public void DeleteLibraryQuestionCategory(Int16 categoryId)
{
var existingItem = LibrariesDal.GetLibraryQuestionCategoryById(this.AccessTokenId, categoryId);
if (existingItem == null)
{
throw new VLException(SR.GetString(SR.There_is_no_item_with_id, "LibraryQuestionCategory", categoryId));
}
//Can we delete the LibraryQuestinCategory?
if (existingItem.IsBuiltIn)
{
throw new VLException(SR.GetString(SR.You_cannot_delete_builtin, "LibraryQuestionCategory"));
}
var _total = LibrariesDal.GetLibraryQuestionsCount(this.AccessTokenId, categoryId);
if (_total == 1)
{
throw new VLException(string.Format("You cannot delete library category '{0}'. There is one question depending on it!", existingItem.Name));
}
else if (_total > 1)
{
throw new VLException(string.Format("You cannot delete library category '{0}'. There are questions depending on it!", existingItem.Name));
}
LibrariesDal.DeleteLibraryQuestionCategory(this.AccessTokenId, existingItem.CategoryId);
}