static void Main() { try { using (var client = new SharePointService(@"https://snconceptohg.sharepoint.com/Testumgebung", "_USER_", "_PASSWORD_")) { // Write var entry = new TestListEntry { Title = "Herr", Erstellt_Am = DateTime.Now, Name = "Mustermann" }; var id = client.AddItemToSharePointList(entry, "TestListe"); // Update var uentry = new TestListEntry { ID = id, Title = "Herr", Erstellt_Am = DateTime.Now, Name = "Meier" }; client.UpdateExistingItemOnSharePointList(uentry, "TestListe"); // Read var testList = client.ReadListFromSharePoint <TestListEntry>("TestListe"); foreach (var item in testList) { Console.WriteLine(item.ToString()); } // Delete client.DeleteEntryFromSharePointListById(id, "TestListe"); } } catch (Exception ex) { Console.WriteLine(ex.Message); Console.WriteLine(ex.StackTrace); } finally { Console.ReadLine(); } }