public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
{
if (value == null) return null;
try
{
if (value is string)
{
var path = (string)value;
var ext = Path.GetExtension(path);
if (string.IsNullOrWhiteSpace(ext)) return null;
BitmapSource icon;
if (!_icon.TryGetValue(ext, out icon))
{
icon = IconUtilities.FileAssociatedImage(ext, false, false);
if (icon.CanFreeze) icon.Freeze();
_icon[ext] = icon;
}
return icon;
}
else if (value is Seed)
{
Seed seed = (Seed)value;
if (string.IsNullOrWhiteSpace(seed.Name)) return null;
var ext = Path.GetExtension(seed.Name);
if (string.IsNullOrWhiteSpace(ext)) return null;
BitmapSource icon;
if (!_icon.TryGetValue(ext, out icon))
{
icon = IconUtilities.FileAssociatedImage(ext, false, false);
if (icon.CanFreeze) icon.Freeze();
_icon[ext] = icon;
}
return icon;
}
else if (value is Box)
{
return _boxIcon;
}
}
catch (Exception)
{
}
return null;
}
static ObjectToImageConverter()
{
var ext = ".box";
var icon = IconUtilities.FileAssociatedImage(ext, false, false);
if (icon.CanFreeze) icon.Freeze();
_boxIcon = icon;
}