/// <summary>     /// 读写INI文件的类。     /// </summary>     public class INIHelper     {         // 读写INI文件相关。         [DllImport("kernel32.dll", EntryPoint = "WritePrivateProfileString", CharSet = CharSet.Ansi)]         public static extern long WritePrivateProfileString(string section, string key, string val, string filePath);         [DllImport("kernel32.dll", EntryPoint = "GetPrivateProfileString", CharSet = CharSet.Ansi)]         public static extern int GetPrivateProfileString(string section, string key, string def, StringBuilder retVal, int size, string filePath);         [DllImport("kernel32.dll", EntryPoint = "GetPrivateProfileSectionNames", CharSet = CharSet.Ansi)]         public static extern int GetPrivateProfileSectionNames(IntPtr lpszReturnBuffer, int nSize, string filePath);         [DllImport("KERNEL32.DLL ", EntryPoint = "GetPrivateProfileSection", CharSet = CharSet.Ansi)]         public static extern int GetPrivateProfileSection(string lpAppName, byte[] lpReturnedString, int nSize, string filePath);         /// <summary>         /// 向INI写入数据。         /// </summary>         /// <PARAM name="Section">节点名。</PARAM>         /// <PARAM name="Key">键名。</PARAM>         /// <PARAM name="Value">值名。</PARAM>         public static void Write(string Section, string Key, string Value, string path)         {             WritePrivateProfileString(Section, Key, Value, path);         }         /// <summary>         /// 读取INI数据。         /// </summary>         /// <PARAM name="Section">节点名。</PARAM>         /// <PARAM name="Key">键名。</PARAM>         /// <PARAM name="Path">值名。</PARAM>         /// <returns>相应的值。</returns>         public static string Read(string Section, string Key, string path)         {             StringBuilder temp = new StringBuilder(255);             int i = GetPrivateProfileString(Section, Key, "", temp, 255, path);             return temp.ToString();         }         /// <summary>         /// 读取一个ini里面所有的节         /// </summary>         /// <param name="sections"></param>         /// <param name="path"></param>         /// <returns></returns>         public static int GetAllSectionNames(out string[] sections, string path)         {             int MAX_BUFFER = 32767;             IntPtr pReturnedString = Marshal.AllocCoTaskMem(MAX_BUFFER);             int bytesReturned = GetPrivateProfileSectionNames(pReturnedString, MAX_BUFFER, path);             if (bytesReturned == 0)             {                 sections = null;                 return -1;             }             string local = Marshal.PtrToStringAnsi(pReturnedString, (int)bytesReturned).ToString();             Marshal.FreeCoTaskMem(pReturnedString);             //use of Substring below removes terminating null for split             sections = local.Substring(0, local.Length - 1).Split('\0');             return 0;         }         /// <summary>         /// 得到某个节点下面所有的key和value组合         /// </summary>         /// <param name="section"></param>         /// <param name="keys"></param>         /// <param name="values"></param>         /// <param name="path"></param>         /// <returns></returns>         public static int GetAllKeyValues(string section, out string[] keys, out string[] values, string path)         {             byte[] b = new byte[65535];             GetPrivateProfileSection(section, b, b.Length, path);             string s = System.Text.Encoding.Default.GetString(b);             string[] tmp = s.Split((char)0);             ArrayList result = new ArrayList();             foreach (string r in tmp)             {                 if (r != string.Empty)                     result.Add(r);             }             keys = new string[result.Count];             values = new string[result.Count];             for (int i = 0; i < result.Count; i++)             {                 string[] item = result[i].ToString().Split(new char[] { '=' });                 if (item.Length == 2)                 {                     keys[i] = item[0].Trim();                     values[i] = item[1].Trim();                 }                 else if (item.Length == 1)                 {                     keys[i] = item[0].Trim();                     values[i] = "";                 }                 else if (item.Length == 0)                 {                     keys[i] = "";                     values[i] = "";                 }             }             return 0;         }     }