draw random graphical images in c# windows application

Question

Hi, draw random graphical images in c# windows application

Amit Choudhary · Answer

hi friend, you have to customize the code some what by urself.. on selected index changed event of Dropdown you can provide the seed for random no. and generate random no. for near range of the selected points. i hope your problem will get solved.

Amit Choudhary · Answer

hi friend, Please do mark my answer it'll help me get some point when you get help then please do favor to mark as answer. Best Regards

kannan s · Answer

Thanks.............................

kannan s · Answer

hi, i need to change points position based on selected value from dropdownlist..

Amit Choudhary · Answer

hi friend, Try following code i have commented where to generate the pixels and where to generate circle but both are random to fill the all image area. Graphics xGraph; int k; int r; int x, y; Bitmap DrawArea; DrawArea = new Bitmap(Width,Height,System.Drawing.Imaging.PixelFormat.Format24bppRgb); // Creating points on Bitmap for (int x = 0; x { for (int y = 0; y { int num = r.Next(0, 256); DrawArea.SetPixel(x, y, Color.FromArgb(255, num, num, num)); } } xGraph = Graphics.FromImage(DrawArea); Random rnd = new Random((int)DateTime.Now.Ticks); // seeded with ticks Pen myPen = new Pen(Color.Red); // Drawing random circles in the bitmap image area for (k = 1; k { myPen.Color = Color.FromArgb( (rnd.Next(0, 255)), (rnd.Next(0, 255)), (rnd.Next(0, 255))); r = rnd.Next(0, (this.Width / 2)); x = rnd.Next(0, this.Width); y = rnd.Next(0, this.Height); xGraph.DrawEllipse(myPen, x - r, y - r, r, r); } xGraph.DrawImage(DrawArea, 0, 0, DrawArea.Width, DrawArea.Height); // or you can save it to your storage disk. DrawArea.Save("C:\abc.bmp"); xGraph.Dispose(); DrawArea.Dispose(); Hope it helps you. Don't forget to mark as answer.

kannan s · Answer

hi, like points ,and circles ..but the position of points should change based on the input

Amit Choudhary · Answer

hi friend, are you trying to made some captcha control type of thing?? what kind of graphical shapes you want to draw??