79 lines
2.2 KiB
C#
79 lines
2.2 KiB
C#
namespace System.ComponentModel.DataAnnotations
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{
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[AttributeUsage(
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AttributeTargets.Property | AttributeTargets.Field | AttributeTargets.Parameter,
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AllowMultiple = false)]
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public class GuidNotEmptyAttribute : ValidationAttribute
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{
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public const string DefaultErrorMessage = "The {0} field must not be empty";
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public GuidNotEmptyAttribute() : base(DefaultErrorMessage) { }
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public override bool IsValid(object? value)
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{
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//NotEmpty doesn't necessarily mean required
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if (value is null)
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{
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return true;
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}
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switch (value)
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{
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case Guid guid:
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return guid != Guid.Empty;
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default:
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return true;
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}
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}
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}
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public class NotDefaultAttribute : ValidationAttribute
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{
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public const string DefaultErrorMessage = "The {0} field is is not passed or not set a valid value";
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public NotDefaultAttribute() : base(DefaultErrorMessage) { }
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public override bool IsValid(object? value)
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{
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//NotDefault doesn't necessarily mean required
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if (value is null)
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{
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return true;
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}
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var type = value.GetType();
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if (type.IsValueType)
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{
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var defaultValue = Activator.CreateInstance(type);
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return !value.Equals(defaultValue);
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}
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// non-null ref type
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return true;
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}
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}
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public class CanConvertToTimeAttribute : ValidationAttribute
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{
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public const string DefaultErrorMessage = "The {0} field is is not a valid DateTime value";
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public CanConvertToTimeAttribute() : base(DefaultErrorMessage) { }
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public override bool IsValid(object? value)
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{
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if (value is null)
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{
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return false;
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}
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if (DateTime.TryParse(value.ToString(), out _) == true)
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{
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return true;
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}
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else
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{
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return false;
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}
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}
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}
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}
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