C#创建及读取DAT文件操作

/// <summary>
/// 加密、解密
/// </summary>
public class EncryptUtilSeal
{
 private static byte[] key = new byte[] { 78, 56, 61, 94, 12, 88, 56, 63, 66, 111, 102, 77, 1, 186, 97, 45 };
 private static byte[] iv = new byte[] { 36, 34, 42, 122, 242, 87, 2, 90, 59, 117, 123, 63, 72, 171, 130, 61 };
 
 private static IFormatter S_Formatter = null;
 
 static EncryptUtilSeal()
 {
  S_Formatter = new BinaryFormatter();//创建一个序列化的对象
 }
 /// <summary>
 /// 采用Rijndael128位加密二进制可序列化对象至文件
 /// </summary>
 /// <param name="para">二进制对象</param>
 /// <param name="filePath">文件路径</param>
 /// <returns></returns>
 public static bool EncryptObject(object para, string filePath)
 {
  //创建.bat文件 如果之前错在.bat文件则覆盖，无则创建
  using (Stream fs = new FileStream(filePath, FileMode.Create, FileAccess.Write, FileShare.None))
  {
   RijndaelManaged RMCrypto = new RijndaelManaged();
   CryptoStream csEncrypt = new CryptoStream(fs, RMCrypto.CreateEncryptor(key, iv), CryptoStreamMode.Write);
   S_Formatter.Serialize(csEncrypt, para);//将数据序列化后给csEncrypt
   csEncrypt.Close();
   fs.Close();
   return true;
  }
 }
 
 /// <summary>
 /// 从采用Rijndael128位加密的文件读取二进制对象
 /// </summary>
 /// <param name="filePath">文件路径</param>
 /// <returns>二进制对象</returns>
 public static object DecryptObject(string filePath)
 {
  //打开.bat文件
  using (Stream fs = new FileStream(filePath, FileMode.Open, FileAccess.Read, FileShare.Read))
  {
   object para;
   RijndaelManaged RMCrypto = new RijndaelManaged();
   CryptoStream csEncrypt = new CryptoStream(fs, RMCrypto.CreateDecryptor(key, iv), CryptoStreamMode.Read);
   para = S_Formatter.Deserialize(csEncrypt); //将csEncrypt反序列化回原来的数据格式；
   csEncrypt.Close();
   fs.Close();
   return para;
  }
 }
}

string ConfigFilePath = Path.Combine(System.AppDomain.CurrentDomain.BaseDirectory, "config.dat");
//写入
Hashtable para = new Hashtable();
para.Add("ZH", tbxZH.Text);
para.Add("MM", pbxMM.Password);
EncryptUtilSeal.EncryptObject(para, ConfigFilePath);
 
//读取
Hashtable para = new Hashtable();
object obj = EncryptUtilSeal.DecryptObject(ConfigFilePath);
para = obj as Hashtable;
string ZH = para["ZH"].ToString();
string MM = para["MM"].ToString();

int f_c = 900;  //发射频率
int h_te = 30;  //基站天线高度
int h_re = 1;  //移动台天线高度
int d;    //传输距离
double L;
for (d = 10; d <= 20; d++)
{
  L = 69.55 + 26.16 * (Math.Log10(f_c)) - 13.82 * (Math.Log10(h_te)) - (3.2 * (Math.Log10(11.75 * h_re)) * (Math.Log10(11.75 * h_re)) - 4.97) + (44.9 - 6.55 * (Math.Log10(h_te))) * (Math.Log10(d));
  Txt_data.Text += d.ToString();
  Txt_data.Text += " ";
  Txt_data.Text += L.ToString("0.00");  //保留两位小数
  Txt_data.Text += "\r\n";     //textbox的换行
}

 FileStream fs = new FileStream("D:\\a.dat", FileMode.Create); //支持文件读写
 BinaryWriter bw = new BinaryWriter(fs);      //二进制输入
 bw.Write(System.Text.Encoding.Default.GetBytes(this.Txt_data.Text)); 
 //转化为二进制写入文件
   
 bw.Flush();    //清理缓冲器
 bw.Close();
 fs.Close();