c# - 如何强制 Web 浏览器控件记住代理凭据设置？

Question

我正在使用 .net Web 浏览器控件通过具有凭据的代理在新窗口中打开 url。我为此使用了这段代码:

Public Function AppendHeader(ByRef OriginalHeader As String, ByVal Addition As String) As Boolean
    If OriginalHeader <> "" Then
        OriginalHeader = OriginalHeader + vbNewLine
    End If
    OriginalHeader = OriginalHeader + Addition
    OriginalHeader.Trim(vbNewLine.ToCharArray)
End Function

Public Function Base64Enc(ByRef s As String) As String
    Base64Enc = Convert.ToBase64String(System.Text.ASCIIEncoding.ASCII.GetBytes(s))
End Function

Public Sub Navigate()
    Dim webBrowser As WebBrowser = New WebBrowser()
    Dim headers As String = ""
    AppendHeader(headers, "Proxy-Authorization: Basic " & Base64Enc("user:pass"))
    'AppendHeader(headers, "Authorization: Basic " & Base64Enc("user:pass"))
    webBrowser.Navigate("http://stackoverflow.com", Guid.NewGuid().ToString(), Nothing, headers)
End Sub

此代码有助于在第一时间隐藏 Windows 安全窗口，但如果加载网页向其他 url 发送请求，此窗口会一次又一次地显示(您可以在下面的屏幕截图中看到)。

那么我该怎么做才能解决这个问题呢？(我用的是winforms和vb.net，不过C#也适合)

Answer 1

试一试我无法测试它:)

Private Sub webBrowser_Navigating(ByVal sender As Object, ByVal e As WebBrowserNavigatingEventArgs)

    Dim credentials As New System.Net.NetworkCredential("user", "pwd", "MyDomain") 
    Dim proxy As New System.Net.WebProxy("127.0.1.2", 80) 
    If proxy Is Nothing Then
        e.Cancel = True
    End If

End Sub