IEditableCollectionView.EditItem(Object) Metode

Definisi

Ruang nama:

System.ComponentModel

Rakitan:

WindowsBase.dll

Memulai transaksi edit item yang ditentukan.

public:
 void EditItem(System::Object ^ item);

public void EditItem (object item);

abstract member EditItem : obj -> unit

Public Sub EditItem (item As Object)

Parameter

item

Object

Item yang akan diedit.

Contoh

Contoh berikut membuat formulir yang meminta pengguna untuk mengedit item yang sudah ada. Jika pengguna mengirimkan formulir, perubahan diterapkan pada koleksi. Jika pengguna membatalkan formulir, perubahan akan dibuang. Untuk seluruh sampel, lihat Mengubah Koleksi dengan Menggunakan Sampel IEditableCollectionView .

IEditableCollectionView editableCollectionView =
            itemsControl.Items as IEditableCollectionView;

// Create a window that prompts the user to edit an item.
ChangeItemWindow win = new ChangeItemWindow();
editableCollectionView.EditItem(itemsControl.SelectedItem);
win.DataContext = itemsControl.SelectedItem;

// If the user submits the new item, commit the changes.
// If the user cancels the edits, discard the changes. 
if ((bool)win.ShowDialog())
{
    editableCollectionView.CommitEdit();
}
else
{
    // If the objects in the collection can discard pending 
    // changes, calling IEditableCollectionView.CancelEdit
    // will revert the changes. Otherwise, you must provide
    // your own logic to revert the changes in the object.
    
    if (!editableCollectionView.CanCancelEdit)
    {
        // Provide logic to revert changes.
    }

    editableCollectionView.CancelEdit();
}

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

' Create a window that prompts the user to edit an item.
Dim win As New ChangeItemWindow()
editableCollectionView.EditItem(itemsControl.SelectedItem)
win.DataContext = itemsControl.SelectedItem

' If the user submits the new item, commit the changes.
' If the user cancels the edits, discard the changes. 
If CBool(win.ShowDialog()) Then
    editableCollectionView.CommitEdit()
Else
    ' If the objects in the collection can discard pending 
    ' changes, calling IEditableCollectionView.CancelEdit
    ' will revert the changes. Otherwise, you must provide
    ' your own logic to revert the changes in the object.

    If Not editableCollectionView.CanCancelEdit Then
        ' Provide logic to revert changes.
    End If

    editableCollectionView.CancelEdit()
End If