查找通过反射性能可空类型 [英] Find type of nullable properties via reflection

问题描述

我检查通过反射一个对象的属性，并继续处理每个属性的数据类型。这里是我的（减少）来源：

I examine the properties of an object via reflection and continue processing the data type of each property. Here is my (reduced) source:

private void ExamineObject(object o)
{
  Type type = default(Type);
  Type propertyType = default(Type);
  PropertyInfo[] propertyInfo = null;

  type = o.GetType();

  propertyInfo = type.GetProperties(BindingFlags.GetProperty |
                                    BindingFlags.Public |
                                    BindingFlags.NonPublic |
                                    BindingFlags.Instance);
  // Loop over all properties
  for (int propertyInfoIndex = 0; propertyInfoIndex <= propertyInfo.Length - 1; propertyInfoIndex++)
  {
    propertyType = propertyInfo[propertyInfoIndex].PropertyType;
  }
}

我的问题是，我最近需要处理可空。属性，但我不知道如何获得一个可空属性的类型

My problem is, that I newly need to handle nullable properties, but I have no clue how to get the type of a nullable property.

推荐答案

可能的解决方案：

    propertyType = propertyInfo[propertyInfoIndex].PropertyType;
    if (propertyType.IsGenericType &&
        propertyType.GetGenericTypeDefinition() == typeof(Nullable<>))
    {
      propertyType = propertyType.GetGenericArguments()[0];
    }

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