38 lines
1.0 KiB
C#
38 lines
1.0 KiB
C#
using System;
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using System.Globalization;
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using Avalonia.Data.Converters;
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namespace DispenserUI.ViewModels.Converter;
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/// <summary>
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/// 对象的数值转换为指定精度的字符串
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/// </summary>
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public class DoubleToPrecisionConverter : IValueConverter
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{
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public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
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{
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int digits = 3;
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if (int.TryParse(parameter as string, out int _digits))
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{
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digits = _digits;
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}
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return value switch
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{
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// 确保输入值是浮点数
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int => value,
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double val => Math.Round(val, digits),
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_ => value
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};
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}
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public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
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{
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// 从字符串转换回浮点数
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if (value is string stringValue && double.TryParse(stringValue, out var result)) return result;
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// 如果转换失败，则返回0
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return 0d;
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}
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} |