如何将string表示的16十六进制数字转换成其所代表的二进制数据

[Faitle]

比如
string = "A0 CC 10 1A";
转换成
1010 0000 .......
这样的二进制？
急
谢谢

[Faitle]

        public static byte[] StringToBinaries( string str ) {
            str = str.Replace(" ", "");
            byte[] binaries = new byte[str.Length / 2];
            for (int i = 0; i < str.Length; ) {
                byte b = ( byte )"0123456789ABCDEF".IndexOf( str[i++] );
                b <<= 4;
                b += (byte)"0123456789ABCDEF".IndexOf(str[i]);
                binaries[ i / 2 ] = b;
                i++;
            }
            return binaries;
        }

我的意思是将一连串不定长的字符转换成binaries
这是我后来写的

[yhy0611]

学习了

[王集鹄]

楼主你没考虑小写abcde的问题。。。
如下代码基本一样，不过用得是标准的TryParse()转换

public byte[] HexToBytes(string AHex)
{
    AHex = AHex.Replace(" ", "");
    if (AHex.Length <= 0) return null;
    byte[] Result = new byte[AHex.Length / 2];
    for (int i = 0; i < AHex.Length; i += 2)
        if (!byte.TryParse(AHex.Substring(i, 2), 
            System.Globalization.NumberStyles.HexNumber, null, out Result[i / 2]))
            Result[i / 2] = 0;
    return Result;
}

[wsfl1]

支持3楼啊

[ericzhangbo1982111]

这个函数负责将字符转换成十六进制

public string Data_Hex_Asc(ref string Data)

{

string Data1 = "";

string sData = "";

while (Data.Length > 0)

//first take two hex value using substring.

//then convert Hex value into ascii.

//then convert ascii value into character.

{
Data1 = System.Convert.ToChar(System.Convert.ToUInt32(Data.Substring(0, 2), 16)).ToString();

sData = sData + Data1;

Data = Data.Substring(2, Data.Length - 2);

}
return sData;
}



Data_Asc_Hex(data)





这个函数负责将十六进制转换成字符

public string Data_Asc_Hex(ref string Data)
{
//first take each charcter using substring.
//then convert character into ascii.
//then convert ascii value into Hex Format
string sValue;
string sHex = "";
while (Data.Length > 0)
{
sValue = Conversion.Hex(Strings.Asc(Data.Substring(0, 1).ToString()));
Data = Data.Substring(1, Data.Length - 1);
sHex = sHex + sValue;
}
return sHex;
}

[lake_cx]

            string s = "A0 CC 10 1A";
            s = s.Replace(" ", "");
            int n = int.Parse(s, NumberStyles.HexNumber);
            MessageBox.Show(Convert.ToString(n, 2));

[h_w_king]

string ss=Convert.ToString((Convert.ToInt32("aa", 16)), 2));

[王集鹄]

参考如下代码：

private string HexToBin(string AHex)
{
    AHex = AHex.ToLower().Replace(" ", "");
    StringBuilder result = new StringBuilder(AHex.Length * 4);
    foreach (char c in AHex)
    {
        int i = "0123456789abcdef".IndexOf(c);
        if (i >= 0)
        {
            string s = Convert.ToString(i, 2);
            result.Append(" 000".Substring(0, 5 - s.Length) + s);
        }
    }
    return result.ToString().Trim();
}

private void button2_Click(object sender, EventArgs e)
{
    string s = "A0 CC 10 1A";
    MessageBox.Show(HexToBin(s));
}

[viena]

每次两位截取字符串，转换即可

[Faitle]

先谢谢各位了
刚开始用c sharp

待会有空了给分 :)