// if the user confirm the changes
private void btnConfirm_Click(object sender, EventArgs e)
{
// check if the new shipped date is valid (in range) or it is null
if (IsValidData(DTPShippedDate) || (DTPShippedDate.Value == null))
{
// creating a new order and setting its properties
Order newOrder = new Order();
GetNewOrder(newOrder);
// if the user wants to delete the shipped date
if (delete == true)
{
newOrder.ShippedDate = null;
}
else
{
// the new order has a different shipped date
newOrder.ShippedDate = Convert.ToDateTime(DTPShippedDate.Value);
}
// try to update data in the database
try
{
if (!OrderDB.UpdateOrder(newOrder, order))
{
MessageBox.Show("Another user has updated or " +
"deleted that customer.", "Database Error");
this.DialogResult = DialogResult.Retry;
}
else // successfully updated
{
order.ShippedDate = newOrder.ShippedDate;
this.DialogResult = DialogResult.OK;
}
}
catch (Exception ex)
{
MessageBox.Show(ex.Message, ex.GetType().ToString());
}
}
}
/// <summary>
/// Save changes to the shipping date for this order
/// </summary>
private void btnSave_Click(object sender, EventArgs e)
{
// first, have to check if the date is null or invalid (treat as null) before trying to parse it
DateTime newDate; // somewhere to put the result
bool parseResult = DateTime.TryParse(txtShippedDate.Text, out newDate);
if (parseResult) // if the parse was successful (it's a legitimate date), compare against the other dates to make sure it's between them
{
if ((CurrentOrder.OrderDate != null && CurrentOrder.OrderDate > newDate) || (CurrentOrder.RequiredDate != null && CurrentOrder.RequiredDate < newDate))
{
MessageBox.Show("Shipping Date must be later than order date and earlier than Required date"); // notify the user
txtShippedDate.Text = ""; // clear out the bad date and focus the field for correction
txtShippedDate.Focus();
return; // break out of this method entirely so they can fix it
}
}
try
{
if (parseResult) // if the parse worked (and it was in the correct range), send the new date
{
OrderDB.UpdateOrder(CurrentOrder, newDate);
}
else // if it's blank or isn't a date
{
OrderDB.UpdateOrder(CurrentOrder, null);
}
// if we're still here and nothing messed up, close this and go back to the order list
DialogResult = DialogResult.OK;
this.Close();
}
catch (Exception ex)
{
MessageBox.Show("Error saving shipping date: " + ex.Message, ex.GetType().ToString());
}
}