81 lines
3.1 KiB
C#
81 lines
3.1 KiB
C#
// Copyright © 2010-2014 The CefSharp Authors. All rights reserved.
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//
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// Use of this source code is governed by a BSD-style license that can be found in the LICENSE file.
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using System;
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using System.Diagnostics;
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using System.IO;
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using CefSharp.OffScreen;
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namespace CefSharp.MinimalExample.OffScreen
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{
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public class Program
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{
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private static ChromiumWebBrowser browser;
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public static void Main(string[] args)
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{
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const string testUrl = "https://www.google.com/";
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Console.WriteLine("This example application will load {0}, take a screenshot, and save it to your desktop.", testUrl);
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Console.WriteLine("You may see Chromium debugging output, please wait...");
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Console.WriteLine();
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Cef.Initialize(new CefSettings());
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// Create the offscreen Chromium browser.
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browser = new ChromiumWebBrowser();
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// An event that is fired when the first page is finished loading.
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// This returns to us from another thread.
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browser.FrameLoadEnd += BrowserFrameLoadEnd;
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// Start loading the test URL in Chrome's thread.
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browser.Load(testUrl);
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// We have to wait for something, otherwise the process will exit too soon.
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Console.ReadKey();
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// Clean up Chromium objects. You need to call this in your application otherwise
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// you will get a crash when closing.
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Cef.Shutdown();
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}
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private static void BrowserFrameLoadEnd(object sender, FrameLoadEndEventArgs e)
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{
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// Check to ensure it is the main frame which has finished loading
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// (rather than an iframe within the main frame).
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if (e.IsMainFrame)
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{
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// Remove the load event handler, because we only want one snapshot of the initial page.
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browser.FrameLoadEnd -= BrowserFrameLoadEnd;
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// Wait for the screenshot to be taken.
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var task = browser.ScreenshotAsync();
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task.Wait();
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// Make a file to save it to (e.g. C:\Users\jan\Desktop\CefSharp screenshot.png)
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var screenshotPath = Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.Desktop), "CefSharp screenshot.png");
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Console.WriteLine();
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Console.WriteLine("Screenshot ready. Saving to {0}", screenshotPath);
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// Save the Bitmap to the path.
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// The image type is auto-detected via the ".png" extension.
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task.Result.Save(screenshotPath);
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// We no longer need the Bitmap.
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// Dispose it to avoid keeping the memory alive. Especially important in 32-bit applications.
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task.Result.Dispose();
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Console.WriteLine("Screenshot saved. Launching your default image viewer...");
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// Tell Windows to launch the saved image.
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Process.Start(screenshotPath);
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Console.WriteLine("Image viewer launched. Press any key to exit.");
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}
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}
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}
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}
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