40 lines
1.2 KiB
C#
40 lines
1.2 KiB
C#
using Avalonia.Data.Converters;
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using System;
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using System.Collections.Generic;
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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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namespace Plugin.Cowain.Driver.Converters;
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/// <summary>
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/// 将多选集合拼接为字符串（如："系统, 设备"）
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/// </summary>
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public class ListToJoinedStringConverter : IValueConverter
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{
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public object Convert(object? value, Type targetType, object? parameter, System.Globalization.CultureInfo culture)
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{
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// 参数：分隔符（默认逗号+空格）
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string separator = parameter as string ?? ", ";
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// 空值处理
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if (value is not IEnumerable<object> list || !list.Any())
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{
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return "请选择"; // 占位提示
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}
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// 拼接选中项的Name属性
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return string.Join(separator, list
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.Where(item => item != null)
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.Select(item => item.GetType().GetProperty("Name")?.GetValue(item)?.ToString() ?? string.Empty)
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.Where(name => !string.IsNullOrEmpty(name)));
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}
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public object ConvertBack(object? value, Type targetType, object? parameter, System.Globalization.CultureInfo culture)
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{
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// 无需反向转换
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return Avalonia.Data.BindingOperations.DoNothing;
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}
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}
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