使用WinFrom + CefSharp 開發客戶端程序

今天使用CefSharp，加上本地資源文件嵌入了HTML、CSS、JS文件，做為Winform的UI；效果不錯，漂亮可控，簡簡單單，半天時間搞定從開發到上線；

下面記錄下相關的備忘：

 （窗口的效果）

關閉按鈕和最小化按鈕，使用JS交互調WIN窗口實現；

重點講資源文件的嵌入：

1、直接向Resorces文件夾添加文件或文件夾；添加完畢后，每個文件屬性需要選擇為“嵌入的資源”，才會隨程序編譯一並打包進程序中；

2、關鍵的解析：

var ns = ass.GetManifestResourceNames();

 通過這個語句，可以在調試中查看到所有資源的路徑；

using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Net;
using System.Reflection;
using System.Text;
using System.Threading.Tasks;
using CefSharp;

namespace mssClient.Helper
{
    /// <summary>
    /// https://qwqaq.com/ee43a4af.html
    /// </summary>
    public class ResourceSchemeHandler:CefSharp.ResourceHandler
    {
        public override bool ProcessRequestAsync(IRequest request, ICallback callback)
        {
            var names = this.GetType().Assembly.GetManifestResourceNames();

            Console.WriteLine(names);

            Uri u = new Uri(request.Url);
            String file = u.Authority + u.AbsolutePath; // 注：目錄名需全為小寫字母，否則將無法得到 Resource

            Assembly ass = Assembly.GetExecutingAssembly();
            String resourcePath = ass.GetName().Name + ".Resources." + file.Replace("/", "."); // 你可以設置斷點看看這里的值
            var ns = ass.GetManifestResourceNames();
            Task.Run(() =>
            {
                using (callback)
                {
                    if (ass.GetManifestResourceInfo(resourcePath) != null)
                    {
                        Stream stream = ass.GetManifestResourceStream(resourcePath);
                        string mimeType = "application/octet-stream";
                        switch (Path.GetExtension(file))
                        {
                            case ".html":
                                mimeType = "text/html";
                                break;
                            case ".js":
                                mimeType = "text/javascript";
                                break;
                            case ".css":
                                mimeType = "text/css";
                                break;
                            case ".png":
                                mimeType = "image/png";
                                break;
                            case ".appcache":
                                break;
                            case ".manifest":
                                mimeType = "text/cache-manifest";
                                break;
                        }
                        // Reset the stream position to 0 so the stream can be copied into the underlying unmanaged buffer
                        stream.Position = 0;
                        // Populate the response values - No longer need to implement GetResponseHeaders (unless you need to perform a redirect)
                        ResponseLength = stream.Length;
                        MimeType = mimeType;
                        StatusCode = (int)HttpStatusCode.OK;
                        Stream = stream;
                        callback.Continue();
                    }
                    else
                    {
                        callback.Cancel();
                    }
                }
            });

            return true;
        }
    }
}

　　下面是協議注冊類，寫在 Program.cs 中，包含協議注冊、CEF初始化代碼等；

                //CEF
                try
                {
                    CefSettings settings = new CefSettings();

                    //設置瀏覽器的UA，將用戶等信息放到這里，事實上，Winform應該是先啟動登錄窗口，登錄成功后再隱藏登錄窗口並顯示主窗口。
                    //settings.UserAgent = "Mss Application Client;";

                    //設置語言環境為中文環境
                    settings.Locale = "zh-CN";

                    //禁用日志輸出
                    settings.LogFile = AppDomain.CurrentDomain.BaseDirectory + "Logs\\chromeWebBrowserDebug.log";
                    settings.LogSeverity = LogSeverity.Disable;

                    //注冊自定義協議，用於讀取exe中的資源文件
                    settings.RegisterScheme(new CefCustomScheme()
                    {
                        SchemeName = CustomSchemeHandler.SchemeName,
                        SchemeHandlerFactory = new CustomSchemeHandler(),
                        IsCorsEnabled = true,
                        IsSecure = false
                    });

                    //注冊自定義協議，用於讀取本地程序根目錄下的文件
                    settings.RegisterScheme(new CefCustomScheme()
                    {
                        SchemeName = LocalScremeHandler.SchemeName,
                        SchemeHandlerFactory = new LocalScremeHandler(),
                        IsCorsEnabled = true,
                        IsSecure = false
                    });

                    //定義緩存目錄，不然發布后可能會自動在桌面創建緩存目錄
                    settings.CachePath = App.Instance.ChromeCacheDirectory; //AppDomain.CurrentDomain.BaseDirectory + "ChromeCache\\";

                    //Initialize cef with the provided settings
                    Cef.Initialize(settings);

                    //必須做下面的設置，減少白屏的發生，這是CEFSHARP的BUG
                    if (!settings.MultiThreadedMessageLoop)
                    {
                        Application.Idle += (sender, e) => { Cef.DoMessageLoopWork(); };
                    }

                    //必須使用該語句，在顯示頁面縮放時，啟用高DPI縮放支持，否則頁面會出現模糊化。事實上就是強制必須使用100%
                    Cef.EnableHighDPISupport();
                }
                catch (Exception ex) { }
                //注冊主窗口
                Application.Run(App.Instance.WebLoginForm);