public void DeleteLibraryQuestion(Int32 questionId)
{
var existingItem = LibrariesDal.GetLibraryQuestionById(this.AccessTokenId, questionId);
if (existingItem == null)
{
throw new VLException(SR.GetString(SR.There_is_no_item_with_id, "LibraryQuestion", questionId));
}
#region SecurityLayer
if (this.PrincipalType == Core.PrincipalType.SystemUser)
{
CheckPermissions(VLPermissions.ManageSystem, VLPermissions.Developer, VLPermissions.SystemService, VLPermissions.ManageBuidingBlocks);
}
else
{
throw new VLAccessDeniedException();
}
#endregion
//Δεν μπορούμε να διαγράψουμε την συγκεκριμένη ερώτηση εάν έχει ήδη χρησιμοποιηθεί:
if (SurveysDal.GetQuestionsForLibraryQuestionCount(this.AccessTokenId, existingItem.QuestionId) > 0)
{
throw new VLException("You cannot delete this LibraryQuestion! It is been used by Survey Questions!");
}
LibrariesDal.DeleteLibraryQuestion(this.AccessTokenId, questionId);
}
