protected override void EditItem(BaseRowViewerViewModel viewModel)
{
var categoryRowViewerViewModel = viewModel as CategoryRowViewerViewModel;
if (categoryRowViewerViewModel.IsEditable)
{
// Validate
if (string.IsNullOrEmpty(categoryRowViewerViewModel.EditedName) ||
string.IsNullOrWhiteSpace(categoryRowViewerViewModel.EditedName))
{
MessageBox.Show("Category must have a name", "Invalid data", MessageBoxButton.OK, MessageBoxImage.Error);
return;
}
// Edit
categoryRowViewerViewModel.Name = categoryRowViewerViewModel.EditedName;
Category category = new Category(categoryRowViewerViewModel.ID, categoryRowViewerViewModel.Name);
categoryRowViewerViewModel.IsEditable = false;
category.Edit();
ApplicationDirector.UpdateCategories();
}
else
{
categoryRowViewerViewModel.IsEditable = true;
}
}
/// <summary>
/// Attempts to add a new category to the database
/// </summary>
private void AddCategory()
{
// Validate data
if (Category_ID == 0L || Category_ID == null)
{
MessageBox.Show("Category ID shouldn't be zero", "Invalid data", MessageBoxButton.OK, MessageBoxImage.Error);
return;
}
if (string.IsNullOrEmpty(CategoryName) || string.IsNullOrWhiteSpace(CategoryName))
{
MessageBox.Show("Category must have a name", "Invalid data", MessageBoxButton.OK, MessageBoxImage.Error);
return;
}
Category category = new Category(Category_ID.Value, CategoryName);
if (category.Add())
{
MessageBox.Show("Category was added", "Information", MessageBoxButton.OK, MessageBoxImage.Information);
NotifyObservers();
Category_ID = null;
CategoryName = null;
}
else
{
MessageBox.Show("There is already a category with the same ID", "Information", MessageBoxButton.OK, MessageBoxImage.Error);
}
ApplicationDirector.UpdateCategories();
}
/// <summary>
/// Deletes the specified item from the list
/// </summary>
/// <param name="viewModel">The view model of the item to delete</param>
protected override void DeleteItem(BaseRowViewerViewModel viewModel)
{
// Delete from the items list
Items.Remove(viewModel);
// Delete from the database
SqlParameter[] sqlParameters = new SqlParameter[1];
sqlParameters[0] = new SqlParameter("@Category_ID", SqlDbType.Int);
sqlParameters[0].Value = ((CategoryRowViewerViewModel)viewModel).ID;
DataConnection.ExcuteCommand("Delete_Category_Procedure", sqlParameters);
ApplicationDirector.UpdateCategories();
}