20 lines
651 B
C#
20 lines
651 B
C#
using System.ComponentModel.DataAnnotations;
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namespace ShrlAlgoToolkit.Mvvm.Attributes;
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[AttributeUsage(AttributeTargets.Property | AttributeTargets.Field | AttributeTargets.Parameter)]
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public sealed class MinimumAttribute : ValidationAttribute
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{
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public MinimumAttribute(double minValue = 0)
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{
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MinValue = minValue;
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}
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public double MinValue { get; }
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protected override ValidationResult IsValid(object value, ValidationContext validationContext)
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{
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return double.TryParse(value.ToString(), out var d) && d >= MinValue ? ValidationResult.Success : new ValidationResult($"最小值应为{MinValue}");
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}
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}
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