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CheckedListBox.CheckedIndices Eigenschaft

Definition

Auflistung der aktivierten Indizes in dieser CheckedListBox.

public:
 property System::Windows::Forms::CheckedListBox::CheckedIndexCollection ^ CheckedIndices { System::Windows::Forms::CheckedListBox::CheckedIndexCollection ^ get(); };
[System.ComponentModel.Browsable(false)]
public System.Windows.Forms.CheckedListBox.CheckedIndexCollection CheckedIndices { get; }
[<System.ComponentModel.Browsable(false)>]
member this.CheckedIndices : System.Windows.Forms.CheckedListBox.CheckedIndexCollection
Public ReadOnly Property CheckedIndices As CheckedListBox.CheckedIndexCollection

Eigenschaftswert

CheckedListBox.CheckedIndexCollection

Die CheckedListBox.CheckedIndexCollection-Auflistung für CheckedListBox.

Attribute

Beispiele

Im folgenden Beispiel werden die eingecheckten Elemente aufgelistet CheckedListBox.CheckedIndexCollection , um zu sehen, in welchem Prüfzustand ein Element vorhanden ist. Im Beispiel wird die Verwendung der Eigenschaft zum Abrufen der CheckedIndices CheckedListBox.CheckedIndexCollectionEigenschaft und der CheckedItems Eigenschaft zum Abrufen der CheckedListBox.CheckedItemCollectionEigenschaft veranschaulicht.

Die erste Schleife verwendet die GetItemCheckState Methode, um die CheckState einzelnen überprüften Elemente abzurufen, da der Index des Elements angegeben ist. Die zweite Schleife verwendet GetItemCheckStateauch die ListBox.ObjectCollection.IndexOf Methode, um den Index für das Element abzurufen.

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

Hinweise

Die Auflistung überprüfter Indizes ist eine Teilmenge der Indizes in der Auflistung aller Elemente im CheckedListBox Steuerelement. Diese Indizes geben Elemente in einem eingecheckten oder unbestimmten Zustand an.

Gilt für

Siehe auch