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

i am looking to get a list of properties from a derived class i wrote a function that gives my a list of properties. my problem is that i want the list of properties to contain first properties of base class and after properties of derived class how can i do this? now i get first properties in derived and then of base

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);                        
                }
            }
        }