BitArray Class
Manages a compact array of bit values, which are represented as Booleans, where true indicates that the bit is on (1) and false indicates the bit is off (0).
Assembly: mscorlib (in mscorlib.dll)
The size of a BitArray is controlled by the client; indexing past the end of the BitArray throws an ArgumentException.
Elements in this collection can be accessed using an integer index. Indexes in this collection are zero-based.
The following code example shows how to create and initialize a BitArray and how to print out its values.
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 */
Public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.
This implementation does not provide a synchronized (thread safe) wrapper for a BitArray.
Enumerating through a collection is intrinsically not a thread-safe procedure. Even when a collection is synchronized, other threads can still modify the collection, which causes the enumerator to throw an exception. To guarantee thread safety during enumeration, you can either lock the collection during the entire enumeration or catch the exceptions resulting from changes made by other threads.
Windows 7, Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98, Windows CE, Windows Mobile for Smartphone, Windows Mobile for Pocket PC, Xbox 360, Zune
The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.