Bearbeitung von Fragen

MultipleChoiceTrainer/Models/DataModels/Question.cs

@@ -1,6 +1,8 @@
-using System;
+using MultipleChoiceTrainer.Validation;
+using System;
 using System.Collections.Generic;
 using System.ComponentModel.DataAnnotations;
+using System.Diagnostics.CodeAnalysis;
 using System.Linq;
 using System.Threading.Tasks;
 
@@ -10,12 +12,14 @@ namespace MultipleChoiceTrainer.Models.DataModels
     {
         public int Id { get; set; }
         [Display(Name="Frage")]
+        [NotNullOrEmpty]
         public string Text { get; set; }
 
         public Section Section { get; set; }
         public int SectionId { get; set; }
 
         [Display(Name = "Antwortmöglichkeiten")]
+        [NotEmptyChoiceCollection()]
         public List<Choice> Choices { get; set; }
 
         public ICollection<Answer> Answers { get; set; } = new HashSet<Answer>();