MartinBspheroid · March 6, 2020 15:33 · Mar 6, 2020 · Mar 6, 2020
diff --git a/CEF C# <-> JS → CEF_JS_CSHARP.cs b/CEF C# <-> JS → CEF_JS_CSHARP.cs
diff --git a/CEF C# <-> JS b/CEF C# <-> JS
@@ -0,0 +1,83 @@
+using System;
+using System.Collections.Generic;
+using System.ComponentModel;
+using System.Text.RegularExpressions;
+using System.Data;
+using System.Drawing;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using System.IO;
+using System.Windows.Forms;
+using CefSharp.WinForms;
+using CefSharp;
+
+// This is the code for your desktop app.
+// Press Ctrl+F5 (or go to Debug > Start Without Debugging) to run your app.
+
+namespace DesktopApp1
+{
+    public partial class Form1 : Form
+    {
+        public  ChromiumWebBrowser browser;
+        public class CallbackObj
+        {
+            public void showMessage(string msg)
+            {
+                // do whatever    
+                Console.WriteLine(msg);
+            }
+            public void getImage(string imgData)
+            {
+
+                using (Image image = Image.FromStream(new MemoryStream(Convert.FromBase64String(GetBase64FromJavaScriptImage(imgData)))))
+                {
+                    // <parameters>  : path / format 
+                    image.Save("output.jpg", System.Drawing.Imaging.ImageFormat.Jpeg); 
+                }
+            }
+
+            ///  From https://dejanstojanovic.net/aspnet/2018/january/javascript-base64-image-to-bitmap-in-c/
+
+            public static String GetBase64FromJavaScriptImage(String imgData)
+            {
+
+                return  Regex.Match(imgData, @"data:image/(?<type>.+?),(?<data>.+)").Groups["data"].Value;
+
+            }
+        }
+
+        public void InitBrowser()
+        {
+            CefSettings settings = new CefSettings();
+            settings.CefCommandLineArgs.Add("enable-media-stream", "1");
+            Cef.Initialize(settings);
+            CefSharpSettings.LegacyJavascriptBindingEnabled = true;
+
+            browser = new ChromiumWebBrowser("localhost:3000");
+
+
+            browser.JavascriptObjectRepository.Register("callbackObj", new CallbackObj(), isAsync: false, options: BindingOptions.DefaultBinder);
+
+            this.Controls.Add(browser);
+            browser.Dock = DockStyle.Fill;
+        }
+        public Form1()
+        {
+            InitializeComponent();
+            InitBrowser();
+        }
+
+        private void linkLabel1_LinkClicked(object sender, LinkLabelLinkClickedEventArgs e)
+        {
+            // Click on the link below to continue learning how to build a desktop app using WinForms!
+            System.Diagnostics.Process.Start("http://aka.ms/dotnet-get-started-desktop");
+
+        }
+
+        private void button1_Click(object sender, EventArgs e)
+        {
+            MessageBox.Show("Thanks!");
+        }
+    }
+}