.NET混合开发解决方案9 WebView2控件的导航事件

  1 public partial class Frm2Navigation : Form
  2 {
  3     public Frm2Navigation()
  4     {
  5         InitializeComponent();
  6 
  7         InitializeAsync();
  8 
  9         webView2.CoreWebView2InitializationCompleted += WebView2_CoreWebView2InitializationCompleted;
 10 
 11         webView2.NavigationStarting += WebView2_NavigationStarting;
 12         webView2.NavigationCompleted += WebView2_NavigationCompleted;
 13     }
 14 
 15     async void InitializeAsync()
 16     {
 17         await webView2.EnsureCoreWebView2Async(null);
 18     }
 19 
 20     private void WebView2_CoreWebView2InitializationCompleted(object? sender, CoreWebView2InitializationCompletedEventArgs e)
 21     {
 22         if (e.IsSuccess == false)
 23         {
 24             MessageBox.Show("WebView2_CoreWebView2InitializationCompleted 事件，发生异常。"
 25                           + Environment.NewLine + e.InitializationException.Message,
 26                             "提示", MessageBoxButtons.OK, MessageBoxIcon.Error);
 27         }
 28 
 29         webView2.SourceChanged += WebView2_SourceChanged;
 30         webView2.ContentLoading += WebView2_ContentLoading;
 31         webView2.CoreWebView2.HistoryChanged += CoreWebView2_HistoryChanged;
 32         webView2.CoreWebView2.DOMContentLoaded += CoreWebView2_DOMContentLoaded;
 33 
 34         webView2.CoreWebView2.BasicAuthenticationRequested += CoreWebView2_BasicAuthenticationRequested;
 35         webView2.CoreWebView2.ProcessFailed += CoreWebView2_ProcessFailed;
 36     }
 37 
 38     private void WebView2_NavigationStarting(object? sender, CoreWebView2NavigationStartingEventArgs e)
 39     {
 40         string uri = e.Uri;
 41         if (!uri.StartsWith("https://"))
 42         {
 43             //webView2.CoreWebView2.ExecuteScriptAsync($"alert('{uri} 不安全, 请尝试https链接。')");
 44 
 45             DialogResult dr = MessageBox.Show($"{uri} 不安全, 请尝试https链接。\r\n\r\n 确定要访问吗？", "提示", MessageBoxButtons.OKCancel, MessageBoxIcon.Warning);
 46             if (dr == DialogResult.Cancel)
 47             {
 48                 e.Cancel = true;
 49             }
 50         }
 51     }
 52 
 53     private void WebView2_SourceChanged(object? sender, CoreWebView2SourceChangedEventArgs e)
 54     {
 55         //if(e.IsNewDocument)
 56         //{
 57         // webView2.CoreWebView2.ExecuteScriptAsync("alert('WebView2_SourceChanged事件。= e.IsNewDocument = true')");
 58         //}
 59 
 60         MessageBox.Show("WebView2_SourceChanged 事件。"
 61                       + Environment.NewLine + "e.IsNewDocument = " + e.IsNewDocument,
 62                         "提示", MessageBoxButtons.OK, MessageBoxIcon.Information);
 63     }
 64 
 65     private void WebView2_ContentLoading(object? sender, CoreWebView2ContentLoadingEventArgs e)
 66     {
 67         //webView2.CoreWebView2.ExecuteScriptAsync("alert('WebView2_SourceChanged事件。= e.IsNewDocument = true')");
 68 
 69         MessageBox.Show("WebView2_ContentLoading 事件。"
 70                       + Environment.NewLine + "e.IsErrorPage = " + e.IsErrorPage,
 71                         "提示", MessageBoxButtons.OK, MessageBoxIcon.Information);
 72     }
 73 
 74     private void CoreWebView2_HistoryChanged(object? sender, object e)
 75     {
 76         MessageBox.Show("CoreWebView2_HistoryChanged 事件。",
 77                         "提示", MessageBoxButtons.OK, MessageBoxIcon.Information);
 78     }
 79 
