C# 使用Microsoft Edge WebView2的相关总结

  webView.CoreWebView2.AddHostObjectToScript("webBrowserObj", new ScriptCallbackObject());  await webView.CoreWebView2.AddScriptToExecuteOnDocumentCreatedAsync("var webBrowserObj= window.chrome.webview.hostObjects.webBrowserObj;");

 [ClassInterface(ClassInterfaceType.AutoDual)] [ComVisible(true)] /// 
 /// 网页调用C#方法 /// 
 public class ScriptCallbackObject { public string UserName { get; set; } = "我是C#属性"; public void ShowMessage() { MessageBox.Show("网页调用C#"); } public void ShowMessageArg(string arg) { MessageBox.Show("【网页调用C#】:" + arg); } public string GetData(string arg) { return "【网页调用C#获取数据】;" + arg; } [System.Runtime.CompilerServices.IndexerName("Items")] public string this[int index] { get { return m_dictionary[index]; } set { m_dictionary[index] = value; } } private Dictionary m_dictionary = new Dictionary(); }

 function callCsharp2() { var data2 = $("#txtArg").attr("value"); //大坑 值不会时刻变化   // alert(data2);   var data = $("#txtArg").val();  window.chrome.webview.hostObjects.webBrowserObj.ShowMessageArg(data);   //window.chrome.webview.postMessage(data);  }; async function callCsharp3() { var data = $("#txtArg").val(); var result = await webBrowserObj.GetData(data); alert(result); }; async function callCsharp4() { const propValue = await webBrowserObj.UserName; console.log(propValue); alert(propValue); };

 private void callJS_Click(object sender, RoutedEventArgs e) { webView.CoreWebView2.ExecuteScriptAsync("ShowMessage()"); } private void callJSArg_Click(object sender, RoutedEventArgs e) { webView.CoreWebView2.ExecuteScriptAsync($"ShowMessageArg('{txtArg.Text}')"); } private async void callJSGetData_Click(object sender, RoutedEventArgs e) { var jsResult = await webView.CoreWebView2.ExecuteScriptAsync($"GetData('{txtArg.Text}')"); if (!string.IsNullOrEmpty(jsResult)) { MessageBox.Show(jsResult); } }

 //2、C#调用网页 var jsVar = '123'; function Hello() { alert('调用Js' + jsVar); }; function ShowMessage() { alert('我是网页'); }; function ShowMessageArg(arg) { alert('【我是网页消息框】' + arg); }; function GetData(arg) { return '【我是网页返回给你】:' + arg; };

 webView.CoreWebView2.Settings.IsZoomControlEnabled = false;