public void GetCustomers_Test()
        {
            // Arrange
            var viewModel = new CustomerViewModel();

            // Act
            viewModel.GetCustomers();

            // Assert
            Assert.IsNotNull(viewModel.Customers);
            Assert.AreEqual(2, viewModel.Customers.Count());
            Assert.IsTrue(viewModel.Customers.All(c => c.Name.Contains("Fake")));
        }
 private void GetSQLDataButton_Click(object sender, RoutedEventArgs e)
 {
     viewModel.GetCustomers();
 }