ArrayList::Add Method (Object^)
.NET Framework (current version)
Adds an object to the end of the ArrayList.
Assembly: mscorlib (in mscorlib.dll)
Parameters
- value
-
Type:
System::Object^
The Object to be added to the end of the ArrayList. The value can be null.
Implements
IList::Add(Object^)| Exception | Condition |
|---|---|
| NotSupportedException |
ArrayList accepts null as a valid value and allows duplicate elements.
If Count already equals Capacity, the capacity of the ArrayList is increased by automatically reallocating the internal array, and the existing elements are copied to the new array before the new element is added.
If Count is less than Capacity, this method is an O(1) operation. If the capacity needs to be increased to accommodate the new element, this method becomes an O(n) operation, where n is Count.
The following code example shows how to add elements to the ArrayList.
using namespace System; using namespace System::Collections; void PrintValues( IEnumerable^ myList, char mySeparator ); int main() { // Creates and initializes a new ArrayList. ArrayList^ myAL = gcnew ArrayList; myAL->Add( "The" ); myAL->Add( "quick" ); myAL->Add( "brown" ); myAL->Add( "fox" ); // Creates and initializes a new Queue. Queue^ myQueue = gcnew Queue; myQueue->Enqueue( "jumped" ); myQueue->Enqueue( "over" ); myQueue->Enqueue( "the" ); myQueue->Enqueue( "lazy" ); myQueue->Enqueue( "dog" ); // Displays the ArrayList and the Queue. Console::WriteLine( "The ArrayList initially contains the following:" ); PrintValues( myAL, '\t' ); Console::WriteLine( "The Queue initially contains the following:" ); PrintValues( myQueue, '\t' ); // Copies the Queue elements to the end of the ArrayList. myAL->AddRange( myQueue ); // Displays the ArrayList. Console::WriteLine( "The ArrayList now contains the following:" ); PrintValues( myAL, '\t' ); } void PrintValues( IEnumerable^ myList, char mySeparator ) { IEnumerator^ myEnum = myList->GetEnumerator(); while ( myEnum->MoveNext() ) { Object^ obj = safe_cast<Object^>(myEnum->Current); Console::Write( "{0}{1}", mySeparator, obj ); } Console::WriteLine(); } /* This code produces the following output. The ArrayList initially contains the following: The quick brown fox The Queue initially contains the following: jumped over the lazy dog The ArrayList now contains the following: The quick brown fox jumped over the lazy dog */
Universal Windows Platform
Available since 10
.NET Framework
Available since 1.1
Available since 10
.NET Framework
Available since 1.1
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