BitArray GIS

 using System;
 using System.Collections;
 public class SamplesBitArray  {

    public static void Main()  {

       // Creates and initializes several BitArrays.
       BitArray myBA1 = new BitArray( 5 );

       BitArray myBA2 = new BitArray( 5, false );

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

       bool[] myBools = new bool[5] { true, false, true, true, false };
       BitArray myBA4 = new BitArray( myBools );

       int[]  myInts  = new int[5] { 6, 7, 8, 9, 10 };
       BitArray myBA5 = new BitArray( myInts );

       // Displays the properties and values of the BitArrays.
       Console.WriteLine( "myBA1" );
       Console.WriteLine( "   Count:    {0}", myBA1.Count );
       Console.WriteLine( "   Length:   {0}", myBA1.Length );
       Console.WriteLine( "   Values:" );
       PrintValues( myBA1, 8 );

       Console.WriteLine( "myBA2" );
       Console.WriteLine( "   Count:    {0}", myBA2.Count );
       Console.WriteLine( "   Length:   {0}", myBA2.Length );
       Console.WriteLine( "   Values:" );
       PrintValues( myBA2, 8 );

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

       Console.WriteLine( "myBA4" );
       Console.WriteLine( "   Count:    {0}", myBA4.Count );
       Console.WriteLine( "   Length:   {0}", myBA4.Length );
       Console.WriteLine( "   Values:" );
       PrintValues( myBA4, 8 );

       Console.WriteLine( "myBA5" );
       Console.WriteLine( "   Count:    {0}", myBA5.Count );
       Console.WriteLine( "   Length:   {0}", myBA5.Length );
       Console.WriteLine( "   Values:" );
       PrintValues( myBA5, 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();
    }

 }


 /* 
 This code produces the following output.

 myBA1
    Count:    5
    Length:   5
    Values:
    False   False   False   False   False
 myBA2
    Count:    5
    Length:   5
    Values:
    False   False   False   False   False
 myBA3
    Count:    40
    Length:   40
    Values:
     True   False   False   False   False   False   False   False
    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
 myBA4
    Count:    5
    Length:   5
    Values:
     True   False    True    True   False
 myBA5
    Count:    160
    Length:   160
    Values:
    False    True    True   False   False   False   False   False
    False   False   False   False   False   False   False   False
    False   False   False   False   False   False   False   False
    False   False   False   False   False   False   False   False
     True    True    True   False   False   False   False   False
    False   False   False   False   False   False   False   False
    False   False   False   False   False   False   False   False
    False   False   False   False   False   False   False   False
    False   False   False    True   False   False   False   False
    False   False   False   False   False   False   False   False
    False   False   False   False   False   False   False   False
    False   False   False   False   False   False   False   False
     True   False   False    True   False   False   False   False
    False   False   False   False   False   False   False   False
    False   False   False   False   False   False   False   False
    False   False   False   False   False   False   False   False
    False    True   False    True   False   False   False   False
    False   False   False   False   False   False   False   False
    False   False   False   False   False   False   False   False
    False   False   False   False   False   False   False   False
 */ 

一个int 是32 位的 ，i1byte 是 8位， int 是两个字节 ，4个byte