using System;using System.Collections.Generic;using System.Text;using System.Runtime.InteropServices;using System.IO;using System.Security.Cryptography;        public class WriteIniFile{    private string strKey = "GZ530@%@!";    public string strinipath;    [DllImport("kernel32")]    private static extern long WritePrivateProfileString(string StrProjcetName, string skey, string sval, string sfilePath);    [DllImport("kernel32")]    private static extern int GetPrivateProfileString(string StrProjcetName, string skey, string sdef, StringBuilder retVal, int Intsize, string sfilePath);        /// 
    /// 构造方法    /// 
    /// 文件路径    public WriteIniFile(string INIPath)    {        strinipath = INIPath;    }    /// 
    /// 写入INI文件    /// 
    /// 项目名称(如 [MyProjectName] )    /// 键    /// 值    public void IniWriteValue(string StrProjcetName, string skey, string StrValue)    {        WritePrivateProfileString(StrProjcetName, skey, StrValue, this.strinipath);    }        /// 
    /// Md5加密写入INI文件    /// 
    /// 项目名称(如 [MyProjectName] )    /// 键    /// 值    public void IniMd5WriteValue(string StrProjcetName, string skey, string StrValue)    {        string str = MD5Encrypt(StrValue, strKey);        WritePrivateProfileString(StrProjcetName, skey, str, this.strinipath);    }        /// 
    /// 读出INI文件    /// 
    /// 项目名称(如 [MyProjectName] )    /// 键    public string IniReadValue(string StrProjcetName, string skey)    {        StringBuilder temp = new StringBuilder(500);        int i = GetPrivateProfileString(StrProjcetName, skey, "", temp, 500, this.strinipath);        return temp.ToString();    }        /// 
    /// 读出INI文件    /// 
    /// 项目名称(如 [MyProjectName] )    /// 键    public string IniMd5ReadValue(string StrProjcetName, string skey)    {        StringBuilder temp = new StringBuilder(500);        int i = GetPrivateProfileString(StrProjcetName, skey, "", temp, 500, this.strinipath);        string str = temp.ToString();            return MD5Decrypt(str, strKey);    }        /// 
    /// 验证文件是否存在    /// 
    /// 
     
      布尔值
         public bool ExistINIFile()    {        return File.Exists(strinipath);    }        /// 
    /// 带参数的MD5加密    /// 
    ///     ///     /// 
         public string MD5Encrypt(string spToEncrypt, string sKey)    {        DESCryptoServiceProvider des = new DESCryptoServiceProvider();        byte[] inputByteArray = Encoding.Default.GetBytes(spToEncrypt);        des.skey = ASCIIEncoding.ASCII.GetBytes(sKey);        des.IV = ASCIIEncoding.ASCII.GetBytes(sKey);        MemoryStream ms = new MemoryStream();        CryptoStream cs = new CryptoStream(ms, des.CreateEncryptor(), CryptoStreamMode.Write);        cs.Write(inputByteArray, 0, inputByteArray.Length);        cs.FlushFinalBlock();        StringBuilder ret = new StringBuilder();        foreach (byte b in ms.ToArray())        {            ret.AppendFormat("{0:X2}", b);        }        ret.ToString();        return ret.ToString();            }        /// 
    /// 带参数的MD5解密    /// 
    ///     ///     /// 
         public string MD5Decrypt(string spToDecrypt, string sKey)    {        DESCryptoServiceProvider des = new DESCryptoServiceProvider();            byte[] inputByteArray = new byte[spToDecrypt.Length / 2];        for (int x = 0; x < spToDecrypt.Length / 2; x++)        {            int i = (Convert.ToInt32(spToDecrypt.Substring(x * 2, 2), 16));            inputByteArray[x] = (byte)i;        }            des.skey = ASCIIEncoding.ASCII.GetBytes(sKey);        des.IV = ASCIIEncoding.ASCII.GetBytes(sKey);        MemoryStream ms = new MemoryStream();        CryptoStream cs = new CryptoStream(ms, des.CreateDecryptor(), CryptoStreamMode.Write);        cs.Write(inputByteArray, 0, inputByteArray.Length);        cs.FlushFinalBlock();            StringBuilder ret = new StringBuilder();            return System.Text.Encoding.Default.GetString(ms.ToArray());    }}