CheckedListBox.Items 屬性

定義

取得這個 CheckedListBox 中的項目集合。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

屬性值

表示 CheckedListBox.ObjectCollection 中項目的 CheckedListBox 集合。The CheckedListBox.ObjectCollection collection representing the items in the CheckedListBox.

範例

下列範例會列舉 CheckedListBox.CheckedIndexCollection 中的已核取專案,以查看專案所在的檢查狀態。The following example enumerates the checked items in the CheckedListBox.CheckedIndexCollection to see what check state an item is in. 這個範例會使用 Items 屬性來取得 CheckedListBox.ObjectCollection,以使用 ListBox.ObjectCollection.IndexOf 方法來抓取專案的索引。The example uses the Items property to get the CheckedListBox.ObjectCollection to retrieve the index of an item using the ListBox.ObjectCollection.IndexOf method. 此範例也會示範如何使用 CheckedIndices 屬性來取得 CheckedListBox.CheckedIndexCollectionCheckedItems 屬性,以取得 CheckedListBox.CheckedItemCollectionThe example also demonstrates using the CheckedIndices property to get the CheckedListBox.CheckedIndexCollection, and the CheckedItems property to get the CheckedListBox.CheckedItemCollection.

第一個迴圈會使用 GetItemCheckState 方法來取得每個已核取專案的 CheckState,並指定專案的索引。The first loop uses the GetItemCheckState method to get the CheckState of each checked item, given the index of the item. 第二個迴圈也會使用 GetItemCheckState,但會使用 ListBox.ObjectCollection.IndexOf 方法來抓取專案的索引。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

備註

Items 屬性可讓您取得目前儲存在 CheckedListBox 控制項中之專案清單的參考。The Items property enables you to obtain a reference to the list of items that are currently stored in a CheckedListBox control. 使用此參考,您可以加入專案、移除專案,以及取得集合中的專案計數。With this reference, you can add items, remove items, and obtain a count of the items in the collection. 如需可使用專案集合執行之工作的詳細資訊,請參閱 CheckedListBox.ObjectCollection 類別參考主題。For more information on the tasks that can be performed with the item collection, see the CheckedListBox.ObjectCollection class reference topics.

適用於

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