CheckedListBox.Items プロパティ

定義

この CheckedListBox 内の項目のコレクションを取得します。Gets the collection of items in this CheckedListBox.

public:
 property System::Windows::Forms::CheckedListBox::ObjectCollection ^ Items { System::Windows::Forms::CheckedListBox::ObjectCollection ^ get(); };
public System.Windows.Forms.CheckedListBox.ObjectCollection Items { get; }
member this.Items : System.Windows.Forms.CheckedListBox.ObjectCollection
Public ReadOnly Property Items As CheckedListBox.ObjectCollection

プロパティ値

CheckedListBox.ObjectCollection 内の項目を表す CheckedListBox コレクション。The CheckedListBox.ObjectCollection collection representing the items in the CheckedListBox.

次の例では、CheckedListBox.CheckedIndexCollection 内のチェックされた項目を列挙して、項目がどのような状態にあるかを確認します。The following example enumerates the checked items in the CheckedListBox.CheckedIndexCollection to see what check state an item is in. この例では、Items プロパティを使用して、ListBox.ObjectCollection.IndexOf メソッドを使用して項目のインデックスを取得する CheckedListBox.ObjectCollection を取得します。The example uses the Items property to get the CheckedListBox.ObjectCollection to retrieve the index of an item using the ListBox.ObjectCollection.IndexOf method. また、この例では、CheckedIndices プロパティを使用して CheckedListBox.CheckedIndexCollectionを取得し、CheckedItems プロパティを使用して CheckedListBox.CheckedItemCollectionを取得する方法も示しています。The example also demonstrates using the CheckedIndices property to get the CheckedListBox.CheckedIndexCollection, and the CheckedItems property to get the CheckedListBox.CheckedItemCollection.

最初のループでは、GetItemCheckState メソッドを使用して、項目のインデックスが指定された各チェック項目の CheckState を取得します。The first loop uses the GetItemCheckState method to get the CheckState of each checked item, given the index of the item. 2番目のループでは GetItemCheckStateも使用しますが、ListBox.ObjectCollection.IndexOf メソッドを使用して項目のインデックスを取得します。The second loop also uses GetItemCheckState, but uses the ListBox.ObjectCollection.IndexOf method to retrieve the index for the item.

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 =  *safe_cast<Int32^>(myEnum1->Current);
      
      // The indexChecked variable contains the index of the item.
      MessageBox::Show( String::Concat( "Index#: ", indexChecked, ", is checked. Checked state is: ", checkedListBox1->GetItemCheckState( indexChecked ), "." ) );
   }

   
   // Next show the Object* title and check state for each item selected.
   IEnumerator^ myEnum2 = checkedListBox1->CheckedItems->GetEnumerator();
   while ( myEnum2->MoveNext() )
   {
      Object^ itemChecked = safe_cast<Object^>(myEnum2->Current);
      
      // Use the IndexOf method to get the index of an item.
      MessageBox::Show( String::Concat( "Item with title: \"", itemChecked, "\", is checked. Checked state is: ", checkedListBox1->GetItemCheckState( checkedListBox1->Items->IndexOf( itemChecked ) ), "." ) );
   }
}


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() + ".");
    }

}
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

注釈

Items プロパティを使用すると、CheckedListBox コントロールに現在格納されている項目のリストへの参照を取得できます。The Items property enables you to obtain a reference to the list of items that are currently stored in a CheckedListBox control. この参照を使用すると、項目を追加したり、項目を削除したり、コレクション内の項目の数を取得したりできます。With this reference, you can add items, remove items, and obtain a count of the items in the collection. 項目コレクションで実行できるタスクの詳細については、「CheckedListBox.ObjectCollection クラスの参照トピック」を参照してください。For more information on the tasks that can be performed with the item collection, see the CheckedListBox.ObjectCollection class reference topics.

適用対象

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