20 lines
614 B
C#
20 lines
614 B
C#
using System.ComponentModel.DataAnnotations;
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namespace ShrlAlgo.Toolkit.Mvvm.Attributes;
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[AttributeUsage(AttributeTargets.Property | AttributeTargets.Field | AttributeTargets.Parameter)]
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public sealed class MaximumAttribute : ValidationAttribute
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{
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public MaximumAttribute(double maxValue = 0)
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{
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MaxValue = maxValue;
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}
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public double MaxValue { 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 <= MaxValue ? ValidationResult.Success : new ValidationResult("输入值超出范围");
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}
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}
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