INI 文件的读写操作

在C#中对INI文件进行读写操作,在此要引入using System.Runtime.InteropServices; 命名空间，具体方法如下：

  #region  变量

        private  static readonly string strFilePath = AppDomain.CurrentDomain.BaseDirectory.ToString() + "App.ini";//INI文件路径

        #endregion 

        #region  私有方法

        /// <summary>
        /// 写入INI文件
        /// </summary>
        /// <param name="section">节点名称[如[TypeName]]</param>
        /// <param name="key">键</param>
        /// <param name="val">值</param>
        /// <param name="filepath">文件路径</param>
        /// <returns></returns>
        [DllImport("kernel32")]
        private static extern long WritePrivateProfileString(string section, string key, string val, string filepath);

        /// <summary>
        /// 读取INI文件
        /// </summary>
        /// <param name="section">节点名称</param>
        /// <param name="key">键</param>
        /// <param name="def">值</param>
        /// <param name="retval">stringbulider对象</param>
        /// <param name="size">字节大小</param>
        /// <param name="filePath">文件路径</param>
        /// <returns></returns>
        [DllImport("kernel32")]
        private static extern int GetPrivateProfileString(string section, string key, string def, StringBuilder retval, int size, string filePath);

        #endregion

        #region  公共方法 

        public  static string GetValue(string section, string key)
        {
            try
            {
                int size = 2048;
                StringBuilder temp = new StringBuilder(size);
                GetPrivateProfileString(section, key, "", temp, size, strFilePath);
                return temp.ToString();
            }
            catch(Exception e)
            {
                throw new Exception(e.Message);
            }

        }

        public static bool WriteValue( string section, string key, string value)
        {
            try
            {
               long length=  WritePrivateProfileString(section, key, value, strFilePath);
                return length>0;
            }
            catch(Exception e)
            {
                throw new Exception(e.Message);
            }
        }

        #endregion