public override object ConvertFromInvariantString(string value)
{
if (value != null)
{
Uri uri;
return(Uri.TryCreate(value, UriKind.Absolute, out uri) && uri.Scheme != "file" ? MediaSource.FromUri(uri) : MediaSource.FromFile(value));
}
throw new InvalidOperationException(string.Format("Cannot convert \"{0}\" into {1}", value, typeof(MediaSource)));
}