private void ButtonFind_Click(object sender, RoutedEventArgs e)
 {
     if (this.RadioButtonFindByName.IsChecked == true)
     {
         using (var db = new Entities())
         {
             var query = from animal in db.AnimalSet
                         where animal.Name == this.TextBoxNameFind.Text
                         select animal;
             if (query.Count<AnimalSet>() == 0)
             {
                 MessageBox.Show("Тварин з таким іменем не знайдено.");
                 this.DataGridAnimals.ItemsSource = null;
             }
             else
             {
                 List<AnimalSet> findedAnimal = new List<AnimalSet>();
                 foreach (var item in query)
                 {
                     findedAnimal.Add(item);
                 }
                 this.DataGridAnimals.ItemsSource = findedAnimal;
                 this.DataGridAnimals.Items.Refresh();
             }
         }
     }
     else
     {
         if (this.RadioButtonFindByGreed.IsChecked == true)
         {
             using (var db = new Entities())
             {
                 var query = from animal in db.AnimalSet
                             where animal.Breed == this.TextBoxBreedFind.Text
                             select animal;
                 if (query.Count<AnimalSet>() == 0)
                 {
                     MessageBox.Show("Тварин з такою породою не знайдено.");
                     this.DataGridAnimals.ItemsSource = null;
                 }
                 else
                 {
                     List<AnimalSet> findedAnimal = new List<AnimalSet>();
                     foreach (var item in query)
                     {
                         findedAnimal.Add(item);
                     }
                     this.DataGridAnimals.ItemsSource = findedAnimal;
                     this.DataGridAnimals.Items.Refresh();
                 }
             }
         }
         else
         {
             if (this.RadioButtonFindBySex.IsChecked == true)
             {
                 using (var db = new Entities())
                 {
                     var query = from animal in db.AnimalSet
                                 where animal.Sex == this.ComboBoxSexFind.Text
                                 select animal;
                     if (query.Count<AnimalSet>() == 0)
                     {
                         MessageBox.Show("Тварин з такою статтю не знайдено.");
                         this.DataGridAnimals.ItemsSource = null;
                     }
                     else
                     {
                         List<AnimalSet> findedAnimal = new List<AnimalSet>();
                         foreach (var item in query)
                         {
                             findedAnimal.Add(item);
                         }
                         this.DataGridAnimals.ItemsSource = findedAnimal;
                         this.DataGridAnimals.Items.Refresh();
                     }
                 }
             }
         }
     }
 }
 private void buttonSave_Click(object sender, RoutedEventArgs e)
 {
     using (var db = new Entities())
     {
         for (int i = 0; i < amount; i++)
         {
             var animalToAdd = new AnimalSet { Name = animal[i].Name, Breed = animal[i].Breed, Sex = animal[i].Sex};
             db.AnimalSet.Add(animalToAdd);
             db.SaveChanges();
         }
     }
     animal.Clear();
     amount = 0;
     this.DataGridAnimals.ItemsSource = null;
 }