private void FilterDataGrid()
{
IEnumerable <BloodDonation> temporaryFilteredDonations = Donations.AsEnumerable();
var bloodType = BloodTypeComboBox.SelectedItem;
var donorPesel = DonorPeselTextBox.Text;
var bloodTakerPesel = BloodTakerTextBox.Text;
if (bloodType != null)
{
temporaryFilteredDonations =
temporaryFilteredDonations.Where(x => x.BloodType.ToString() == bloodType.ToString());
}
if (donorPesel != "")
{
temporaryFilteredDonations =
temporaryFilteredDonations.Where(x => x.Donor.Pesel.Contains(donorPesel));
}
if (bloodTakerPesel != "")
{
temporaryFilteredDonations =
temporaryFilteredDonations.Where(x => x.BloodTaker.Pesel.Contains(bloodTakerPesel));
}
FilteredDonations.Clear();
foreach (var temporaryFilteredDonation in temporaryFilteredDonations)
{
FilteredDonations.Add(temporaryFilteredDonation);
}
}