public CampaignSetupModel()
 {
     ProductGroup = new ProductGroupModel();
     AdModelProp = new AdModel();
     BillingLaunch = new BillingLaunchModel();
     // for categories
     AllCategories = new List<CategoriesModel>();
     SelectedCategories = new List<CategoriesModel>();
     CategoryIds = new List<int>();
     // for keywords
     AllKeywords = new List<KeywordsModel>();
     SelectedKeywords = new List<KeywordsModel>();
     KeywordIds = new List<int>();
     
 }
 public CampaignSetupModel()
 {
     ProductGroup = new ProductGroupModel();
     AdModelProp = new AdModel();
     BillingLaunch = new BillingLaunchModel();
     // for categories
     AllCategories = new List<CategoriesModel>();
     SelectedCategories = new List<CategoriesModel>();
     CategoryIds = new List<int>();
     // for keywords
     AllKeywords = new List<KeywordsModel>();
     AllKeywordProbabilityObjects = new List<KeywordProbabilityObject>();
     SelectedKeywords = new List<KeywordsModel>();
     KeywordIds = new List<int>();
     SiteLinks = new List<SiteLink>();
     Configuration = new SemplestModel.Semplest().Configurations.Single();
 }