System.Collections.Specialized.ListDictionary.Add C# (CSharp) Method

        public void Add(object key, object value) { }
        public void Clear() { }

 public virtual void SearchByCityIDAndCountryID(int cityID, int countryID)
 {
     ListDictionary parameters = new ListDictionary();
     parameters.Add(new SqlParameter("@CityID", SqlDbType.Int), cityID);
     parameters.Add(new SqlParameter("@CountryID", SqlDbType.Int), countryID);
     base.LoadFromSql("[" + this.SchemaStoredProcedure + "usp_BlogPage_SearchByCityIDAndCountryID]", parameters);
 }