C#二进制与字符串互转换，十六进制转换为字符串、float、int

/// <summary>     /// 将 字符串 转成 二进制 “10011100000000011100011111111101”

/// </summary>

/// <param name="s"></param>

/// <returns></returns>

public static string bianma(string s)     {

byte[] data = Encoding.Unicode.GetBytes(s);

StringBuilder result = new StringBuilder(data.Length * 8);

foreach (byte b in data)

　　{

　　　　result.Append(Convert.ToString(b, 2).PadLeft(8, '0'));

　　}

return result.ToString();

}

/// <summary>

/// 将二进制 “10011100000000011100011111111101” 转成 字符串

/// </summary>

/// <param name="s"></param>

/// <returns></returns>

public static string jiema(string s)     {

System.Text.RegularExpressions.CaptureCollection cs =  System.Text.RegularExpressions.Regex.Match(s, @"([01]{8})+").Groups[1].Captures;

byte[] data = new byte[cs.Count];

for (int i = 0; i < cs.Count; i++)

{

　　data[i] = Convert.ToByte(cs[i].Value, 2);

}

return Encoding.Unicode.GetString(data, 0, data.Length);

}

/// <summary>

/// <函数：Decode>

///作用：将16进制数据编码转化为字符串

/// </summary>

/// <param name="strDecode"></param>

/// <returns></returns>

public string DecodeToString(string strDecode)

{

string sResult = "";

for (int i = 0; i < strDecode.Length / 4; i++)

{

　　sResult += int.Parse(strDecode.Substring(i * 4, 4), global::System.Globalization.NumberStyles.HexNumber);

}

　　return sResult;

}

/// <summary>

/// 将16进制数转为10进制数，并保留小数位数

/// </summary>

/// <param name="strDecode"></param>

/// <param name="i"></param>

/// <returns></returns>

public float DecodeToFloat(string strDecode, int i)

{

　　int num = Convert.ToInt32(strDecode, 16);

　　float result = (float.Parse(num.ToString())) / i;

　　return result;

}

/// <summary>

/// 将16进制数转为10进制数整型

/// </summary>

/// <param name="strDecode"></param>

/// <returns></returns>

public int DecodeToInt(string strDecode)

{

　　int result = Convert.ToInt32(strDecode, 16);

　　return result;

}

/// <summary>

/// 获取数据源(读取记事本)

/// </summary>

/// <returns></returns>

public string GetData()

{

string effectiveData = "0";//有效数据

try

{

FileStream fs = new FileStream(filePath, FileMode.Open, FileAccess.Read, FileShare.Read);

StreamReader sr = new StreamReader(fs, Encoding.GetEncoding("gb2312"));

string strText = "";

while (true){

string strTemp = sr.ReadLine();

if (strTemp != null)

{

strText += strTemp;

continue;

}

else

{

break;

}

}

strText = strText.Trim();

sr.Close();

fs.Close();

return effectiveData;

}

/// <summary>
   /// 清空记事本内容
   /// </summary>
        public void ClearText()
        {
            //StreamWriter sw = new StreamWriter(filePath, false);
            //sw.Write(string.Empty);
            //sw.Close();
            //sw.Dispose();
            FileStream fs = new FileStream(filePath, FileMode.Create);
            fs.Close();
        }