C# 使用反射复制基类属性 [英] C# Using Reflection to copy base class properties

问题描述

我想使用反射将所有属性从 MyObject 更新到另一个.我遇到的问题是特定对象是从基类继承的，并且这些基类属性值没有更新.

I would like to update all properties from MyObject to another using Reflection. The problem I am coming into is that the particular object is inherited from a base class and those base class property values are not updated.

以下代码复制了顶级属性值.

The below code copies over top level property values.

public void Update(MyObject o)
{
    MyObject copyObject = ...

    FieldInfo[] myObjectFields = o.GetType().GetFields(
    BindingFlags.NonPublic | BindingFlags.Public | BindingFlags.Instance);

    foreach (FieldInfo fi in myObjectFields)
    {
        fi.SetValue(copyObject, fi.GetValue(o));
    }
}

我想看看是否还有更多 BindingFlags 属性可以用来帮助但无济于事.

I was looking to see if there were any more BindingFlags attributes I could use to help but to no avail.

推荐答案

试试这个:

public void Update(MyObject o)
{
    MyObject copyObject = ...
    Type type = o.GetType();
    while (type != null)
    {
        UpdateForType(type, o, copyObject);
        type = type.BaseType;
    }
}

private static void UpdateForType(Type type, MyObject source, MyObject destination)
{
    FieldInfo[] myObjectFields = type.GetFields(
        BindingFlags.NonPublic | BindingFlags.Public | BindingFlags.Instance);

    foreach (FieldInfo fi in myObjectFields)
    {
        fi.SetValue(destination, fi.GetValue(source));
    }
}

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