C# 将字符串转换为二进制零和一
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Convert string to binary zeros and ones
提问by Kyara Programmer
I want to convert string to binary and I tried this code
我想将字符串转换为二进制，我试过这段代码
byte[] arr = System.Text.Encoding.ASCII.GetBytes(aa[i]);
and this
和这个
System.Text.ASCIIEncoding encoding = new System.Text.ASCIIEncoding();
byte[] arr= encoding.GetBytes(aa[i]);
but it returned numbers not binary say If I write 'm' it convert it to "0109" and I want to convert to zeros & Ones only Thanks in advance
但它返回的数字不是二进制说如果我写 'm' 它将它转换为“0109”，我只想转换为 0 和 1 提前致谢
采纳答案by mitja.gti
Here is an example:
下面是一个例子：
foreach (char c in "Test")
Console.WriteLine(Convert.ToString(c, 2).PadLeft(8, '0'));
回答by cat_minhv0
You could use : Convert.ToByte(string value, int fromBase)
您可以使用：Convert.ToByte(string value, int fromBase)
According to MSDN :
根据 MSDN ：
fromBase Type: System.Int32 The base of the number in value, which must be 2, 8, 10, or 16.
fromBase 类型：System.Int32 value 中数字的基数，必须是 2、8、10 或 16。
For more detail, see this link : Convert.ToByte()
有关更多详细信息，请参阅此链接：Convert.ToByte()
回答by LemonCool
I'm not sure I completely understand your question, but if you want to convert text to binary this is how it is done:
我不确定我是否完全理解你的问题，但如果你想将文本转换为二进制，这是如何完成的：
public byte[] ToBinary(string stringPassed)
{
System.Text.ASCIIEncoding encoding = new System.Text.ASCIIEncoding();
return encoding.GetBytes(stringPassed);
}
You need to pass the whole string, not the characters in the string.
您需要传递整个字符串，而不是字符串中的字符。
回答by weston
So you can get to bytes, now you want to output 0s and 1s.
所以你可以得到字节，现在你想输出 0 和 1。
For a single byte b
对于单 byte b
var sb = new StringBuilder();
for(var i=7;i>=0;i--)
{
sb.Append((b & (1<<i))==0?'0':'1');
}
回答by Nicholas Carey
Something like this ought to do you;
你应该这样做；
static string bytes2bin( byte[] bytes )
{
StringBuilder buffer = new StringBuilder(bytes.Length*8) ;
foreach ( byte b in bytes )
{
buffer.Append(lookup[b]) ;
}
string binary = buffer.ToString() ;
return binary ;
}
static readonly string[] lookup = InitLookup() ;
private static string[] InitLookup()
{
string[] instance = new string[1+byte.MaxValue] ;
StringBuilder buffer = new StringBuilder("00000000") ;
for ( int i = 0 ; i < instance.Length ; ++i )
{
buffer[0] = (char)( '0' + ((i>>7)&1) ) ;
buffer[1] = (char)( '0' + ((i>>6)&1) ) ;
buffer[2] = (char)( '0' + ((i>>5)&1) ) ;
buffer[3] = (char)( '0' + ((i>>4)&1) ) ;
buffer[4] = (char)( '0' + ((i>>3)&1) ) ;
buffer[5] = (char)( '0' + ((i>>2)&1) ) ;
buffer[6] = (char)( '0' + ((i>>1)&1) ) ;
buffer[7] = (char)( '0' + ((i>>0)&1) ) ;
instance[i] = buffer.ToString() ;
}
return instance ;
}
