CheckedListBox.CheckedIndices Egenskap

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

Egenskapsvärde

Samlingen CheckedListBox.CheckedIndexCollection för CheckedListBox.

Attribut

BrowsableAttribute

Exempel

I följande exempel räknas de markerade objekten CheckedListBox.CheckedIndexCollection upp i för att se vilket kontrolltillstånd ett objekt finns i. Exemplet visar hur du använder CheckedIndices egenskapen för att hämta CheckedListBox.CheckedIndexCollectionegenskapen och CheckedItems för att hämta CheckedListBox.CheckedItemCollection.

Den första loopen GetItemCheckState använder metoden för att hämta CheckState varje markerat objekt, med tanke på objektets index. Den andra loopen använder GetItemCheckStateockså , men använder ListBox.ObjectCollection.IndexOf metoden för att hämta indexet för objektet.

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

Kommentarer

Samlingen med kontrollerade index är en delmängd av indexen i samlingen av alla objekt i CheckedListBox kontrollen. Dessa index anger objekt i ett markerat eller obestämt tillstånd.

Se även

• CheckedListBox.CheckedIndexCollection