原文:

 

winform嵌入chrome浏览器,修改项目属性 生成 平台为x86

1.nuget安装cefsharp

2.实例化浏览器

ChromiumWebBrowser b;

private void Form1_Load(object sender, EventArgs e)

{

CefSettings settings = new CefSettings();

settings.CefCommandLineArgs.Add("--disable-web-security","1");//关闭同源策略,允许跨域

settings.CefCommandLineArgs.Add("ppapi-flash-version", "18.0.0.209");//PepperFlash\manifest.json中的version

settings.CefCommandLineArgs.Add("ppapi-flash-path", "PepperFlash\\pepflashplayer.dll");

settings.CefCommandLineArgs.Add("--enable-system-flash", "1");//使用系统flash

Cef.Initialize(settings);

/*以上设置未测试是否可行*/

b = new ChromiumWebBrowser("http://localhost:57531/views/Map/scene.html");

this.Controls.Add(b);

b.Dock = DockStyle.Fill;

b.KeyboardHandler = new CEFKeyBoardHander();

}

3.响应F12打开控制台console

 

public class KeyBoardHander : IKeyboardHandler    {        public bool OnKeyEvent(IWebBrowser browserControl, IBrowser browser, KeyType type, int windowsKeyCode,            int nativeKeyCode, CefEventFlags modifiers, bool isSystemKey)        {            if (type == KeyType.KeyUp && Enum.IsDefined(typeof(Keys), windowsKeyCode))            {                var key = (Keys)windowsKeyCode;                switch (key)                {                    case Keys.F12:                        browser.ShowDevTools();                        break;                    case Keys.F5:                        if (modifiers == CefEventFlags.ControlDown)                        {                            //MessageBox.Show("ctrl+f5");                            browser.Reload(true); //强制忽略缓存                        }                        else                        {                            //MessageBox.Show("f5");                            browser.Reload();                        }                        break;                }            }            return false;        }        public bool OnPreKeyEvent(IWebBrowser browserControl, IBrowser browser, KeyType type, int windowsKeyCode, int nativeKeyCode, CefEventFlags modifiers, bool isSystemKey, ref bool isKeyboardShortcut)        {            return false;            const int VK_F5 = 0x74;            if (windowsKeyCode == VK_F5)            {                browser.Reload(); //此处可以添加想要实现的代码段            }            return false;        }    }

 

 

3.js调用c#方法

public class JsCallMethods

{

public string Test(string msg)

{

return "Return value:" + msg;

/*如果此处要操作winform界面相关的,则需要使用beginInvoke将请求封送至winform主线程中,定义一个全局静态的主窗口类实例  public static Form1 MainForm;主窗体的load事件中MainForm=this;否则会报错:System.InvalidOperationException:“线程间操作无效: 从不是创建控件“Form1”的线程访问它。” 如果要在BeginInvoke之后返回值给前台请使用Invoke代替beginInvoke或者在返回值之前使用EndInvoke函数.

Form1.MainForm.BeginInvoke(new Action(()=> {

var frm = new XXWindow();

frm.Show();

/*Invoke之后返回值得情况示例*/

var str = "";

//Form1.MainForm.Invoke(...);

var iresult=Form1.MainForm.BeginInvoke(new Action(() =>

{

if (frm != null && !frm.IsDisposed)

{

str=frm.PlayByIndex(index,brand,ip,port,user,pwd,channel,isMainStream);

}

else

{

str= "播放窗口未实例化.";

Thread.Sleep(3000); //阻塞3s,后返回值给前台

}

}));

while (!iresult.AsyncWaitHandle.WaitOne(-1, false))

{

Console.Write("*");

}

var obj=Form1.MainForm.EndInvoke(iresult);

return str;

 

*/

}));

}

}

将以下代码加载Cef.Initialize(settings)之后

CefSharpSettings.LegacyJavascriptBindingEnabled = true;//新cefsharp绑定需要优先申明

browser.RegisterAsyncJsObject("MainForm", new JsCallMethods(), new CefSharp.BindingOptions() { CamelCaseJavascriptNames = false });

Cef.AddCrossOriginWhitelistEntry("*", "http", "*", true);

js调用并获取返回值:

var promise = MainForm.Test("123");

promise.then(function (v) {

alert(v);

})

 3.2下载文件

public void Download(string path)

{

try

{

HttpDownloadFile(path, Application.StartupPath, true, (fileName, contenType, bytes, totalLength, streamLength) =>

{

System.Diagnostics.Process.Start(fileName);

});

}

catch (Exception ex)

{

MessageBox.Show("操作失败:"+ex.Message);

}

}

/// <summary>

/// 文件下载

/// </summary>

/// <param name="url">所下载的路径</param>

/// <param name="path">本地保存的路径</param>

/// <param name="overwrite">当本地路径存在同名文件时是否覆盖</param>

/// <param name="callback">实时状态回掉函数</param>

/// Action<文件名,文件的二进制, 文件大小, 当前已上传大小>

public static void HttpDownloadFile(string url, string path, bool overwrite, Action<string, string, byte[], long, long> callback = null)

{

// 设置参数

HttpWebRequest request = WebRequest.Create(url) as HttpWebRequest;

//发送请求并获取相应回应数据

HttpWebResponse response = request.GetResponse() as HttpWebResponse;

//获取文件名

string fileName = response.Headers["Content-Disposition"];//attachment;filename=FileName.txt

string contentType = response.Headers["Content-Type"];//attachment;

if (string.IsNullOrEmpty(fileName))

fileName = response.ResponseUri.Segments[response.ResponseUri.Segments.Length - 1];

else

fileName = fileName.Remove(0, fileName.IndexOf("filename=") + 9);

fileName = HttpUtility.UrlDecode(fileName);

//直到request.GetResponse()程序才开始向目标网页发送Post请求

using (Stream responseStream = response.GetResponseStream())

{

long totalLength = response.ContentLength;

///文件byte形式

byte[] b =new byte[totalLength];

//创建本地文件写入流

if (System.IO.File.Exists(Path.Combine(path, fileName)))

{

fileName = DateTime.Now.Ticks + "-"+fileName ;

}

var fullPath = Path.Combine(path + "\\downloads", fileName);

using (Stream stream = new FileStream(fullPath, overwrite ? FileMode.Create : FileMode.CreateNew))

{

byte[] bArr = new byte[1024];

int size;

while ((size = responseStream.Read(bArr, 0, bArr.Length)) > 0)

{

stream.Write(bArr, 0, size);

}

}

callback.Invoke(fullPath, contentType, b, totalLength, 0);

}

}

js调用

 MainForm.Download("http://192.168.18.199/test.xls");

4.c#调用js方法

function jsMethod(param) {

alert("jsMethod called param is :" + param);

}

 

C#调用

b.ExecuteScriptAsync("jsMethod(123)");

 

 

 

From: https://www.cnblogs.com/xuejianxiyang/p/9981398.html