C#

public static IReadOnlyList<Point> GetSurroundingCloud(this IEnumerable<Point> _points, int _maximumDistance)
{
    ISet<Point> result = new HashSet<Point>();
    foreach (Point p in _points)
    {
        for (int x = 0; x <= _maximumDistance; x++)
        {
            for (int y = 0; y + x <= _maximumDistance; y++)
            {
                result.Add(new Point(p.X - x, p.Y - y));
                result.Add(new Point(p.X - x, p.Y + y));
                result.Add(new Point(p.X + x, p.Y - y));
                result.Add(new Point(p.X + x, p.Y + y));
            }
        }
    }
    return result.ToList();
}

I have Pdf template with some background design and logo, so we need to pass the data dynamically in to that pdf template using "itextsharp" library. So when we pass the data to the template, it’s overriding the template backgroud design and showing the plain text that we have passed to the 
Template instead of merging with the Template.
Any ideas or suggestions to achieve the functionality would be appreciated.

private bool UpdateMetadataInPlace()
        {
            bool traySaveSuccessful = false;
            string tempPath = PutTogetherTemporaryFilePath();

            // Copy original file to temp file and work on this because in place metadata update can corrupt file if it fails.
            if (File.Exists(tempPath))
            {
                File.Delete(tempPath);
            }
            File.Copy(imageFilePath, tempPath);

            using (Stream jpgFileStream = File.Open(tempPath, FileMode.Open, FileAccess.ReadWrite))
            {
                BitmapDecoder jpgDecoder = BitmapDecoder.Create(jpgFileStream, BitmapCreateOptions.None, BitmapCacheOption.None);

                if (jpgDecoder.Frames[0] != null && jpgDecoder.Frames[0].Metadata != null)
                {
                    InPlaceBitmapMetadataWriter metadataJpgWriter = jpgDecoder.Frames[0].CreateInPlaceBitmapMetadataWriter();

                    metadataJpgWriter.SetQuery("System.Keywords", Keywords.ToArray());

                    if (metadataJpgWriter.TrySave())
                    {
                        traySaveSuccessful = true;
                    }
                }
            }

            if (traySaveSuccessful == true)
            {
                File.Delete(imageFilePath);
                File.Move(tempPath, imageFilePath);
            }
            else
            {
                File.Delete(tempPath);
            }

            return traySaveSuccessful;
        }

private void OnFormActivated(object sender, EventArgs e)
{
	panel1.AutoScrollPosition = panelRect.Location; // panelRect is the location saved
}