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TypeOfLessonAdd.xaml.cs
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using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Shapes;
using MahApps.Metro.Controls;
using HelpMe;
using MahApps.Metro.Controls.Dialogs;
namespace SampleApp
{
/// <summary>
/// Логика взаимодействия для GroupAdd.xaml
/// </summary>
public partial class TypeOfLessonAdd : MetroWindow
{
SchoolEntities2 database = new SchoolEntities2();
public TypeOfLessonAdd()
{
InitializeComponent();
gridType.ItemsSource = database.TypeOfLesson.ToList();
}
private void btn_Apply_Click(object sender, RoutedEventArgs e)
{
string line = txtInput.Text;
if (line == "")
{
MessageBox.Show("Ошибка", "Пустое поле ввода!");
return;
}
if (line.Length < 5)
{
MessageBox.Show("Ошибка", "Вы вводите не тип занятия!");
}
else
{
try
{
var item = (from q in database.TypeOfLesson
where q.Type == txtInput.Text
select q).FirstOrDefault();
if (item == null)
{
TypeOfLesson a = new TypeOfLesson();
a.Type = txtInput.Text;
database.TypeOfLesson.Add(a);
database.SaveChanges();
gridType.ItemsSource = null;
gridType.ItemsSource = database.TypeOfLesson.ToList();
MessageBox.Show("Успех!", "Сообщение");
}
else
{
MessageBox.Show("Такой тип уже есть!", "Ошибка");
}
}
catch
{
MessageBox.Show("Ошибка", "Такой тип уже есть!");
}
}
}
private void btn_Cancel_Click(object sender, RoutedEventArgs e)
{
WindowAdd add = new WindowAdd();
add.Show();
Close();
}
private void btn_Delete_Click(object sender, RoutedEventArgs e)
{
try
{
TypeOfLesson gr = gridType.SelectedValue as TypeOfLesson;
database.Database.ExecuteSqlCommand("DELETE FROM TypeOfLesson WHERE ID=" + gr.ID);
MessageBox.Show("Сообщение", "Успех!");
gridType.ItemsSource = null;
gridType.ItemsSource = database.TypeOfLesson.ToList();
}
catch
{
MessageBox.Show("Ошибка", "Вы не выбрали тип занятия!");
}
}
private void txtInput_PreviewTextInput(object sender, TextCompositionEventArgs e)
{
char s = Convert.ToChar(e.Text);
if (!(s < '0' || s > '9')) e.Handled = true;
}
}
}