 80     private void CoreWebView2_DOMContentLoaded(object? sender, CoreWebView2DOMContentLoadedEventArgs e)
 81     {
 82         MessageBox.Show("CoreWebView2_DOMContentLoaded 事件。"
 83                       + Environment.NewLine + "e.NavigationId = " + e.NavigationId,
 84                         "提示", MessageBoxButtons.OK, MessageBoxIcon.Information);
 85     }
 86 
 87     private void WebView2_NavigationCompleted(object? sender, CoreWebView2NavigationCompletedEventArgs e)
 88     {
 89         MessageBox.Show("WebView2_NavigationCompleted 事件。"
 90                       + Environment.NewLine + "e.NavigationId = " + e.NavigationId
 91                       + Environment.NewLine + "e.IsSuccess = " + e.IsSuccess
 92                       + Environment.NewLine + "e.WebErrorStatus = " + e.WebErrorStatus,
 93                       "提示", MessageBoxButtons.OK, MessageBoxIcon.Information);
 94     }
 95 
 96 
 97     private void CoreWebView2_ProcessFailed(object? sender, CoreWebView2ProcessFailedEventArgs e)
 98     {
 99         MessageBox.Show("CoreWebView2_ProcessFailed 事件。"
100                       + Environment.NewLine + "e.ExitCode = " + e.ExitCode
101                       + Environment.NewLine + "e.FrameInfosForFailedProcess = " + e.FrameInfosForFailedProcess
102                       + Environment.NewLine + "e.ProcessDescription = " + e.ProcessDescription
103                       + Environment.NewLine + "e.ProcessFailedKind = " + e.ProcessFailedKind
104                       + Environment.NewLine + "e.Reason = " + e.Reason,
105                       "提示", MessageBoxButtons.OK, MessageBoxIcon.Information);
106     }
107 
108 
109     private void CoreWebView2_BasicAuthenticationRequested(object? sender, CoreWebView2BasicAuthenticationRequestedEventArgs e)
110     {
111         MessageBox.Show("CoreWebView2_BasicAuthenticationRequested 事件。"
112                       + Environment.NewLine + "e.Uri = " + e.Uri
113                       + Environment.NewLine + "e.Cancel = " + e.Cancel
114                       + Environment.NewLine + "e.Challenge = " + e.Challenge
115                       + Environment.NewLine + "e.Response = " + e.Response,
116                         "提示", MessageBoxButtons.OK, MessageBoxIcon.Information);
117 
118     }
119 
120 
121     // 访问url
122     private void btnGo_Click(object sender, EventArgs e)
123     {
124         string rawUrl = txtUrl.Text;
125         if (string.IsNullOrWhiteSpace(rawUrl))
126         {
127             MessageBox.Show("请输入网址。", "提示", MessageBoxButtons.OK, MessageBoxIcon.Warning);
128 
129             txtUrl.Focus();
130 
131             return;
132         }
133 
134         Uri uri;
135 
136         if (Uri.IsWellFormedUriString(rawUrl, UriKind.Absolute))
137         {
138             uri = new Uri(rawUrl);
139         }
140         else if (rawUrl.Contains(" ") == false && rawUrl.Contains(".") == false)
141         {
142             // 无效的URI包含一个点且没有空格，请尝试在前面添加http://标记
143             uri = new Uri("http://" + rawUrl);
144         }
145         else if (rawUrl.StartsWith("http://") == false)
146         {
147             uri = new Uri("http://" + rawUrl);
148         }
149         else
150         {
151             // 其他情况将其视为网络搜索
152             uri = new Uri("https://bing.com/search?q=" + string.Join("+", Uri.EscapeDataString(rawUrl).Split(new string[] { "%20" }, StringSplitOptions.RemoveEmptyEntries)));
153         }
154 
155         //webView2.CoreWebView2.Navigate(url.Trim());
156         webView2.Source = uri;
157     }
158 }