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)

bool CanAddNew { get; }

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 .

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();
}

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