StringCollection::RemoveAt Method (Int32)
.NET Framework (current version)
Removes the string at the specified index of the StringCollection.
Assembly: System (in System.dll)
Parameters
- index
-
Type:
System::Int32
The zero-based index of the string to remove.
Implements
IList::RemoveAt(Int32)| Exception | Condition |
|---|---|
| ArgumentOutOfRangeException |
In collections of contiguous elements, such as lists, the elements that follow the removed element move up to occupy the vacated spot. If the collection is indexed, the indexes of the elements that are moved are also updated. This behavior does not apply to collections where elements are conceptually grouped into buckets, such as a hash table.
This method is an O(n) operation, where n is Count.
The following code example removes elements from the StringCollection.
#using <System.dll> using namespace System; using namespace System::Collections; using namespace System::Collections::Specialized; void PrintValues( IEnumerable^ myCol ); int main() { // Creates and initializes a new StringCollection. StringCollection^ myCol = gcnew StringCollection; array<String^>^myArr = {"RED","orange","yellow","RED","green","blue","RED","indigo","violet","RED"}; myCol->AddRange( myArr ); Console::WriteLine( "Initial contents of the StringCollection:" ); PrintValues( myCol ); // Removes one element from the StringCollection. myCol->Remove( "yellow" ); Console::WriteLine( "After removing \"yellow\":" ); PrintValues( myCol ); // Removes all occurrences of a value from the StringCollection. int i = myCol->IndexOf( "RED" ); while ( i > -1 ) { myCol->RemoveAt( i ); i = myCol->IndexOf( "RED" ); } Console::WriteLine( "After removing all occurrences of \"RED\":" ); PrintValues( myCol ); // Clears the entire collection. myCol->Clear(); Console::WriteLine( "After clearing the collection:" ); PrintValues( myCol ); } void PrintValues( IEnumerable^ myCol ) { IEnumerator^ myEnum = myCol->GetEnumerator(); while ( myEnum->MoveNext() ) { Object^ obj = safe_cast<Object^>(myEnum->Current); Console::WriteLine( " {0}", obj ); } Console::WriteLine(); } /* This code produces the following output. Initial contents of the StringCollection: RED orange yellow RED green blue RED indigo violet RED After removing "yellow": RED orange RED green blue RED indigo violet RED After removing all occurrences of "RED": orange green blue indigo violet After clearing the collection: */
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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