BitArray::And Method (BitArray^)

 
System_CAPS_noteNote

The .NET API Reference documentation has a new home. Visit the .NET API Browser on docs.microsoft.com to see the new experience.

Performs the bitwise AND operation between the elements of the current BitArray object and the corresponding elements in the specified array. The current BitArray object will be modified to store the result of the bitwise AND operation.

Namespace:   System.Collections
Assembly:  mscorlib (in mscorlib.dll)

public:
BitArray^ And(
	BitArray^ value
)

Parameters

value
Type: System.Collections::BitArray^

The array with which to perform the bitwise AND operation.

Return Value

Type: System.Collections::BitArray^

An array containing the result of the bitwise AND operation, which is a reference to the current BitArray object.

Exception Condition
ArgumentNullException

value is null.

ArgumentException

value and the current BitArray do not have the same number of elements.

The bitwise AND operation returns true if both operands are true, and returns false if one or both operands are false.

This method is an O(n) operation, where n is Count.

The following code example shows how to perform the bitwise AND operation between two BitArray objects.

using namespace System;
using namespace System::Collections;
void PrintValues( IEnumerable^ myList, int myWidth );
int main()
{

   // Creates and initializes two BitArrays of the same size.
   BitArray^ myBA1 = gcnew BitArray( 4 );
   BitArray^ myBA2 = gcnew BitArray( 4 );
   myBA1[ 0 ] = false;
   myBA1[ 1 ] = false;
   myBA1[ 2 ] = true;
   myBA1[ 3 ] = true;
   myBA2[ 0 ] = false;
   myBA2[ 2 ] = false;
   myBA2[ 1 ] = true;
   myBA2[ 3 ] = true;

   // Performs a bitwise AND operation between BitArray instances of the same size.
   Console::WriteLine( "Initial values" );
   Console::Write( "myBA1:" );
   PrintValues( myBA1, 8 );
   Console::Write( "myBA2:" );
   PrintValues( myBA2, 8 );
   Console::WriteLine();
   Console::WriteLine( "Result" );
   Console::Write( "AND:" );
   PrintValues( myBA1->And( myBA2 ), 8 );
   Console::WriteLine();
   Console::WriteLine( "After AND" );
   Console::Write( "myBA1:" );
   PrintValues( myBA1, 8 );
   Console::Write( "myBA2:" );
   PrintValues( myBA2, 8 );
   Console::WriteLine();

   // Performing AND between BitArray instances of different sizes returns an exception.
   try
   {
      BitArray^ myBA3 = gcnew BitArray( 8 );
      myBA3[ 0 ] = false;
      myBA3[ 1 ] = false;
      myBA3[ 2 ] = false;
      myBA3[ 3 ] = false;
      myBA3[ 4 ] = true;
      myBA3[ 5 ] = true;
      myBA3[ 6 ] = true;
      myBA3[ 7 ] = true;
      myBA1->And( myBA3 );
   }
   catch ( Exception^ myException ) 
   {
      Console::WriteLine( "Exception: {0}", myException );
   }

}

void PrintValues( IEnumerable^ myList, int myWidth )
{
   int i = myWidth;
   IEnumerator^ myEnum = myList->GetEnumerator();
   while ( myEnum->MoveNext() )
   {
      Object^ obj = safe_cast<Object^>(myEnum->Current);
      if ( i <= 0 )
      {
         i = myWidth;
         Console::WriteLine();
      }

      i--;
      Console::Write( "{0,8}", obj );
   }

   Console::WriteLine();
}

/* 
 This code produces the following output.

 Initial values
 myBA1:   False   False    True    True
 myBA2:   False    True   False    True

 Result
 AND:   False   False   False    True

 After AND
 myBA1:   False   False   False    True
 myBA2:   False    True   False    True

 Exception: System.ArgumentException: Array lengths must be the same.
    at System.Collections.BitArray.And(BitArray value)
    at SamplesBitArray.Main()
 */

Universal Windows Platform
Available since 8
.NET Framework
Available since 1.1
Portable Class Library
Supported in: portable .NET platforms
Silverlight
Available since 2.0
Windows Phone Silverlight
Available since 7.0
Windows Phone
Available since 8.1
Return to top
Show: