ListBox::SelectedObjectCollection Class

 

Represents the collection of selected items in the ListBox.

Namespace:   System.Windows.Forms
Assembly:  System.Windows.Forms (in System.Windows.Forms.dll)

System::Object
  System.Windows.Forms::ListBox::SelectedObjectCollection

public ref class SelectedObjectCollection : IList, ICollection, 
	IEnumerable

NameDescription
System_CAPS_pubmethodListBox::SelectedObjectCollection(ListBox^)

Initializes a new instance of the ListBox::SelectedObjectCollection class.

NameDescription
System_CAPS_pubpropertyCount

Gets the number of items in the collection.

System_CAPS_pubpropertyIsReadOnly

Gets a value indicating whether the collection is read-only.

System_CAPS_pubpropertyItem[Int32]

Gets the item at the specified index within the collection.

NameDescription
System_CAPS_pubmethodAdd(Object^)

Adds an item to the list of selected items for a ListBox.

System_CAPS_pubmethodClear()

Removes all items from the collection of selected items.

System_CAPS_pubmethodContains(Object^)

Determines whether the specified item is located within the collection.

System_CAPS_pubmethodCopyTo(Array^, Int32)

Copies the entire collection into an existing array at a specified location within the array.

System_CAPS_pubmethodEquals(Object^)

Determines whether the specified object is equal to the current object.(Inherited from Object.)

System_CAPS_protmethodFinalize()

Allows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection.(Inherited from Object.)

System_CAPS_pubmethodGetEnumerator()

Returns an enumerator that can be used to iterate through the selected item collection.

System_CAPS_pubmethodGetHashCode()

Serves as the default hash function. (Inherited from Object.)

System_CAPS_pubmethodGetType()

Gets the Type of the current instance.(Inherited from Object.)

System_CAPS_pubmethodIndexOf(Object^)

Returns the index within the collection of the specified item.

System_CAPS_protmethodMemberwiseClone()

Creates a shallow copy of the current Object.(Inherited from Object.)

System_CAPS_pubmethodRemove(Object^)

Removes the specified object from the collection of selected items.

System_CAPS_pubmethodToString()

Returns a string that represents the current object.(Inherited from Object.)

NameDescription
System_CAPS_pubinterfaceSystem_CAPS_privmethodIList::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.

System_CAPS_pubinterfaceSystem_CAPS_privmethodIList::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.

System_CAPS_pubinterfaceSystem_CAPS_privmethodIList::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.

System_CAPS_pubinterfaceSystem_CAPS_privmethodIList::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.

System_CAPS_pubinterfaceSystem_CAPS_privmethodIList::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.

System_CAPS_pubinterfaceSystem_CAPS_privpropertyICollection::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.

System_CAPS_pubinterfaceSystem_CAPS_privpropertyICollection::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.

System_CAPS_pubinterfaceSystem_CAPS_privpropertyIList::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.

NameDescription
System_CAPS_pubmethodAsParallel()

Overloaded. Enables parallelization of a query.(Defined by ParallelEnumerable.)

System_CAPS_pubmethodAsQueryable()

Overloaded. Converts an IEnumerable to an IQueryable.(Defined by Queryable.)

System_CAPS_pubmethodCast<TResult>()

Casts the elements of an IEnumerable to the specified type.(Defined by Enumerable.)

System_CAPS_pubmethodOfType<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.

.NET Framework
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.

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