C#实现注册表 LocalMachine 目录下CURD工具类

【1】注册表是什么？
         百度百科 https://baike.baidu.com/item/%E6%B3%A8%E5%86%8C%E8%A1%A8/101856?fr=aladdin

【2】怎么打开注册表？
         Windows+R >>>>>> regedit

【3】C# 源码 

       

 /// <summary>
     /// 注册表 CURD
     /// 在LocalMachine 目录文件下
     /// </summary>
     public class RegeditUtils
     {
         /// <summary>
         /// 注册信息节点是否存在
         /// </summary>
         /// <param name="key">"SOFTWARE\\Microsoft"格式</param>
         /// <returns></returns>
         public static bool IsExsits(string key)
         {
             var indicator = true;
             if (Registry.LocalMachine.OpenSubKey(key) == null)
             {
                 indicator = false;
             }
             return indicator;
         }
         /// <summary>
         /// 创建注册信息
         /// </summary>
         /// <param name="key">"SOFTWARE\\Microsoft"格式</param>
         public static void Create(string key)
         {
             Registry.LocalMachine.CreateSubKey(key);
         }
         /// <summary>
         /// 更新注册表字段值
         /// </summary>
         /// <param name="rsg">传入注册表节点</param>
         /// <param name="name">节点内字段名称</param>
         /// <param name="value">需要设置的值</param>
         public static void Update(RegistryKey rsg,string name,string value)
         {
             if (rsg!=null)
             {
                 if (!string.IsNullOrEmpty(name))
                 {
                     rsg.SetValue(name, value);  //写入
                 }
                 rsg.Close();  //关闭
             }
         }
         /// <summary>
         /// 获取注册表节点实体
         /// </summary>
         /// <param name="key">"SOFTWARE\\Microsoft"格式</param>
         /// <returns></returns>
         public static RegistryKey Read(string key)
         {
             RegistryKey rsg = Registry.LocalMachine.OpenSubKey(key, true);
             return rsg;
         }

         /// <summary>
         /// 获取注册表节点实体内某个属性的值
         /// </summary>
         /// <param name="key">"SOFTWARE\\Microsoft"格式</param>
         /// <param name="prop">传入属性的键值</param>
         /// <returns></returns>
         public static string ReadPropValue(string key,string prop)
         {
             var res = "";
             RegistryKey rsg = Registry.LocalMachine.OpenSubKey(key, true);
             if (rsg!=null)
             {
                 var obj =  rsg.GetValue(prop);
                 if (obj!=null)
                 {
                     res = obj.ToString();
                 }
             }
             return res;
         }
         /// <summary>
         /// 删除注册表节点
         ///
         /// </summary>
         /// <param name="key">"SOFTWARE\\Microsoft"格式</param>
         public static void Delete(string key)
         {
             if (IsExsits(key))
             {
                 Registry.LocalMachine.DeleteSubKey(key);
             }
         }

         /// <summary>
         /// 创建注册表节点，并对相应字段赋值
         /// </summary>
         /// <param name="key">节点</param>
         /// <param name="name">属性名称</param>
         /// <param name="value">值</param>
         public static void CreateRegedit(string key, string name, string value)
         {
             try
             {

                 //判断当前节点是否存在
                 if (!IsExsits(key))
                 {
                     //不存在该节点，创建节点
                     Create(key);
                 }
                 //获取该节点
                 var rsg = Read(key);
                 //该节点字段属性赋值
                 Update(rsg, name, value);
             }
             catch (Exception ex)
             {
                 Log.Error(ex);
             }

         }
     }

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