private void CurrentCustomerDetails_Click(object sender, EventArgs e)
{
CustomerEntity customerEntity;
try
{
customerEntity = _filtered ?
_customerViewFilter.CurrentCustomer(_customerBindingSource.Position) :
_customerView.CurrentCustomer(_customerBindingSource.Position);
var displayCustomerForm = new CustomerEntityReadOnlyForm(customerEntity);
try
{
displayCustomerForm.ShowDialog();
}
finally
{
displayCustomerForm.Dispose();
}
}
catch (Exception ex)
{
Console.WriteLine(ex.Message);
}
}
/// <summary>
/// Performs simple validation and setting property values so on any changes
/// they are updated immediately.
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void _customerView_ListChanged(object sender, ListChangedEventArgs e)
{
if (e.PropertyDescriptor != null)
{
//
// Get current customer in current DataGridView row
//
CustomerEntity currentCustomer = _customerView.CurrentCustomer(_customerBindingSource.Position);
Console.WriteLine($" -> {e.ListChangedType.ToString()}");
//
// Assert if there are changes to the current row in the DataGridView
//
if (e.ListChangedType == ListChangedType.ItemChanged)
{
//
// Get data residing in the database table
//
Customers customerItem = CustomersTestOperations
.Context
.Customers
.FirstOrDefault((customer) => customer.CustomerIdentifier == currentCustomer.CustomerIdentifier);
if (customerItem != null)
{
/*
* Did contact first or last name change?
* If so we need to update the contact.
*/
if (e.PropertyDescriptor.DisplayName == "FirstName" || e.PropertyDescriptor.DisplayName == "LastName")
{
customerItem.Contact.FirstName = currentCustomer.FirstName;
customerItem.Contact.LastName = currentCustomer.LastName;
}
var test1 = currentCustomer.CompanyName;
EntityEntry <Customers> customerEntry = CustomersTestOperations.Context.Entry(customerItem);
customerEntry.CurrentValues.SetValues(currentCustomer);
//
// Setup validation on current row data
//
var validation = ValidationHelper.ValidateEntity(currentCustomer);
//
// If there are validation error present them to the user
//
if (validation.HasError)
{
var errorItems = string.Join(Environment.NewLine,
validation.Errors.Select((containerItem) => containerItem.ErrorMessage).ToArray());
MessageBox.Show(errorItems + Environment.NewLine + @"Customer has been reset!!!", @"Corrections needed");
//
// Read current values from database
//
Customers originalCustomer = CustomersTestOperations.CustomerFirstOrDefault(customerItem.CustomerIdentifier);
//
// reset current item both in Customer object and CustomerEntity object
// (there are other ways to deal with this but are dependent on business logic)
//
customerEntry.CurrentValues.SetValues(originalCustomer);
_customerView[_customerBindingSource.Position] = CustomersTestOperations.CustomerByIdentifier(originalCustomer.CustomerIdentifier);
_hasValidationErrors = true;
}
else
{
_hasValidationErrors = false;
CustomersTestOperations.Context.SaveChanges();
}
}
}
}
}
