Programmatically set handler [WPF]

[saktya]

[CODE]

<TreeView Name="_treeViewMain" TreeViewItem.Selected = "TreeViewItem_Selected">

/CODE]

How I can set the Handler of TreeViewItem.Selected programmatically not using the xaml. Because I need to catch The TreeViewItem as the original source.

Thanks

[cilu]

TreeViewItem.Selected += new RoutedEventHandler(TreeViewItem_Selected);