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using System;
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using System.Collections;
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using System.ComponentModel.DataAnnotations;
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namespace EPAServeur.Attributes
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{
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/// <summary>
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/// Specifies that a collection of a specified type must have at least one element.
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/// </summary>
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[AttributeUsage(AttributeTargets.Property | AttributeTargets.Field | AttributeTargets.Parameter, AllowMultiple = false)]
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public sealed class CannotBeEmptyAttribute : RequiredAttribute
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{
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public override bool IsValid(object value)
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{
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var list = value as IEnumerable;
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return list != null && list.GetEnumerator().MoveNext();
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}
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}
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}
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