/// <summary>
/// Here we pass in a strong typed class which represents the current row in the master
/// DataGridView and also a list of valid contact titles.
/// </summary>
/// <param name="pCustomerRow"></param>
/// <param name="pTitles"></param>
public CustomerEditForm(NorthWindDataSet.CustomersRow pCustomerRow, List <string> pTitles)
{
InitializeComponent();
customerRow = pCustomerRow;
companyNameTextBox.Text = customerRow.CompanyName;
contactNameTextBox.Text = customerRow.ContactName;
titleComboBox.DataSource = pTitles;
titleComboBox.SelectedIndex = titleComboBox.FindString(customerRow.ContactTitle);
}
/// <summary>
/// Here when the user presses ENTER we display a modal form with
/// the current row data.
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void CustomersDataGridView_KeyDown(object sender, KeyEventArgs e)
{
/*
* We are on a new row, nothing to edit.
* If you wanted this could be a starting point to add a new row
* yet there are better ways, for starters using the add button in
* the BindingNavigator.
*/
if (customersDataGridView.CurrentRow.IsNewRow)
{
return;
}
if (e.KeyData == Keys.Enter)
{
e.Handled = true;
var id = ((DataRowView)customersBindingSource.Current).Row.Field <int>("CustomerIdentifier");
NorthWindDataSet.CustomersRow cust = northWindDataSet.Customers.FirstOrDefault(c => c.CustomerIdentifier == id);
var f = new CustomerEditForm(cust, contactTitles);
try
{
if (f.ShowDialog() != DialogResult.OK)
{
northWindDataSet.Customers.FirstOrDefault(c => c.CustomerIdentifier == id).RejectChanges();
}
else
{
// nothing required here. If you were thinking validation should be done here, nope
// validation should be in the edit form, see my comments in the save button for the
// edit form.
}
}
finally
{
f.Dispose();
}
}
}
