问将对象属性映射到字典的最有效方法，其中键使用扩展方法表示路径。

EN

public static IDictionary<string, string> GetProperties<T>(this T obj)
    where T : class
{
    var properties = obj.GetPropertyList();
    return properties.ToDictionary(prop => prop.Item1, prop => prop.Item2);
}

public static IEnumerable<Tuple<string, string>> GetPropertyList<T>(this T obj)
    where T : class
{
    if (obj == null)
        throw new ArgumentNullException("obj");

    Type t = obj.GetType();

    return GetProperties(obj, t, t.Name);
}

private static IEnumerable<Tuple<string, string>> GetProperties(object obj, Type objType, string propertyPath)
{
    // If atomic property, return property value with path to property
    if (objType.IsValueType || objType.Equals(typeof(string)))
        return Enumerable.Repeat(Tuple.Create(propertyPath, obj.ToString()), 1);

    else
    {
        // Return empty value for null values
        if (obj == null)
            return Enumerable.Repeat(Tuple.Create(propertyPath, string.Empty), 1);

        else
        {
            // Recursively examine properties; add properties to property path
            return from prop in objType.GetProperties()
                   where prop.CanRead && !prop.GetIndexParameters().Any()
                   let propValue = prop.GetValue(obj, null)
                   let propType = prop.PropertyType
                   from nameValPair in GetProperties(propValue, propType, string.Format("{0}.{1}", propertyPath, prop.Name))
                   select nameValPair;
        }
    }
}