Looking at your code I’m afraid I have to say: This is all wrong. Sorry to be so blunt, but you must never use control.CreateGraphics!! The first thing to do is to throw away the Graphics objgraphics object. It is (almost) always wrong to store a Graphics object! Instead, you have to use the one … Read more
Assuming there are no other delays in your code that would prevent the UI thread from re-entering the message loop so that the OnPaint() method can be called: your Paint event handler gets called after PictureBox has drawn the Image. It isn’t yet visible, PB uses double-buffering. That image gets expensive to draw when it … Read more
You never uploaded the image contents to the database. That’s just the file name. Say, as an example, that you have a file path to work with (it seems you do, given the question’s contents). In your application, you would upload this to the database following this format: byte[] image = File.ReadAllBytes(“D:\\11.jpg”); SqlCommand sqlCommand = … Read more
You need to address two issues: Clip the Graphics area to the actual Image instead of the whole PictureBox.ClientArea Scale the coordinates of the mouse events to the actual image when receiving and recording them and back again when you use them to draw in the Paint event. For both we need to know the … Read more
I don’t think there is a real memory leak. The problem is that you don’t dispose the old bitmap, it is up to the GC to clean the stuff. But there is no deterministic way to say when this will happen. So i think if you’re going to loop through a lot of pictures, you’ll … Read more
You have different options: You can draw a resizable frame on the picture box You can create a resizable control and add it to picture box In this answer, I’ve taken the second option to be able to use built-in sizing features of the controls. Here is a screen capture which shows how it looks … Read more
The problem: A Bitmap, with a size that is much smaller than the container used to show it, is blurred and the otherwise sharp edges of the well-defined areas of color are unceremoniously blended. This is just the result of a Bilinear filter applied to a really small image (a few pixels) when zoomed in. … Read more
Try this pictureBox.Image.Save(@”Path”,ImageFormat.Jpeg);
Make sure the image in pictureBox3 is transparent. Set the BackColor to transparent. In code, set the Parent property of the pictureBox3 to be pictureBox2. Adjust the Location coordinates of pictureBox3 since they will be relative to the coordinates of pictureBox2 once you’ve changed the Parent. private void Form1_Load(object sender, EventArgs e) { pictureBox3.Parent = … Read more
If you want to overlay images over images (and not images over form), this would make the trick: overImage.Parent = backImage; overImage.BackColor = Color.Transparent; overImage.Location = thePointRelativeToTheBackImage; Where overImage and backImage are PictureBox with png (with transparent background). This is because, as said before, the transparency of an image is rendered using the back color … Read more