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    <p>It was for joining </p> <pre><code>Bitmap first = new Bitmap (picturebox1.Image); Bitmap second = new Bitmap (picturebox2.Image); Bitmap result = new Bitmap (first.Width+first.Width, first.Height); Graphics g = Graphics.FromImage(result); g.DrawImageUnscaled(first, 0, 0); g.DrawImageUnscaled(second,first.Width, 0); </code></pre> <p>Try this for merging one on top another . set alpha by yourself ( red: U can use BitMap.MakeTransParent if u not want alpha)</p> <pre><code> public Bitmap SetImageOpacity(Image image, float opacity) { try { //create a Bitmap the size of the image provided Bitmap bmp = new Bitmap(image.Width, image.Height); //create a graphics object from the image using (Graphics gfx = Graphics.FromImage(bmp)) { //create a color matrix object ColorMatrix matrix = new ColorMatrix(); //set the opacity matrix.Matrix33 = opacity; //create image attributes ImageAttributes attributes = new ImageAttributes(); //set the color(opacity) of the image attributes.SetColorMatrix(matrix, ColorMatrixFlag.Default, ColorAdjustType.Bitmap); //now draw the image gfx.DrawImage(image, new Rectangle(0, 0, bmp.Width, bmp.Height), 0, 0, image.Width, image.Height, GraphicsUnit.Pixel, attributes); } return bmp; } catch (Exception ex) { return null; } } private void button1_Click(object sender, EventArgs e) { Bitmap first = new Bitmap(pictureBox1.Image); Bitmap second = SetImageOpacity(pictureBox2.Image, 0.5f); //Bitmap result = new Bitmap(first.Width, first.Height); //fix : Bitmap result = new Bitmap(Math.Max(first.Width,second.Width), Math.Max(first.Height,second.Height)); Console.WriteLine(first.Width); Graphics g = Graphics.FromImage(result); g.DrawImageUnscaled(first, 0, 0); g.DrawImageUnscaled(second, 0, 0); pictureBox3.Image = result; result.Save("result.jpg" ); } } } </code></pre> <p><strong>And Coming For watermark why not you want to use Drawstring with alpha here is article for all these <a href="http://www.codeproject.com/Articles/5034/How-to-implement-Alpha-blending" rel="nofollow">http://www.codeproject.com/Articles/5034/How-to-implement-Alpha-blending</a></strong></p>
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    1. COisn't the 2nd pic will be placed beside the first one?
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    2. CO@user1442032 How u wanted ?
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    3. CO@user1442032 check see if it was what u wanted ?
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