字节数组作为C#中的位域？

Question

.NET中是否有内置类或某些东西可以将字节数组视为大位域？

Answer 1

看看BitArray类.

下面是一个示例,说明使用字节数组时发生的情况:

byte[] myBytes = new byte[5] { 1, 2, 3, 4, 5 };
BitArray myBA3 = new BitArray( myBytes );

Console.WriteLine( "myBA3" );
Console.WriteLine( "   Count:    {0}", myBA3.Count );
Console.WriteLine( "   Length:   {0}", myBA3.Length );
Console.WriteLine( "   Values:" );
PrintValues( myBA3, 8 );

public static void PrintValues( IEnumerable myList, int myWidth )
{
   int i = myWidth;
   foreach ( Object obj in myList )
   {
      if ( i <= 0 )
      {
         i = myWidth;
         Console.WriteLine();
      }
      i--;
      Console.Write( "{0,8}", obj );
   }
   Console.WriteLine();
}

此代码生成以下输出.

 myBA3
    Count:    40
    Length:   40
    Values:
     Bit0   Bit1    Bit2    Bit3    Bit4    Bit5    Bit6    Bit7
     True   False   False   False   False   False   False   False
     Bit8   Bit9    Bit10   Bit11   Bit12   Bit13   Bit14   Bit15 ... and so on
    False    True   False   False   False   False   False   False
     True    True   False   False   False   False   False   False
    False   False    True   False   False   False   False   False
     True   False    True   False   False   False   False   False