public newEmployee()
{
InitializeComponent();
// Edit Employee
if (Application.Current.Properties["mit_edit_id"] != null)
{
int mit_id;
var bool5 = Int32.TryParse(Application.Current.Properties["mit_edit_id"].ToString(), out mit_id);
Mitarbeiter mit = Bibliothek.Mitarbeiter_nach_ID(mit_id);
this.mitName.Text = mit.Name;
this.mitVorname.Text = mit.Vorname;
this.mitAktiv.IsChecked = mit.IstAktiv;
this.mitSubmit.Tag = "edit";
// Create hidden button to save employee id
this.btnID.Tag = mit_id.ToString();
// Edit window opened and loaded.. reset trigger property
Application.Current.Properties["mit_edit_id"] = null;
}
}