C# Copy an object by value

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Deep cloning objects 39 answers

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There is a much simpler way of cloning an object to another by using JSON serializer. This trick requires no modification or implementation of interfaces on the cloned class, just a JSON serializer like JSON.NET.

public static T Clone<T>(T source)
{
    var serialized = JsonConvert.SerializeObject(source);
    return JsonConvert.DeserializeObject<T>(serialized);
}

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您可以使用此扩展方法来复制所有对象字段和属性。当您尝试复制作为引用类型的字段和属性时可能会出现一些错误。

public static T CopyObject<T>(this T obj) where T : new()
        {
            var type = obj.GetType();
            var props = type.GetProperties();
            var fields = type.GetFields();
            var copyObj = new T();
            foreach (var item in props)
            {
                item.SetValue(copyObj, item.GetValue(obj));
            }
            foreach (var item in fields)
            {
                item.SetValue(copyObj, item.GetValue(obj));
            }
            return copyObj;
        }

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