39 lines
1.2 KiB
C#
39 lines
1.2 KiB
C#
using Avalonia.Data.Converters;
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using System.Globalization;
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namespace Cowain.Base.Converters;
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public class StringToUIntConverter : IValueConverter
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{
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/// <summary>
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/// 将数据模型中的值转换为字符串，流向 UI 元素时
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/// </summary>
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/// <param name="value"></param>
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/// <param name="targetType"></param>
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/// <param name="parameter"></param>
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/// <param name="culture"></param>
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/// <returns></returns>
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public object? Convert(object? value, Type targetType, object? parameter, CultureInfo culture)
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{
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return value ?? string.Empty;
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}
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/// <summary>
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/// 用户在 UI 中输入或修改了某些内容，并且这些更改需要反映到数据模型时
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/// </summary>
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/// <param name="value"></param>
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/// <param name="targetType"></param>
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/// <param name="parameter"></param>
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/// <param name="culture"></param>
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/// <returns></returns>
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public object? ConvertBack(object? value, Type targetType, object? parameter, CultureInfo culture)
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{
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if (value != null && uint.TryParse(value.ToString(), out var intValue))
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{
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return intValue;
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}
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return null;
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}
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}
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