IEditableCollectionView.CanAddNew Property

 

Gets a value that indicates whether a new item can be added to the collection.

Namespace:   System.ComponentModel
Assembly:  WindowsBase (in WindowsBase.dll)

ReadOnly Property CanAddNew As Boolean

Property Value

Type: System.Boolean

true if a new item can be added to the collection; otherwise, false.

An IEditableCollectionView can add a new item if the following are true:

The following example checks whether an item can be added to the collection. If CanAddNew is false, the example tells the user that an item cannot be added. Otherwise, it shows a form that prompts the user to add a new item. For the entire sample, see Changing a Collection by Using IEditableCollectionView Sample .

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

.NET Framework
Available since 3.0
Silverlight
Available since 3.0
Windows Phone Silverlight
Available since 7.1
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