Information
The topic you requested is included in another documentation set. For convenience, it's displayed below. Choose Switch to see the topic in its original location.

CheckedListBox.CheckedItems Property

Collection of checked items in this CheckedListBox.

[Visual Basic]
Public ReadOnly Property CheckedItems As _
   CheckedListBox.CheckedItemCollection
[C#]
public CheckedListBox.CheckedItemCollection CheckedItems {get;}
[C++]
public: __property CheckedListBox.CheckedItemCollection*
   get_CheckedItems();
[JScript]
public function get CheckedItems() :
   CheckedListBox.CheckedItemCollection;

Property Value

The CheckedListBox.CheckedItemCollection collection for the CheckedListBox.

Remarks

The collection is a subset of the objects in the Items collection, representing only those items that are in a state of CheckState.Checked or CheckState.Indeterminate. The indexes in this collection are in ascending order.

Example

[Visual Basic, C#, C++] The following example enumerates the checked items in the CheckedListBox.CheckedIndexCollection to see what check state an item is in. The example demonstrates using the CheckedIndices property to get the CheckedListBox.CheckedIndexCollection, and the CheckedItems property to get the CheckedListBox.CheckedItemCollection.

[Visual Basic, C#, C++] The first loop uses the GetItemCheckState method to get the CheckState of each checked item, given the index of the item. The second loop also uses GetItemCheckState, but uses the ObjectCollection.IndexOf method to retrieve the index for the item.

[Visual Basic] 
Private Sub WhatIsChecked_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles WhatIsChecked.Click
    ' Display in a message box all the items that are checked.
    Dim indexChecked As Integer
    Dim itemChecked As Object
    Const quote As String = """"

    ' First show the index and check state of all selected items.
    For Each indexChecked In CheckedListBox1.CheckedIndices
        ' The indexChecked variable contains the index of the item.
        MessageBox.Show("Index#: " + indexChecked.ToString() + ", is checked. Checked state is:" + _
                        CheckedListBox1.GetItemCheckState(indexChecked).ToString() + ".")
    Next

    ' Next show the object title and check state for each item selected.
    For Each itemChecked In CheckedListBox1.CheckedItems

        ' Use the IndexOf method to get the index of an item.
        MessageBox.Show("Item with title: " + quote + itemChecked.ToString() + quote + _
                        ", is checked. Checked state is: " + _
                        CheckedListBox1.GetItemCheckState(CheckedListBox1.Items.IndexOf(itemChecked)).ToString() + ".")
    Next

End Sub

[C#] 
private void WhatIsChecked_Click(object sender, System.EventArgs e) {
    // Display in a message box all the items that are checked.

    // First show the index and check state of all selected items.
    foreach(int indexChecked in checkedListBox1.CheckedIndices) {
        // The indexChecked variable contains the index of the item.
        MessageBox.Show("Index#: " + indexChecked.ToString() + ", is checked. Checked state is:" +
                        checkedListBox1.GetItemCheckState(indexChecked).ToString() + ".");
    }

    // Next show the object title and check state for each item selected.
    foreach(object itemChecked in checkedListBox1.CheckedItems) {

        // Use the IndexOf method to get the index of an item.
        MessageBox.Show("Item with title: \"" + itemChecked.ToString() + 
                        "\", is checked. Checked state is: " + 
                        checkedListBox1.GetItemCheckState(checkedListBox1.Items.IndexOf(itemChecked)).ToString() + ".");
    }

}

[C++] 
private:
    void WhatIsChecked_Click(Object* /*sender*/, System::EventArgs* /*e*/) {
        // Display in a message box all the items that are checked.

        // First show the index and check state of all selected items.
        IEnumerator* myEnum1 = checkedListBox1->CheckedIndices->GetEnumerator();
        while (myEnum1->MoveNext()) {
            Int32 indexChecked =  *__try_cast<__box Int32*>(myEnum1->Current);

            // The indexChecked variable contains the index of the item.
            MessageBox::Show(String::Concat(S"Index#: ", __box(indexChecked), S", is checked. Checked state is: ", 
                __box(checkedListBox1->GetItemCheckState(indexChecked)), S"."));
        }

        // Next show the Object* title and check state for each item selected.
        IEnumerator* myEnum2 = checkedListBox1->CheckedItems->GetEnumerator();
        while (myEnum2->MoveNext()) {
            Object* itemChecked = __try_cast<Object*>(myEnum2->Current);

            // Use the IndexOf method to get the index of an item.
            MessageBox::Show(String::Concat(S"Item with title: \"", itemChecked, 
                S"\", is checked. Checked state is: ", 
                __box(checkedListBox1->GetItemCheckState(checkedListBox1->Items->IndexOf(itemChecked))), S"."));
        }
    }

[JScript] No example is available for JScript. To view a Visual Basic, C#, or C++ example, click the Language Filter button Language Filter in the upper-left corner of the page.

Requirements

Platforms: Windows 98, Windows NT 4.0, Windows Millennium Edition, Windows 2000, Windows XP Home Edition, Windows XP Professional, Windows Server 2003 family

See Also

CheckedListBox Class | CheckedListBox Members | System.Windows.Forms Namespace | CheckedListBox.CheckedItemCollection

Was this page helpful?
(1500 characters remaining)
Thank you for your feedback
Show:
© 2015 Microsoft