微软webbrowser控件也就是IE插件，他的所有功能就像IE类似，当然设置也是一样的，下面介绍下webbrowser如何设置代理，可不要用这个对抗广告联盟哦
You can change the proxy with InternetSetOption method from the wininet.dll,
here is a example to set the proxy:
using System.Runtime.InteropServices;
Public struct Struct_INTERNET_PROXY_INFO
{
public int
dwAccessType;
public IntPtr proxy;
public IntPtr
proxyBypass;
};
[DllImport("wininet.dll", SetLastError =
true)]
private static extern bool InternetSetOption(IntPtr hInternet,
int dwOption, IntPtr lpBuffer, int lpdwBufferLength);
private void
RefreshIESettings(string strProxy)
{
const int
INTERNET_OPTION_PROXY = 38;
const int INTERNET_OPEN_TYPE_PROXY =
3;
Struct_INTERNET_PROXY_INFO struct_IPI;
// Filling in
structure
struct_IPI.dwAccessType =
INTERNET_OPEN_TYPE_PROXY;
struct_IPI.proxy =
Marshal.StringToHGlobalAnsi(strProxy);
struct_IPI.proxyBypass =
Marshal.StringToHGlobalAnsi("local");
// Allocating
memory
IntPtr intptrStruct =
Marshal.AllocCoTaskMem(Marshal.SizeOf(struct_IPI));
// Converting
structure to IntPtr
Marshal.StructureToPtr(struct_IPI, intptrStruct,
true);
bool iReturn = InternetSetOption(IntPtr.Zero,
INTERNET_OPTION_PROXY, intptrStruct,
Marshal.SizeOf(struct_IPI));
}
private void
SomeFunc()
{
RefreshIESettings("192.168.1.200:1010");
System.Object
nullObject = 0;
string strTemp = String.Empty;
System.Object
nullObjStr =
strTemp;
axWebBrowser1.Navigate("http://willstay.tripod.com", ref
nullObject, ref nullObjStr, ref nullObjStr, ref nullObjStr);
}
-------------------------------------------------------------------------------------------------------------------------------------
昨 天做的投票机遇到个新问题，昨天开始那个投票开始现在ip地址，每个地址只能投5票/天。如果每次更改ie的连接为代理服务器，那也麻烦死了，如
果改用webclient，那昨天的2个多小时就白费了，上网一通狂收还真找到了办法，这下好办了，建了一个proxy.txt文档，里面放上从网上收到
的代理服务器，然后程序读到一个listbox里面，每次需要更换ip的时候只要单击一次，就可以还一个地址重新投票了。
附上proxy.cs
using
System.Runtime.InteropServices;//需要添加这个引用
public struct
Struct_INTERNET_PROXY_INFO
{
public int
dwAccessType;
public IntPtr proxy;
public IntPtr
proxyBypass;
};
[DllImport("wininet.dll", SetLastError =
true)]
private static extern bool InternetSetOption(IntPtr hInternet,
int dwOption, IntPtr lpBuffer, int lpdwBufferLength);
public void
RefreshIESettings(string strProxy)
{
const int
INTERNET_OPTION_PROXY = 38;
const int INTERNET_OPEN_TYPE_PROXY =
3;
Struct_INTERNET_PROXY_INFO struct_IPI;
// Filling in
structure
struct_IPI.dwAccessType =
INTERNET_OPEN_TYPE_PROXY;
struct_IPI.proxy =
Marshal.StringToHGlobalAnsi(strProxy);
struct_IPI.proxyBypass =
Marshal.StringToHGlobalAnsi(”local”);
// Allocating
memory
IntPtr intptrStruct =
Marshal.AllocCoTaskMem(Marshal.SizeOf(struct_IPI));
// Converting
structure to IntPtr
Marshal.StructureToPtr(struct_IPI, intptrStruct,
true);
bool iReturn = InternetSetOption(IntPtr.Zero,
INTERNET_OPTION_PROXY, intptrStruct,
Marshal.SizeOf(struct_IPI));
}
使用的时候，调用RefreshIESettings py.proxy py1 = new
proxy();
py1.RefreshIESettings(”221.4.155.51:3128″);
webBrowser1.Navigate(”http://www.hfxsy.cn”,
null, null, null);
webbrowser代理c#代码实现,布布扣,bubuko.com