Home Library Learn Downloads Support Community
Sign in | United States - English | |
This topic has not yet been rated - Rate this topic

ListView.CheckedIndexCollection Class

.NET Framework 4

Represents the collection containing the indexes to the checked items in a list view control.

System.Object
  System.Windows.Forms.ListView.CheckedIndexCollection

Namespace:  System.Windows.Forms
Assembly:  System.Windows.Forms (in System.Windows.Forms.dll)
C#
C++
F#
VB
Copy 
[ListBindableAttribute(false)]
public class CheckedIndexCollection : IList, 
	ICollection, IEnumerable

The ListView.CheckedIndexCollection type exposes the following members.

  Name Description
Public method ListView.CheckedIndexCollection Initializes a new instance of the ListView.CheckedIndexCollection class.
Top
  Name Description
Public property Count Gets the number of items in the collection.
Public property IsReadOnly Gets a value indicating whether the collection is read-only.
Public property Item Gets the index value at the specified index within the collection.
Top
  Name Description
Public method Contains Determines whether the specified index is located in the collection.
Public method Equals(Object) Determines whether the specified Object is equal to the current Object. (Inherited from Object.)
Protected method Finalize Allows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection. (Inherited from Object.)
Public method GetEnumerator Returns an enumerator that can be used to iterate through the checked index collection.
Public method GetHashCode Serves as a hash function for a particular type. (Inherited from Object.)
Public method GetType Gets the Type of the current instance. (Inherited from Object.)
Public method IndexOf Returns the index within the System.Windows.Forms.ListView.CheckedIndexCollection of the specified index from the ListView.ListViewItemCollection of the list view control.
Protected method MemberwiseClone Creates a shallow copy of the current Object. (Inherited from Object.)
Public method ToString Returns a string that represents the current object. (Inherited from Object.)
Top
  Name Description
Public Extension Method AsParallel Enables parallelization of a query. (Defined by ParallelEnumerable.)
Public Extension Method AsQueryable Converts an IEnumerable to an IQueryable. (Defined by Queryable.)
Public Extension Method Cast<TResult> Casts the elements of an IEnumerable to the specified type. (Defined by Enumerable.)
Public Extension Method OfType<TResult> Filters the elements of an IEnumerable based on a specified type. (Defined by Enumerable.)
Top
  Name Description
Explicit interface implemetation Private method ICollection.CopyTo Infrastructure. Copies the collection of checked-item indexes into an array.
Explicit interface implemetation Private property ICollection.IsSynchronized Infrastructure. Gets a value indicating whether access to the collection is synchronized (thread safe).
Explicit interface implemetation Private property ICollection.SyncRoot Infrastructure. Gets an object that can be used to synchronize access to the collection of controls.
Explicit interface implemetation Private method IList.Add Infrastructure. Adds an item to the collection.
Explicit interface implemetation Private method IList.Clear Infrastructure. Removes all items from the collection.
Explicit interface implemetation Private method IList.Contains Infrastructure. Checks whether the index corresponding with the ListViewItem is checked.
Explicit interface implemetation Private method IList.IndexOf Infrastructure. Returns the index of the specified object in the ListView.CheckedIndexCollection.
Explicit interface implemetation Private method IList.Insert Infrastructure. Inserts an item into the collection at a specified index.
Explicit interface implemetation Private property IList.IsFixedSize Infrastructure. Gets a value indicating whether the ListView.CheckedIndexCollection has a fixed size.
Explicit interface implemetation Private property IList.Item Infrastructure. Gets or sets an object in the ListView.CheckedIndexCollection.
Explicit interface implemetation Private method IList.Remove Infrastructure. Removes the first occurrence of an item from the collection.
Explicit interface implemetation Private method IList.RemoveAt Infrastructure. Removes an item from the collection at a specified index.
Top

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.

.NET Framework

Supported in: 4, 3.5, 3.0, 2.0, 1.1, 1.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

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.
Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.
Did you find this helpful?
(1500 characters remaining)
Community Content Add
Annotations FAQ