Question

您好我有一个网站，我试图只为我的浏览器用户显示这个网站。（我的浏览器也只显示我的网站）

所以我在visual basic express上编写了这个浏览器

Public Class Form1
    Dim userClickNavigate As Boolean = True

    Private Sub WebBrowser1_DocumentCompleted(ByVal sender As Object, ByVal e As System.Windows.Forms.WebBrowserDocumentCompletedEventArgs) Handles WebBrowser1.DocumentCompleted
        userClickNavigate = True
    End Sub

    Private Sub WebBrowser1_Navigating(ByVal sender As System.Object, ByVal e As System.Windows.Forms.WebBrowserNavigatingEventArgs) Handles WebBrowser1.Navigating
        If Not userClickNavigate Then
            userClickNavigate = True
            WebBrowser1.Navigate(e.Url, Nothing, Nothing, "User-Agent:Nokia-MIT-Browser/3.0")
        End If
    End Sub

    Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
        userClickNavigate = False
        WebBrowser1.Navigate("http://orenaksakal.org/demo2/", Nothing, Nothing, "User-Agent:Nokia-MIT-Browser/3.0")
    End Sub
End Class

这首先工作真的很好。但我有我的PHP文件。那段代码;

if (strpos($_SERVER['HTTP_USER_AGENT'], 'MSIE') !== FALSE) {
    echo '<script type="text/javascript">alert("Bu site Internet Exploreri desteklemiyor!");</script>';
    die();

当我刷新页面或转到下一个链接时，我的用户代理更改不再有效...转回IE ..

我怎么能一直为我的浏览器程序保留它？

Answer 1

在BeforeNavigate2事件中，您可以拦截浏览器请求，取消它并将其替换为您自己的。您对Navigate2方法的调用将导致事件再次触发，因此您需要使用表单级别变量来检查和阻止递归。我不确定你用userClickNavigate标志做了什么，所以你可能需要修改它以使用它。

Option Explicit

Private Const USER_AGENT = "User-Agent:Nokia-MIT-Browser/3.0" 'contant declaration of use agent
Private mblnRecursing As Boolean ' form level variable to prevent recursion

Private Sub Form_Load()

    WebBrowser1.Navigate2 "http://orenaksakal.org/demo2"

End Sub

Private Sub WebBrowser1_BeforeNavigate2(ByVal pDisp As Object, URL As Variant, Flags As Variant, TargetFrameName As Variant, PostData As Variant, Headers As Variant, Cancel As Boolean)
    Dim MyHeaders As Variant

    If (mblnRecursing = False) Then
        mblnRecursing = True
        Cancel = True
        MyHeaders = Headers & USER_AGENT
        WebBrowser1.Navigate2 URL, Flags, TargetFrameName, PostData, MyHeaders
    End If
    mblnRecursing = False

End Sub

更改我的浏览器的Useragent（使用vb编码）

1 个答案: