c# 如何通过反射获取派生 class 属性的列表，首先按基础 class 属性排序，然后派生 class 道具

Question

我希望从派生的 class 中获取属性列表我写了一个函数，给出了我的属性列表。我的问题是我希望属性列表包含 base class 的第一个属性和 derived class 的后属性我怎样才能做到这一点？现在我在 derived 中获得第一个属性，然后在 base

中获得

PropertyInfo[] props = typeof(T).GetProperties();
        Dictionary<string, ColumnInfo> _colsDict = new Dictionary<string, ColumnInfo>();

        foreach (PropertyInfo prop in props)
        {
            object[] attrs = prop.GetCustomAttributes(true);
            foreach (object attr in attrs)
            {
                ColumnInfo colInfoAttr = attr as ColumnInfo;
                if (colInfoAttr != null)
                {
                    string propName = prop.Name;
                    _colsDict.Add(propName, colInfoAttr);                        
                }
            }
        }

Answer 1

如果你知道基础 class 类型，你可能会这样做：

  public static Dictionary<string, object> GetProperties<Derived, Base>()
  {
        var onlyInterestedInTypes = new[] { typeof(Derived).Name, typeof(Base).Name };

        return Assembly
            .GetAssembly(typeof(Derived))
            .GetTypes()
            .Where(x => onlyInterestedInTypes.Contains(x.Name))
            .OrderBy(x => x.IsSubclassOf(typeof(Base)))
            .SelectMany(x => x.GetProperties())
            .GroupBy(x => x.Name)
            .Select(x => x.First())
            .ToDictionary(x => x.Name, x => (object)x.Name);
  }

对您来说重要的部分是 .OrderBy(x => x.IsSubclassOf(typeof(Base)))，它将订购属性。

c# 如何通过反射获取派生 class 属性的列表，首先按基础 class 属性排序，然后派生 class 道具

c# how to get list of derived class properties by reflection, ordered by base class properties first, and then derived class props

c#

reflection

inheritance

properties

derived-class