private void RemoveGroupButton_Click(object sender, RoutedEventArgs e)
{
using (var context = new ExpansesManagerContext())
{
if (TreeView1.SelectedItem == null)
{
MessageBox.Show("Please select first.");
return;
}
//context.Groups.FirstOrDefault(g => g.Name == TreeView1.SelectedItem.ToString() && g.IsActive == true).IsActive = false;
var group = context.Groups.FirstOrDefault(g => g.Name == TreeView1.SelectedItem.ToString() && g.IsActive == true);
context.Groups.Remove(group);
context.SaveChanges();
}
TreeViewItem newGroup = new TreeViewItem();
newGroup.Name = TreeView1.SelectedItem.ToString();
MainApp mApp = new MainApp();
this.Close();
mApp.ShowDialog();
}