyInfo.GetValue(source, null);
            var newDict = (IDictionary)Activator.CreateInstance(propertyInfo.PropertyType);
            foreach (var key in dict.Keys)
            {
                newDict[key] = cleanUpper((TValue)dict[key]);
            }
            propertyInfo.SetValue(source, newDict, null);
        }
        return source;
    }