ArrayList::GetRange Method
Namespace: System.Collections
Assembly: mscorlib (in mscorlib.dll)
Parameters
- index
- Type: System::Int32
The zero-based ArrayList index at which the range starts.
- count
- Type: System::Int32
The number of elements in the range.
Return Value
Type: System.Collections::ArrayListAn ArrayList which represents a subset of the elements in the source ArrayList.
| Exception | Condition |
|---|---|
| ArgumentOutOfRangeException | index is less than zero. -or- count is less than zero. |
| ArgumentException | index and count do not denote a valid range of elements in the ArrayList. |
This method does not create copies of the elements. The new ArrayList is only a view window into the source ArrayList. However, all subsequent changes to the source ArrayList must be done through this view window ArrayList. If changes are made directly to the source ArrayList, the view window ArrayList is invalidated and any operations on it will return an InvalidOperationException.
This method is an O(1) operation.
The following code example shows how to set and get a range of elements in 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" ); myAL->Add( "jumped" ); myAL->Add( "over" ); myAL->Add( "the" ); myAL->Add( "lazy" ); myAL->Add( "dog" ); // Creates and initializes the source ICollection. Queue^ mySourceList = gcnew Queue; mySourceList->Enqueue( "big" ); mySourceList->Enqueue( "gray" ); mySourceList->Enqueue( "wolf" ); // Displays the values of five elements starting at index 0. ArrayList^ mySubAL = myAL->GetRange( 0, 5 ); Console::WriteLine( "Index 0 through 4 contains:" ); PrintValues( mySubAL, '\t' ); // Replaces the values of five elements starting at index 1 with the values in the ICollection. myAL->SetRange( 1, mySourceList ); // Displays the values of five elements starting at index 0. mySubAL = myAL->GetRange( 0, 5 ); Console::WriteLine( "Index 0 through 4 now contains:" ); PrintValues( mySubAL, '\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. Index 0 through 4 contains: The quick brown fox jumped Index 0 through 4 now contains: The big gray wolf jumped */
Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2
The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.