如何在 NavigationCompleted 事件后停止 Webview2 重新加载网站。 VB.NET C#

How to stop Webview2 reloading website after NavigationCompleted event. VB.NET C#

我有一个使用 Webview2 浏览器打开表单的模块。 Webview2 控件然后使用用户用户名和密码(他之前在两个文本框中输入)登录网站并通过几个链接加载到特定网页,用户可以在其中搜索客户,再次 www.login.ca/search. After the user enters a name and clicks on the search button the next page load for a second but then loads the www.login.ca/search 页面。我只想让用户能够继续浏览该页面,而无需浏览器重新加载“登录。ca/search”网页。

我有这个:

Imports System.Windows.Interop
Imports Microsoft.Web.WebView2.Core

Module SearchForCustomer

Public Sub CheckCustomer()
    WebviewForm.Show()
    OpenAndLogIn()
End Sub

Public Sub OpenAndLogIn()

    'Open webpage and log in
    Dim Loginwebaddress As String = "https://www.login.ca"
    WebviewForm.WebView21.Source = New Uri(Loginwebaddress)

    AddHandler(WebviewForm.WebView21.NavigationCompleted), AddressOf FirstPageWebView
End Sub

Private Async Sub FirstPageWebView(ByVal sender As Object, ByVal e As CoreWebView2NavigationCompletedEventArgs)
    Dim msg = TextBox1.Text 'Username
    Dim msg2 = TextBox2.Text 'password

    Await WebviewForm.WebView21.ExecuteScriptAsync($"document.getElementById('LoginUN').value = '{msg}';")
    Await WebviewForm.WebView21.ExecuteScriptAsync($"document.getElementById('Login1PW').value = '{msg2}';")
    Await WebviewForm.WebView21.ExecuteScriptAsync($"document.getElementById('Login1_DoLogin').click();")

    AddHandler(WebviewForm.WebView21.NavigationCompleted), AddressOf LoginWebpageLoaded
End Sub

Private Sub LoginWebpageLoaded

    'Load the search for customer page
    Dim Loginwebaddress As String = "https://www.login.ca/search"

    WebviewForm.WebView21.Source = New Uri(Loginwebaddress)

End Sub

FirstPageWebView 的第一行应该再次删除处理程序,因为它只能使用一次。

当您调用 AddHandler 时,您实际上注册了 2 个处理程序,并且它们将在每个 NavigationCompleted 事件中都 运行。

(我不知道 Vb.Net 所以这段代码可能有误,但我希望你明白了:

Private Async Sub FirstPageWebView(ByVal sender As Object, ByVal e As CoreWebView2NavigationCompletedEventArgs)
    RemoveHandler(WebviewForm.WebView21.NavigationCompleted), AddressOf LoginWebpageLoaded
    ......... more code .........