public void PlaceBorrowExecute(DataGrid _Customers)
{
Customer SelectedCustomer;
// Try casting SelectedItem to Customer - if it fails, there was nothing selected
try
{
SelectedCustomer = (Customer)_Customers.SelectedItem;
if (SelectedCustomer == null)
{
throw new Exception();
}
}
catch (Exception)
{
Message = "Uh Oh! Something went wrong.\nMake sure you've selected a Customer!";
OnPropertyChanged("Message");
return;
}
// Create new Borrow
Borrow NewBorrow = new Borrow()
{
FKey_Book = _SelectedBook.PKey,
FKey_Customer = SelectedCustomer.PKey,
DateOfBorrow = DateTime.Now,
DateOfReturn = ReturnDate,
Returned = false
};
// Insert new Borrow into Database
if (!Access.InsertBorrow(NewBorrow))
{
Message = "Uh Oh! Something went wrong.\nCouldn't insert new Borrow into DB!";
OnPropertyChanged("Message");
return;
}
else
{
BorrowWindow.Close();
}
}
private void ReturnBookExecute(object _DataGrids)
{
var Elements = (object[])_DataGrids;
DataGrid _Borrows = (DataGrid)Elements[0];
DataGrid _Books = (DataGrid)Elements[1];
dynamic Data = (dynamic)_Borrows.SelectedItem;
Borrow _Borrow = null;
// Try casting SelectedItem to Borrow - if it fails, there was nothing selected
try
{
_Borrow = Data._Borrow;
}
catch (Exception)
{
Message = "Uh Oh! Something went wrong. Make sure you've selected a desired Borrow to return!";
OnPropertyChanged("Message");
return;
}
if (!Access.ReturnBorrow(_Borrow))
{
Message = "Uh Oh! Something went wrong. Couldn't update Borrow as returned in the DB!";
OnPropertyChanged("Message");
return;
}
else
{
Message = "";
OnPropertyChanged("Message");
// TODO: Refactor to single Item update... (Needs new StoredProcedure)
UpdateBorrows();
UpdateBooks();
_Borrows.ItemsSource = null;
_Books.ItemsSource = null;
_Borrows.ItemsSource = Borrows;
_Books.ItemsSource = Books;
}
}