40 lines
1.5 KiB
C#
40 lines
1.5 KiB
C#
using System.Globalization;
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using System.IO;
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using System.Windows.Data;
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using System.Windows.Media.Imaging;
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namespace WPF_25_TreeView.Convert;
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[ValueConversion(typeof(string), typeof(BitmapImage))]
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public class HeaderToImageConverter : IValueConverter
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{
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public static readonly HeaderToImageConverter Instance = new();
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public object? Convert(object? value, Type targetType, object? parameter, CultureInfo culture)
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{
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var path = (string)value!;
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if (string.IsNullOrEmpty(path)) return null;
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// 判断是否是文件夹
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// // 方法1：直接使用 Directory.Exists（推荐大多数情况）
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// var isDirectory = Directory.Exists(path);
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// // 方法2：检查文件属性（处理符号链接等特殊情况）
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// var isDirectory = File.GetAttributes(path).HasFlag(FileAttributes.Directory);
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var isDirectory = Directory.Exists(path) ||
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(File.GetAttributes(path) & FileAttributes.Directory) == FileAttributes.Directory;
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var extension = Path.GetExtension(path).ToLower();
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var image = isDirectory ? "Assets/folder.png" :
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extension is ".jpg" or ".jpeg" ? "Assets/jpg.png" :
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extension is ".java" ? "Assets/code.ico" :
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extension is ".ogg" ? "Assets/ogg.ico" :
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"Assets/file.png";
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return new BitmapImage(new Uri($"pack://application:,,,/{image}"));
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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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return new object();
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}
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} |