CheckedListBox.CheckedIndexCollection CheckedListBox.CheckedIndexCollection CheckedListBox.CheckedIndexCollection CheckedListBox.CheckedIndexCollection Class

定義

public: ref class CheckedListBox::CheckedIndexCollection : System::Collections::IList

public class CheckedListBox.CheckedIndexCollection : System.Collections.IList

type CheckedListBox.CheckedIndexCollection = class
    interface IList
    interface ICollection
    interface IEnumerable

Public Class CheckedListBox.CheckedIndexCollection
Implements IList

継承

ObjectObjectObjectObject

CheckedListBox.CheckedIndexCollectionCheckedListBox.CheckedIndexCollectionCheckedListBox.CheckedIndexCollectionCheckedListBox.CheckedIndexCollection

実装

ICollectionICollectionICollectionICollection IEnumerableIEnumerableIEnumerableIEnumerable IListIListIListIList

例

次の例でチェックされた項目の列挙、CheckedListBox.CheckedIndexCollectionに何をチェック項目の状態を参照してください。The following example enumerates the checked items in the CheckedListBox.CheckedIndexCollection to see what check state an item is in. この例で、GetItemCheckState項目のチェックの状態を設定します。The example demonstrates using the GetItemCheckState method to set the check state of an item. 使用しても示します、CheckedIndicesを取得するプロパティ、 CheckedListBox.CheckedIndexCollection、およびCheckedItemsを取得するプロパティ、CheckedListBox.CheckedItemCollectionします。The example also demonstrates using the CheckedIndices property to get the CheckedListBox.CheckedIndexCollection, and the CheckedItems property to get the CheckedListBox.CheckedItemCollection.

最初のループを使用して、GetItemCheckStateを取得するメソッド、CheckState項目のインデックスのチェックされた各項目の。The first loop uses the GetItemCheckState method to get the CheckState of each checked item, given the index of the item. 2 番目のループにも使用GetItemCheckStateが使用して、ListBox.ObjectCollection.IndexOf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

チェックされているインデックス コレクションは、インデックスのサブセット内のすべての項目のコレクションをCheckedListBoxコントロール。The checked indexes collection is a subset of the indexes into the collection of all items in the CheckedListBox control. これらのインデックスは、オンまたは未確定の状態で項目を指定します。These indexes specify items in a checked or indeterminate state.

次の表では、コントロール (すべての項目がコントロールに含まれている場合) 内の項目のインデックス付きコレクションの例を示します。The following table is an example of the indexed collection of items in the control (all items contained in the control).

前の例に基づき、次の表は、チェックされた項目のインデックスのインデックス付きコレクションです。Based on the previous example, the following table shows the indexed collection of indexes of checked items.

CheckedListBoxストアドのインデックスにアクセスするための 2 つのメンバーをクラスには、Item[Int32]プロパティおよびIndexOfメソッド。The CheckedListBox class has two members that allow you to access the stored indexes, the Item[Int32] property and the IndexOf method.

前の例への呼び出しに基づく、 Item[Int32] 1 のパラメーター値を持つプロパティが 3 の値を返します。Based on the previous example, a call to the Item[Int32] property with a parameter value of 1 returns a value of 3. 呼び出しIndexOf3 のパラメーター 1 の値を返します。A call to IndexOf with a parameter of 3 returns a value of 1.

プロパティ

メソッド

明示的なインターフェイスの実装

拡張メソッド

適用対象

こちらもご覧ください

• CheckedIndices
• CheckedItems
• Items