private void searcht_TextChanged(object sender, TextChangedEventArgs e)
{
string filterText = searcht.Text;
ICollectionView cv = CollectionViewSource.GetDefaultView(teachertable.ItemsSource);
if (!string.IsNullOrEmpty(filterText))
{
cv.Filter = o => {
tTeacher p = o as tTeacher;
return(p.FirstName.ToUpper().StartsWith(filterText.ToUpper()));
};
}
else
{
teachertable.ItemsSource = db.tTeachers.ToList();
}
}
private void Button_Click_4(object sender, RoutedEventArgs e)
{
try
{
tTeacher teacher = new tTeacher();
teacher.FirstName = firstnamet.Text;
teacher.LastName = lastnamet.Text;
teacher.Telephone = telephonet.Text;
teacher.ContactEmail = emailt.Text;
teacher.GroupFK = Convert.ToInt32(((ComboBoxItem)groupt.SelectedItem).HiddenValue);
db.tTeachers.Add(teacher);
db.SaveChanges();
teachertable.ItemsSource = db.tTeachers.ToList();
ClearBox();
}
catch (Exception)
{
MessageBox.Show("Error while editing. Check: email, telephone number, group", "Error", MessageBoxButton.OK, MessageBoxImage.Error);
}
}