using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Text.RegularExpressions;
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.Navigation;
using System.Windows.Shapes;

namespace WpfApp1
{
    public partial class MainWindow : Window
    {
        public MainWindow()
        {
            InitializeComponent();
        }

        private void Transfer_OnClick(object sender, RoutedEventArgs e)
        {

        }

        private void Clear_OnClick(object sender, RoutedEventArgs e)
        {
            Cel.Clear();
        }

        private void Quiet_OnClick(object sender, RoutedEventArgs e)
        {
            Application.Current.Shutdown();
        }

        private void Cel_OnPreviewTextInput(object sender, TextCompositionEventArgs e)
        {
            Regex regex = new Regex("[^0-9,]+");
            e.Handled = regex.IsMatch(e.Text);
        }
    }
}