public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
{
string _path = value as string;
if (File.Exists(_path))
{
if (_path.Length > 240) // 规避文件名和路径名过长问题
{
if (!Directory.Exists("./temp"))
{
Directory.CreateDirectory("./temp");
}
FileInfo fi = new FileInfo(_path);
string _tmp = Path.GetFileName(_path);
if (!File.Exists("./temp/" + _tmp))
{
fi.CopyTo("./temp/" + _tmp, true);
}
return(new BitmapImage(new Uri(AppDomain.CurrentDomain.BaseDirectory + @"./temp/" + _tmp, UriKind.RelativeOrAbsolute)));
}
else
{
return(new BitmapImage(new Uri(_path, UriKind.RelativeOrAbsolute)));
}
}
else
{
return(null);
}
}
public override FileInfoBase CopyTo(string destFileName)
{
return(new FileInfoWrapper(FileSystem, instance.CopyTo(destFileName)));
}
