C#的深度拷贝以及获取枚举注释

C#的深度拷贝以及获取枚举注释

• • 1.使用该扩展类需添加引用
  • 2.工具类

1.使用该扩展类需添加引用

using System;
using System.ComponentModel;
using System.IO;
using System.Reflection;
using System.Runtime.Serialization.Formatters.Binary;

2.工具类

public static class ExtensionHelper
{
    /// <summary>
    /// 深度拷贝
    /// </summary>
    /// <typeparam name="T">需要被深度拷贝对象的类型，若类未设置[Serializable]则返回null</typeparam>
    /// <param name="obj">深度拷贝的对象，若类未设置[Serializable]则返回null</param>
    /// <returns></returns>
    public static T DeepCopy<T>(this T obj)
    {
        if (!obj.GetType().IsSerializable)
        {
            return default(T);
        }
        using (MemoryStream ms = new MemoryStream())
        {
            BinaryFormatter formatter = new BinaryFormatter();
            formatter.Serialize(ms, obj);
            ms.Position = 0;

            return (T)formatter.Deserialize(ms);
        }
    }

    /// <summary>
    /// 获取枚举的中文注释
    /// </summary>
    /// <param name="e">需要获取中文注释的枚举类型注释，对象的注释格式为：[Description("中文注释")]</param>
    /// <returns></returns>
    public static string EnumDesc(this Enum e)
    {
        var enumType = e.GetType();
        
        //正常标识
        FieldInfo EnumInfo = enumType.GetField(e.ToString());
        DescriptionAttribute[] EnumAttributes = (DescriptionAttribute[])EnumInfo.
            GetCustomAttributes(typeof(DescriptionAttribute), false);
        if (EnumAttributes.Length > 0)
        {
            return EnumAttributes[0].Description;
        }
        return e.ToString();
    }
}