ListView::SelectedListViewItemCollection Class
Represents the collection of selected items in a list view control.
Assembly: System.Windows.Forms (in System.Windows.Forms.dll)
| Name | Description | |
|---|---|---|
![]() | ListView::SelectedListViewItemCollection(ListView^) | Initializes a new instance of the ListView::SelectedListViewItemCollection class. |
| Name | Description | |
|---|---|---|
![]() | Count | Gets the number of items in the collection. |
![]() | IsReadOnly | Gets a value indicating whether the collection is read-only. |
![]() | Item[Int32] | Gets the item at the specified index within the collection. |
![]() | Item[String^] | Gets an item with the specified key from the collection. |
| Name | Description | |
|---|---|---|
![]() | Clear() | Removes all items from the collection. |
![]() | Contains(ListViewItem^) | Determines whether the specified item is located in the collection. |
![]() | ContainsKey(String^) | Determines whether an item with the specified key is contained in the collection. |
![]() | CopyTo(Array^, Int32) | Copies the entire collection into an existing array at a specified location within the array. |
![]() | Equals(Object^) | Determines whether the specified object is equal to the current object.(Inherited from Object.) |
![]() | Finalize() | Allows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection.(Inherited from Object.) |
![]() | GetEnumerator() | Returns an enumerator that can be used to iterate through the selected item collection. |
![]() | GetHashCode() | Serves as the default hash function. (Inherited from Object.) |
![]() | GetType() | |
![]() | IndexOf(ListViewItem^) | Returns the index within the collection of the specified item. |
![]() | IndexOfKey(String^) | Returns the index of the first occurrence of the item with the specified key. |
![]() | MemberwiseClone() | |
![]() | ToString() | Returns a string that represents the current object.(Inherited from Object.) |
| Name | Description | |
|---|---|---|
![]() ![]() | IList::Add(Object^) | This API supports the product infrastructure and is not intended to be used directly from your code. Adds an item to the collection. |
![]() ![]() | IList::Contains(Object^) | This API supports the product infrastructure and is not intended to be used directly from your code. Determines whether the specified item is located in the collection. |
![]() ![]() | IList::IndexOf(Object^) | This API supports the product infrastructure and is not intended to be used directly from your code. Returns the index, within the collection, of the specified item. |
![]() ![]() | IList::Insert(Int32, Object^) | This API supports the product infrastructure and is not intended to be used directly from your code. Inserts an item into the collection at a specified index. |
![]() ![]() | IList::Remove(Object^) | This API supports the product infrastructure and is not intended to be used directly from your code. Removes the first occurrence of a specified item from the collection. |
![]() ![]() | IList::RemoveAt(Int32) | This API supports the product infrastructure and is not intended to be used directly from your code. Removes an item from the collection at a specified index. |
![]() ![]() | ICollection::IsSynchronized | This API supports the product infrastructure and is not intended to be used directly from your code. Gets a value indicating whether access to the collection is synchronized (thread safe). |
![]() ![]() | ICollection::SyncRoot | This API supports the product infrastructure and is not intended to be used directly from your code. Gets an object that can be used to synchronize access to the collection of controls. |
![]() ![]() | IList::IsFixedSize | This API supports the product infrastructure and is not intended to be used directly from your code. Gets a value indicating whether the collection has a fixed size. |
![]() ![]() | IList::Item[Int32] | This API supports the product infrastructure and is not intended to be used directly from your code. Gets or sets an an object from the collection. |
| Name | Description | |
|---|---|---|
![]() | AsParallel() | Overloaded. Enables parallelization of a query.(Defined by ParallelEnumerable.) |
![]() | AsQueryable() | Overloaded. Converts an IEnumerable to an IQueryable.(Defined by Queryable.) |
![]() | Cast<TResult>() | Casts the elements of an IEnumerable to the specified type.(Defined by Enumerable.) |
![]() | OfType<TResult>() | Filters the elements of an IEnumerable based on a specified type.(Defined by Enumerable.) |
A ListView::SelectedListViewItemCollection stores the selected items in a ListView control. The items stored in the ListView::SelectedListViewItemCollection are items contained in the ListView::ListViewItemCollection. The ListView::ListViewItemCollection stores all items displayed in the ListView.
