潜移黙化学会WPF(テクニック編)--Items要素を持つコントロールサブアイテム取得(一)

1.treeviewのItem取得

var g = this.tree.ItemContainerGenerator;



TreeViewItem item = g.ContainerFromItem(this.tree.SelectedItem) as TreeViewItem;

if (item != null) item.IsExpanded = true;

2.ListBox

var g = listbox  .ItemContainerGenerator;



ListBoxItem item = g.ContainerFromIndex(listbox  .SelectedIndex) as ListBoxItem

3.Combobox

(comboBox1.ItemContainerGenerator.ContainerFromIndex(comboBox1.SelectedIndex) as ComboBoxItem).Content.ToString()