29 lines
868 B
C#
29 lines
868 B
C#
using System;
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using System.Collections.Generic;
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using System.ComponentModel.DataAnnotations;
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using System.Linq;
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using System.Threading.Tasks;
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namespace MultipleChoiceTrainer.Validation
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{
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public class NotNullOrEmptyAttribute : ValidationAttribute
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{
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public NotNullOrEmptyAttribute()
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{
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}
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protected override ValidationResult IsValid(object value, ValidationContext validationContext)
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{
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if (value == null)
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return new ValidationResult($"{validationContext.DisplayName} darf nicht leer sein!");
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if (string.IsNullOrEmpty(value.ToString()) || string.IsNullOrWhiteSpace(value.ToString()))
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{
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return new ValidationResult($"{validationContext.DisplayName} darf nicht leer sein!");
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}
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return ValidationResult.Success;
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}
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}
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}
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