private async void DeleteGroupButtonClick(object sender, RoutedEventArgs e)
{
if (GroupDataGrid.SelectedIndex == -1)
{
return;
}
await using var dbContext = new ApplicationContext();
var selectedRow = GroupDataGrid.SelectedItem as IShortGroup ??
throw new ArgumentNullException(nameof(GroupDataGrid.SelectedItem));
foreach (var model in await dbContext.Models
.Include(x => x.Group)
.Where(x => x.Group.Id == selectedRow.Id)
.ToArrayAsync())
{
model.Group = null;
}
dbContext.Groups.Remove(new Group
{
Id = selectedRow.Id
});
await dbContext.SaveChangesAsync();
await Task.WhenAll(GroupDataGrid.ReloadGroupTableAsync(),
MainWindowProvider.Instance.Window.ModelsDataGrid.ReloadModelsTableAsync());
}
public GroupPage()
{
InitializeComponent();
using (SmallBusinessDBEntities context = new SmallBusinessDBEntities()) {
try {
groupList = context.Groups.ToList();
GroupDataGrid.ItemsSource = groupList;
GroupDataGrid.SelectedIndex = 0;
GroupDataGrid.Focus();
}
catch (Exception ex) {
MessageBox.Show(ex.Message);
}
}
}
private async void FillTableWhenInizialized(object sender, EventArgs e)
{
await GroupDataGrid.ReloadGroupTableAsync();
}
