IEditableCollectionView.CanAddNew IEditableCollectionView.CanAddNew IEditableCollectionView.CanAddNew IEditableCollectionView.CanAddNew Property

정의

컬렉션에 새 항목을 추가할 수 있는지 여부를 나타내는 값을 가져옵니다.Gets a value that indicates whether a new item can be added to the collection.

public:
 property bool CanAddNew { bool get(); };
public bool CanAddNew { get; }
member this.CanAddNew : bool
Public ReadOnly Property CanAddNew As Boolean

속성 값

컬렉션에 새 항목을 추가할 수 있으면 true이고, 그러지 않으면 false입니다.true if a new item can be added to the collection; otherwise, false.

예제

다음 예제에서는 컬렉션에는 항목을 추가할 수 있는지 여부를 확인 합니다.The following example checks whether an item can be added to the collection. 하는 경우 CanAddNewfalse의 예제에서는 사용자 항목을 추가할 수 없습니다.If CanAddNew is false, the example tells the user that an item cannot be added. 그렇지 않으면 새 항목을 추가 하 라는 메시지는 양식을 보여 줍니다.Otherwise, it shows a form that prompts the user to add a new item. 전체 샘플을 보려면 IEditableCollectionView 예제를 사용 하 여 컬렉션을 변경 합니다.For the entire sample, see Changing a Collection by Using IEditableCollectionView Sample .

IEditableCollectionView editableCollectionView = 
    itemsControl.Items as IEditableCollectionView; 

if (!editableCollectionView.CanAddNew)
{
    MessageBox.Show("You cannot add items to the list.");
    return;
}

// Create a window that prompts the user to enter a new
// item to sell.
ChangeItemWindow win = new ChangeItemWindow();

//Create a new item to be added to the collection.
win.DataContext = editableCollectionView.AddNew();

// If the user submits the new item, commit the new
// object to the collection.  If the user cancels 
// adding the new item, discard the new item.
if ((bool)win.ShowDialog())
{
    editableCollectionView.CommitNew();
}
else
{
    editableCollectionView.CancelNew();
}

Dim editableCollectionView As IEditableCollectionView = TryCast(itemsControl.Items, IEditableCollectionView)

If Not editableCollectionView.CanAddNew Then
	MessageBox.Show("You cannot add items to the list.")
	Return
End If

' Create a window that prompts the user to enter a new
' item to sell.
Dim win As New ChangeItemWindow()

'Create a new item to be added to the collection.
win.DataContext = editableCollectionView.AddNew()

' If the user submits the new item, commit the new
' object to the collection.  If the user cancels 
' adding the new item, discard the new item.
If CBool(win.ShowDialog()) Then
	editableCollectionView.CommitNew()
Else
	editableCollectionView.CancelNew()
End If

설명

IEditableCollectionView 다음에 해당할 경우 새 항목을 추가할 수 있습니다.An IEditableCollectionView can add a new item if the following are true:

적용 대상