C＃解碼（轉換器）

Question

我有一個長碼，如02 10 18 14 cb f5 50 d3 14 00 0d 00 09 00 05 00 04 7b 28 00 00 00 00 28 cb。

我要00 09

解碼到它的價值等於其2.25 我寫了這個程序，但是當我有一個包含00 1E，而不是00 09的另一個代碼出現問題。

00 09必須轉換爲0000 0000 0000 1001然後最後兩位應該倍數爲0.25，其餘必須倍數爲1才能達到2.25 如何更改我的程序以識別十六進制值，如00 1E？

 double q=0.0,w=0.0,x,y; 
     char []chrxB1=new char [4]; 
     char[] chrxB2 = new char[4]; 
     char[] chrxB3 = new char[4]; 
     char[] chrxB4 = new char[4]; 
     char []sn=new char [74]; 
     string ss, xB1, xB2, xB3, xB4, yB1, yB2, yB3, yB4; 

     ss = textBox1.Text; 
     xB1 = ss[37].ToString(); 
     xB2 = ss[36].ToString(); 
     xB3 = ss[34].ToString(); 
     xB4 = ss[33].ToString(); 

     yB1 = ss[43].ToString(); 
     yB2 = ss[42].ToString(); 
     yB3 = ss[40].ToString(); 
     yB4 = ss[39].ToString(); 

     string b1 = Convert.ToString(int.Parse(xB1), 2); 
     chrxB1= b1.ToArray(); 
     if (chrxB1.Length!=0) 
      for (int i = 0; i < chrxB1.Length; i++) 
      { 
       if (i == 0) 
        q=(int.Parse(chrxB1[i].ToString()) * (1)); 
       else if (i == 1) 
        q = q + (int.Parse(chrxB1[i].ToString()) * (2)); 
       else if (i == 2) 
        w = int.Parse(chrxB1[i].ToString()) * (1); 
       else 
        w = w + (int.Parse(chrxB1[i].ToString()) * (2)); 
      } 
     q=q*0.25; 
     string b2 = Convert.ToString(int.Parse(xB2), 2); 
     chrxB2 = b2.ToArray(); 
     if (chrxB2.Length != 0) 
      for (int i = 0; i < chrxB2.Length; i++) 
      { 
       if (i == 0) 
        w = w + (int.Parse(chrxB2[i].ToString()) * (4)); 
       else if (i == 1) 
        w = w + (int.Parse(chrxB2[i].ToString()) * (8)); 
       else if (i == 2) 
        w = int.Parse(chrxB2[i].ToString()) * (16); 
       else 
        w = w + (int.Parse(chrxB2[i].ToString()) * (32)); 
      } 
     string b3 = Convert.ToString(int.Parse(xB3), 2); 
     chrxB3 = b3.ToArray(); 
     if (chrxB3.Length != 0) 
      for (int i = 0; i < chrxB3.Length; i++) 
      { 
       if (i == 0) 
        w = w + (int.Parse(chrxB3[i].ToString()) * (64)); 
       else if (i == 1) 
        w = w + (int.Parse(chrxB3[i].ToString()) * (128)); 
       else if (i == 2) 
        w = int.Parse(chrxB3[i].ToString()) * (256); 
       else 
        w = w + (int.Parse(chrxB3[i].ToString()) * (512)); 
      } 
     string b4 = Convert.ToString(int.Parse(xB4), 2); 
     chrxB4 = b4.ToArray(); 
     if (chrxB4.Length != 0) 
      for (int i = 0; i < chrxB4.Length; i++) 
      { 
       if (i == 0) 
        w=w+(int.Parse(chrxB4[i].ToString()) * (1024)); 
       else if (i == 1) 
        w = w + (int.Parse(chrxB4[i].ToString()) * (2048)); 
       else if (i == 2) 
        w = int.Parse(chrxB4[i].ToString()) * (4096); 
       else 
        w = w + (int.Parse(chrxB4[i].ToString()) * (8192)); 
      } 
     x = w + q; 
     textBox2.Text = x.ToString(); 
    } 
} 

Answer 1

如果你問

「Q：我如何分析在C＃中的十六進制字符串？」

，得到的答覆是：

int.Parse(hexValue, System.Globalization.NumberStyles.HexNumber);

• http://msdn.microsoft.com/en-us/library/system.globalization.numberstyles.aspx

• http://msdn.microsoft.com/en-us/library/bb311038.aspx

Answer 2

我會跟你說實話 - 我不是10 0％確定你在問什麼。但是，我相信你問的是如何轉換一個字符串表示一個基於16的整數。

var num = Int32.Parse("001e", NumberStyles.HexNumber); 

NumberStyles是System.Globalization，所以一定要包括或完全限定它。