ListView::CheckedIndexCollection Class
Represents the collection containing the indexes to the checked items in a list view control.
Assembly: System.Windows.Forms (in System.Windows.Forms.dll)
The ListView::CheckedIndexCollection type exposes the following members.
| Name | Description | |
|---|---|---|
![]() | ListView::CheckedIndexCollection | Initializes a new instance of the ListView::CheckedIndexCollection class. |
| Name | Description | |
|---|---|---|
![]() | Count | Gets the number of items in the collection. |
![]() | IsReadOnly | Gets a value indicating whether the collection is read-only. |
![]() | Item | Gets the index value at the specified index within the collection. |
| Name | Description | |
|---|---|---|
![]() | Contains | Determines whether the specified index is located in the collection. |
![]() | 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 index 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 System.Windows.Forms::ListView::CheckedIndexCollection of the specified index from the ListView::ListViewItemCollection of the list view control. |
![]() | 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::CopyTo | Infrastructure. Copies the collection of checked-item indexes into an array. |
![]() ![]() | ICollection::IsSynchronized | Infrastructure. Gets a value indicating whether access to the collection 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. Checks whether the index corresponding with the ListViewItem is checked. |
![]() ![]() | IList::IndexOf | Infrastructure. Returns the index of the specified object in the ListView::CheckedIndexCollection. |
![]() ![]() | IList::Insert | Infrastructure. Inserts an item into the collection at a specified index. |
![]() ![]() | IList::IsFixedSize | Infrastructure. Gets a value indicating whether the ListView::CheckedIndexCollection has a fixed size. |
![]() ![]() | IList::Item | Infrastructure. Gets or sets an object in the ListView::CheckedIndexCollection. |
![]() ![]() | IList::Remove | Infrastructure. Removes the first occurrence of an item from the collection. |
![]() ![]() | IList::RemoveAt | Infrastructure. Removes an item from the collection at a specified index. |
A ListView::CheckedIndexCollection stores the indexes to the checked items in a ListView control. Items can be checked only if the CheckBoxes property of the ListView control is set to true. The indexes stored in the ListView::CheckedIndexCollection are index positions within the ListView::ListViewItemCollection. The ListView::ListViewItemCollection stores all items displayed in the ListView control.
The following table is an example of how the ListView::ListViewItemCollection stores the items of the ListView as well as their checked 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::CheckedIndexCollection would appear.
Index | Index of checked item in ListViewItemCollection |
|---|---|
0 | 1 |
1 | 3 |
2 | 4 |
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 index position from the ListView::ListViewItemCollection is one of the indexes stored in the ListView::CheckedIndexCollection. Once you know that the item is in the collection, you can use the IndexOf method to determine the position of the index in the ListView::CheckedIndexCollection.
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.

