BitArray::SetAll Method (Boolean)

 

Sets all bits in the BitArray to the specified value.

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

public:
void SetAll(
	bool value
)

Parameters

value
Type: System::Boolean

The Boolean value to assign to all bits.

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

The following code example shows how to set and get specific elements in a BitArray.

using namespace System;
using namespace System::Collections;
void PrintIndexAndValues( IEnumerable^ myCol );
int main()
{

   // Creates and initializes a BitArray.
   BitArray^ myBA = gcnew BitArray( 5 );

   // Displays the properties and values of the BitArray.
   Console::WriteLine( "myBA values:" );
   PrintIndexAndValues( myBA );

   // Sets all the elements to true.
   myBA->SetAll( true );

   // Displays the properties and values of the BitArray.
   Console::WriteLine( "After setting all elements to true," );
   PrintIndexAndValues( myBA );

   // Sets the last index to false.
   myBA->Set( myBA->Count - 1, false );

   // Displays the properties and values of the BitArray.
   Console::WriteLine( "After setting the last element to false," );
   PrintIndexAndValues( myBA );

   // Gets the value of the last two elements.
   Console::WriteLine( "The last two elements are: " );
   Console::WriteLine( "    at index {0} : {1}", myBA->Count - 2, myBA->Get( myBA->Count - 2 ) );
   Console::WriteLine( "    at index {0} : {1}", myBA->Count - 1, myBA->Get( myBA->Count - 1 ) );
}

void PrintIndexAndValues( IEnumerable^ myCol )
{
   int i = 0;
   IEnumerator^ myEnum = myCol->GetEnumerator();
   while ( myEnum->MoveNext() )
   {
      Object^ obj = safe_cast<Object^>(myEnum->Current);
      Console::WriteLine( "    [{0}]:    {1}", i++, obj );
   }

   Console::WriteLine();
}

/* 
 This code produces the following output.

 myBA values:
     [0]:    False
     [1]:    False
     [2]:    False
     [3]:    False
     [4]:    False

 After setting all elements to true,
     [0]:    True
     [1]:    True
     [2]:    True
     [3]:    True
     [4]:    True

 After setting the last element to false,
     [0]:    True
     [1]:    True
     [2]:    True
     [3]:    True
     [4]:    False

 The last two elements are:
     at index 3 : True
     at index 4 : False

 */

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
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