ListView::CheckedListViewItemCollection Class
Represents the collection of checked items in a list view control.
Assembly: System.Windows.Forms (in System.Windows.Forms.dll)
The ListView::CheckedListViewItemCollection type exposes the following members.
| Name | Description | |
|---|---|---|
![]() | ListView::CheckedListViewItemCollection | Initializes a new instance of the ListView::CheckedListViewItemCollection 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 within the collection. |
| Name | Description | |
|---|---|---|
![]() | Contains | Determines whether the specified item is located in the collection. |
![]() | ContainsKey | Determines if a column with the specified key is contained in the collection. |
![]() | CopyTo | 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 checked item collection. |
![]() | GetHashCode | Serves as a hash function for a particular type. (Inherited from Object.) |
![]() | GetType | Gets the Type of the current instance. (Inherited from Object.) |
![]() | IndexOf | Returns the index within the collection of the specified item. |
![]() | IndexOfKey | Determines the index for an item with the specified key. |
![]() | MemberwiseClone | Creates a shallow copy of the current Object. (Inherited from Object.) |
![]() | ToString | Returns a string that represents the current object. (Inherited from Object.) |
| Name | Description | |
|---|---|---|
![]() | AsParallel | Enables parallelization of a query. (Defined by ParallelEnumerable.) |
![]() | AsQueryable | 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.) |
| Name | Description | |
|---|---|---|
![]() ![]() | ICollection::IsSynchronized | Infrastructure. Gets a value indicating whether access to the ListView::CheckedListViewItemCollection is synchronized (thread safe). |
![]() ![]() | ICollection::SyncRoot | Infrastructure. Gets an object that can be used to synchronize access to the collection of controls. |
![]() ![]() | IList::Add | Infrastructure. Adds an item to the collection. |
![]() ![]() | IList::Clear | Infrastructure. Removes all items from the collection. |
![]() ![]() | IList::Contains | Infrastructure. Verifies whether the item is checked. |
![]() ![]() | IList::IndexOf | Infrastructure. Returns the index within the collection of the specified item. |
![]() ![]() | IList::Insert | Infrastructure. Inserts an item into the collection at a specified index. |
![]() ![]() | IList::IsFixedSize | Infrastructure. Gets a value indicating whether the collection has a fixed size. |
![]() ![]() | IList::Item | Infrastructure. Gets or sets an object from the collection. |
![]() ![]() | IList::Remove | Infrastructure. Removes the first occurrence of an item from the collection. |
![]() ![]() | IList::RemoveAt | Infrastructure. Removes an item from the collection at the specified index. |
A ListView::CheckedListViewItemCollection stores the checked items in a ListView control. Items can only be checked if the CheckBoxes property of the ListView control is set to true. The items stored in the ListView::CheckedListViewItemCollection are items contained in the ListView::ListViewItemCollection. The ListView::ListViewItemCollection class stores all items displayed in the ListView control.
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 | Checked state in the ListView |
|---|---|---|
0 | Item1 | Unchecked |
1 | Item2 | Checked |
2 | Item3 | Unchecked |
3 | Item4 | Checked |
4 | Item5 | Checked |
Based on the ListView::ListViewItemCollection example in the previous table, the following table demonstrates how the ListView::CheckedListViewItemCollection would appear.
Index | Checked item in 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::CheckedListViewItemCollection. 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::CheckedListViewItemCollection.
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.

