public static string Encrypt(string Text, string sKey)
{
    DESCryptoServiceProvider dESCryptoServiceProvider = new DESCryptoServiceProvider();
    byte[] bytes = Encoding.Default.GetBytes(Text);
    dESCryptoServiceProvider.Key = Encoding.ASCII.GetBytes(FormsAuthentication.HashPasswordForStoringInConfigFile(sKey, "md5").Substring(0, 8));
    dESCryptoServiceProvider.IV = Encoding.ASCII.GetBytes(FormsAuthentication.HashPasswordForStoringInConfigFile(sKey, "md5").Substring(0, 8));
    MemoryStream expr_5B = new MemoryStream();
    CryptoStream expr_68 = new CryptoStream(expr_5B, dESCryptoServiceProvider.CreateEncryptor(), CryptoStreamMode.Write);
    expr_68.Write(bytes, 0, bytes.Length);
    expr_68.FlushFinalBlock();
    StringBuilder stringBuilder = new StringBuilder();
    byte[] array = expr_5B.ToArray();
    for (int i = 0; i < array.Length; iPP)
    {
        byte b = array[i];
        stringBuilder.AppendFormat("{0:X2}", b);
    }
    return stringBuilder.ToString();
}

the environmental background of the problems and what methods you have tried

related codes

/ / Please paste the code text below (do not replace the code with pictures)

what result do you expect? What is the error message actually seen?