system.drawing

I have a form that has 2 panels. I'm trying to save the contents of Panel2 as an image. I saw a thread that talked about using the screen capture to do this, but I can't find the thread anymore. Also read about using the DrawToBitMap method, but it's from visual studio 2005 info, not sure if it's the most current or suitable solution for this. So what do you recommend for saving my Panel2 as a picture, preferably a jpg? UPDATE: I implemented the code recommended below for the DrawToBitMap, but it saves half of my panel2 (the left half if that makes a difference). Because it saved half my

I am currently working with Monotouch. I have an application which opens the camera and then needs to process the image that is currently being captured. I am using code which is very similar to https://github.com/reinforce-lab/com.ReinforceLab.MonoTouch.Controls/tree/master/VideoCaptureSample/ The difference of interest between my code and theirs is that in OverlayView.cs which is placed over my UIImagePickerController however, I have the following code: using (var screenImage = CGImage.ScreenImage.WithImageInRect(Frame)) { _imageView = UIImage.FromImage(screenImage); Bitmap srcbitmap = new

i am working on a game, but currently I am running benchmarks. If anyone can help me on this matter, I would greatly appreciate it. What I am doing, is I fire the paint event on a panel when I click the start button, with this code: private void startToolStripMenuItem_Click(object sender, EventArgs e) { try { pnlArea.Invalidate(); } catch (Exception) { throw; } } I then do this in my paint event: private void pnlArea_Paint(object sender, PaintEventArgs e) { try { stopwatch = new Stopwatch(); // Begin timing stopwatch.Start(); if (gameStatus == GameStatus.PlaceHead) { e.Graphics.DrawImage

In case I have a big drawing with all kinds of geometric forms (lines, rectangles, circles, e.t.c.) it takes a lot of time for the thread to draw everything. But in real life, one building is built by more than one workers. So if the drawing is the building and the threads are the builders, it will get drawn a lot faster. But I want to know how. Can you tell me how? Is it even possible (though I have already asked and the answer was "Yes")? Is it worth it to be used? What are the risks? If there are questions that I have missed, please tell me about them and answer them. Thanks! Assuming you

In the following code, I'm trying to draw two lines: One with a subpixel width (0.5) and the other with 1px width: var img = new Bitmap(256, 256); Graphics graphics = Graphics.FromImage(img); graphics.SmoothingMode = SmoothingMode.AntiAlias; // Draw a subpixel line (0.5 width) graphics.DrawLine(new Pen(Color.Red, (float)0.5), 0, 100, 255, 110); // Draw a single pixel line (1 width) graphics.DrawLine(new Pen(Color.Red, (float)1), 0, 110, 255, 120); img.Save(@"c:\temp\test.png", ImageFormat.Png); graphics.Dispose(); img.Dispose(); However, in the generated image, both lines appear the same width

I'm using .NET framework (tried 3.5 & 4.0) to load a .TIFF file and save it as .PNG. I expect two subsequent calls to the Save() method (using the same TIFF file) to produce the same PNG file. The produced files are, however, 'sometimes' different. The C# code below shows the problem: Image sourceToConvert = Bitmap.FromFile("c:\\tmp\\F1.tif"); sourceToConvert.Save("c:\\tmp\\F1_gen.png", ImageFormat.Png); for (int i = 0; i < 100; i++) { sourceToConvert = Bitmap.FromFile("c:\\tmp\\F1.tif"); sourceToConvert.Save("c:\\tmp\\F1_regen.png", ImageFormat.Png); if (!CompareFileBytes("c:\\tmp\\F1_gen.png

I understand it is best practise to call Dispose() on instances of Pen and Brush , except if they've been set to the system-predefined values (eg. System.Drawing.Brushes , System.Drawing.Pens or System.Drawing.SystemBrushes ) Trying to dispose a system-defined resource results in an exception being thrown. It doesn't appear to be obvious how you can detect (apart from wrapping the Dispose() call in a try/catch) whether one of these resources is referencing a system-defined or user-defined value. There is no requirement to call Dispose . The purpose of garbage collection is to eliminate these