如何更改WebBrowser的代理？

Question

通过说web浏览器，我的意思是在VB中创建一个对象，不像铬或IE。我如何更改浏览器用于浏览页面的代理？

Answer 1

我在网上找到了你的问题在C＃中的解决方案，所以这是我可以建议的VB版本。只要确保您导入System.Runtime.InteropServices。

<Runtime.InteropServices.DllImport("wininet.dll", SetLastError:=True)> _ 
     Private Shared Function InternetSetOption(ByVal hInternet As IntPtr, ByVal dwOption As Integer, ByVal lpBuffer As IntPtr, ByVal lpdwBufferLength As Integer) As Boolean 
       End Function 

       Public Structure Struct_INTERNET_PROXY_INFO 
         Public dwAccessType As Integer 
         Public proxy As IntPtr 
         Public proxyBypass As IntPtr 
       End Structure 

       Private Sub RefreshIESettings(ByVal strProxy As String) 
         Const INTERNET_OPTION_PROXY As Integer = 38 
         Const INTERNET_OPEN_TYPE_PROXY As Integer = 3 

         Dim struct_IPI As Struct_INTERNET_PROXY_INFO 

         ' Filling in structure 
         struct_IPI.dwAccessType = INTERNET_OPEN_TYPE_PROXY 
         struct_IPI.proxy = Marshal.StringToHGlobalAnsi(strProxy) 
         struct_IPI.proxyBypass = Marshal.StringToHGlobalAnsi("local") 

         ' Allocating memory 
         Dim intptrStruct As IntPtr = Marshal.AllocCoTaskMem(Marshal.SizeOf(struct_IPI)) 

         ' Converting structure to IntPtr 
         Marshal.StructureToPtr(struct_IPI, intptrStruct, True) 

         Dim iReturn As Boolean = InternetSetOption(IntPtr.Zero, INTERNET_OPTION_PROXY, intptrStruct, System.Runtime.InteropServices.Marshal.SizeOf(struct_IPI)) 
    End Sub 

Answer 2

This看起来很有希望。 http://www.pinvoke.net/default.aspx/wininet/InternetSetOption.html?diff=y