The following table shows an example of how the ListView::ListViewItemCollection stores the items of the ListView as well as their selection states in an example ListView control.
Index | Item | Selection state in the ListView |
|---|---|---|
0 | Item1 | Unselected |
1 | Item2 | Selected |
2 | Item3 | Unselected |
3 | Item4 | Selected |
4 | Item5 | Selected |
Based on the ListView::ListViewItemCollection example in the previous table, the following table demonstrates how the ListView::SelectedListViewItemCollection would appear.
Index | Selected item in the ListViewItemCollection |
|---|---|
0 | Item2 |
1 | Item4 |
2 | Item5 |
You can use the properties and methods of this class to perform a variety of tasks with the collection. The Contains method enables you to determine whether an item from the ListView::ListViewItemCollection class is a member of the ListView::SelectedListViewItemCollection. Once you know that the item is in the collection, you can use the IndexOf method to determine the position of the item in the ListView::SelectedListViewItemCollection.
The following code example demonstrates using the SelectedItems, SelectedIndexChanged event, and HeaderStyle members and the ListView::SelectedListViewItemCollection class. To run this example, paste the following code in a form that contains a ListView object named ListView1 and a TextBox named TextBox1. Call the InitializeListView method from the form's constructor or the Load event handler. This example requires that the event handler is correctly associated with the SelectedIndexChanged event
// This method adds two columns to the ListView, setting the Text // and TextAlign, and Width properties of each ColumnHeader. The // HeaderStyle property is set to NonClickable since the ColumnClick // event is not handled. Finally the method adds ListViewItems and // SubItems to each column. void InitializeListView() { this->ListView1 = gcnew System::Windows::Forms::ListView; this->ListView1->BackColor = System::Drawing::SystemColors::Control; this->ListView1->Dock = System::Windows::Forms::DockStyle::Top; this->ListView1->Location = System::Drawing::Point( 0, 0 ); this->ListView1->Name = "ListView1"; this->ListView1->Size = System::Drawing::Size( 292, 130 ); this->ListView1->TabIndex = 0; this->ListView1->View = System::Windows::Forms::View::Details; this->ListView1->MultiSelect = true; this->ListView1->HideSelection = false; this->ListView1->HeaderStyle = ColumnHeaderStyle::Nonclickable; ColumnHeader^ columnHeader1 = gcnew ColumnHeader; columnHeader1->Text = "Breakfast Item"; columnHeader1->TextAlign = HorizontalAlignment::Left; columnHeader1->Width = 146; ColumnHeader^ columnHeader2 = gcnew ColumnHeader; columnHeader2->Text = "Price Each"; columnHeader2->TextAlign = HorizontalAlignment::Center; columnHeader2->Width = 142; this->ListView1->Columns->Add( columnHeader1 ); this->ListView1->Columns->Add( columnHeader2 ); array<String^>^foodList = {"Juice","Coffee","Cereal & Milk","Fruit Plate","Toast & Jelly","Bagel & Cream Cheese"}; array<String^>^foodPrice = {"1.09","1.09","2.19","2.49","1.49","1.49"}; for ( int count = 0; count < foodList->Length; count++ ) { ListViewItem^ listItem = gcnew ListViewItem( foodList[ count ] ); listItem->SubItems->Add( foodPrice[ count ] ); ListView1->Items->Add( listItem ); } this->Controls->Add( ListView1 ); }
// Uses the SelectedItems property to retrieve and tally the price // of the selected menu items. void ListView1_SelectedIndexChanged_UsingItems( Object^ /*sender*/, System::EventArgs^ /*e*/ ) { ListView::SelectedListViewItemCollection^ breakfast = this->ListView1->SelectedItems; double price = 0.0; System::Collections::IEnumerator^ myEnum = breakfast->GetEnumerator(); while ( myEnum->MoveNext() ) { ListViewItem^ item = safe_cast<ListViewItem^>(myEnum->Current); price += Double::Parse( item->SubItems[ 1 ]->Text ); } // Output the price to TextBox1. TextBox1->Text = price.ToString(); }
Available since 1.1
Any public static ( Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.





