Action

Action

Result

In the MainForm.cs code

private void listViewMain_AfterLabelEdit

window, modify the After-

(object sender, System.Windows.

LabelEdit event handler to call

Forms.LabelEditEventArgs e)

{

a new UpdatePhotoCaption

if (e.Label == null)

method to process an edit when

{

photographs are displayed.

// Edit cancelled by the user

e.CancelEdit = true;

return;

}

ListViewItem item =

listViewMain.Items[e.Item];

if (this._albumsShown)

e.CancelEdit = !UpdateAlbumName(e.Label,

item);

else

e.CancelEdit = !UpdatePhotoCaption(e.Label,

item);

}

Action

Result

Add the UpdatePhotoCaption

private bool UpdatePhotoCaption

method to the MainForm class.

(string caption, ListViewItem item)

{

Make sure the new caption is

if (caption.Length == 0 || !(item.Tag is int))

not empty.

{

MessageBox.Show("Invalid caption value.");

return false;

}

Determine the index for this

int index = (int)item.Tag;

photograph.

Set the photograph’s caption to

_album[index].Caption = caption;

the new value.

Save the album to store the new

try

value.

{

_album.Save(_album.FileName);

}

catch (Exception)

{

MessageBox.Show("Unable to save new "

+ "caption to album file.");

}

return true;

}

Action

Result

7

In the MainForm.cs [Design]

private void menuEdit_Popup

window, add a Popup event

(object sender, System.EventArgs e)

handler for the menuEditLabel

{

menu.

8

Enable the contained menus

menuEditLabel.Enabled

only if a single item is selected

= (listViewMain.SelectedItems.Count == 1);

in the view.

menuProperties.Enabled

= (listViewMain.SelectedItems.Count == 1);

9

Set the menu’s text to “Name”

if (this._albumsShown)

or “Caption” depending on

menuEditLabel.Text = "&Name";

which type of object is displayed

else

menuEditLabel.Text = "&Caption";

in the list.

}