37 lines
1.1 KiB
C#
37 lines
1.1 KiB
C#
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using System;
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using System.Collections.Generic;
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using System.Globalization;
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using System.Linq;
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using System.Text;
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using System.Threading.Tasks;
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using System.Windows;
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using System.Windows.Controls;
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using System.Windows.Input;
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using MessageBox = MaxwellControl.Controls.MessageBox;
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namespace MainShell.Common.ControlAttribute
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{
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public class NumericValidationRule : ValidationRule
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{
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public override ValidationResult Validate(object value, CultureInfo cultureInfo)
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{
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string strValue = value as string;
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if (string.IsNullOrEmpty(strValue))
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{
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// 空值是允许的，如果需要必填，则返回 new ValidationResult(false, "不能为空");
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return new ValidationResult(false, "不能为空");
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}
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// 尝试将字符串转换为double
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if (double.TryParse(strValue, out _))
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{
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return ValidationResult.ValidResult;
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}
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else
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{
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return new ValidationResult(false, "请输入有效的数字。");
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}
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}
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}
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}
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