ListBox::SelectedObjectCollection Class
Represents the collection of selected items in the ListBox.
Assembly: System.Windows.Forms (in System.Windows.Forms.dll)
| Name | Description | |
|---|---|---|
![]() | ListBox::SelectedObjectCollection(ListBox^) | Initializes a new instance of the ListBox::SelectedObjectCollection 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. |
| Name | Description | |
|---|---|---|
![]() | Add(Object^) | Adds an item to the list of selected items for a ListBox. |
![]() | Clear() | Removes all items from the collection of selected items. |
![]() | Contains(Object^) | Determines whether the specified item is located within 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(Object^) | Returns the index within the collection of the specified item. |
![]() | MemberwiseClone() | |
![]() | Remove(Object^) | Removes the specified object from the collection of selected items. |
![]() | 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. For a description of this member, see IList::Add. |
![]() ![]() | IList::Clear() | This API supports the product infrastructure and is not intended to be used directly from your code. For a description of this member, see IList::Clear. |
![]() ![]() | IList::Insert(Int32, Object^) | This API supports the product infrastructure and is not intended to be used directly from your code. For a description of this member, see IList::Insert. |
![]() ![]() | IList::Remove(Object^) | This API supports the product infrastructure and is not intended to be used directly from your code. For a description of this member, see IList::Remove. |
![]() ![]() | IList::RemoveAt(Int32) | This API supports the product infrastructure and is not intended to be used directly from your code. For a description of this member, see IList::RemoveAt. |
![]() ![]() | ICollection::IsSynchronized | This API supports the product infrastructure and is not intended to be used directly from your code. For a description of this member, see ICollection::IsSynchronized. |
![]() ![]() | ICollection::SyncRoot | This API supports the product infrastructure and is not intended to be used directly from your code. For a description of this member, see ICollection::SyncRoot. |
![]() ![]() | IList::IsFixedSize | This API supports the product infrastructure and is not intended to be used directly from your code. For a description of this member, see IList::IsFixedSize. |
| 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.) |
The ListBox::SelectedObjectCollection class stores the selected items in the ListBox. The items stored in the ListBox::SelectedObjectCollection are items contained within the ListBox::ObjectCollection class. The ListBox::ObjectCollection class stores all items displayed in the ListBox.
The following table is an example of how the ListBox::ObjectCollection stores the items of the ListBox as well as their selection states within an example ListBox.
Index | Item | Selection state within the ListBox |
|---|---|---|
0 | object1 | Unselected |
1 | object2 | Selected |
2 | object3 | Unselected |
3 | object4 | Selected |
4 | object5 | Selected |
Based on the ListBox::ObjectCollection demonstrated in the previous table, the following table demonstrates how the ListBox::SelectedObjectCollection would appear.
Index | Selected item from ObjectCollection |
|---|---|
0 | object2 |
1 | object4 |
2 | object5 |
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 ListBox::ObjectCollection class is a member of the ListBox::SelectedObjectCollection. Once you know that the item is located within the collection, you can use the IndexOf method to determine where a specific item within the ListBox::ObjectCollection for the ListBox is stored within the ListBox::SelectedObjectCollection.
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.





