using System;
using System.Collections.Generic;
using System.Linq;
using System.Runtime.InteropServices;
using System.Text;
using System.Threading.Tasks;
namespace sogou
{
public class IEProxy
{
private const int INTERNET_OPTION_PROXY = 38;
private const int INTERNET_OPEN_TYPE_PROXY = 3;
private const int INTERNET_OPEN_TYPE_DIRECT = 1;
private string ProxyStr;
[DllImport("wininet.dll", SetLastError = true)]
private static extern bool InternetSetOption(IntPtr hInternet, int dwOption, IntPtr lpBuffer, int lpdwBufferLength);
public struct Struct_INTERNET_PROXY_INFO
{
public int dwAccessType;
public IntPtr proxy;
public IntPtr proxyBypass;
}
private bool InternetSetOption(string strProxy)
{
int bufferLength;
IntPtr intptrStruct;
Struct_INTERNET_PROXY_INFO struct_IPI;
if (string.IsNullOrEmpty(strProxy) || strProxy.Trim().Length == 0)
{
strProxy = string.Empty;
struct_IPI.dwAccessType = INTERNET_OPEN_TYPE_DIRECT;
}
else
{
struct_IPI.dwAccessType = INTERNET_OPEN_TYPE_PROXY;
}
struct_IPI.proxy = Marshal.StringToHGlobalAnsi(strProxy);
struct_IPI.proxyBypass = Marshal.StringToHGlobalAnsi("local");
bufferLength = Marshal.SizeOf(struct_IPI);
intptrStruct = Marshal.AllocCoTaskMem(bufferLength);
Marshal.StructureToPtr(struct_IPI, intptrStruct, true);
return InternetSetOption(IntPtr.Zero, INTERNET_OPTION_PROXY, intptrStruct, bufferLength);
}
public IEProxy(string strProxy)
{
this.ProxyStr = strProxy;
}
//设置代理
public bool RefreshIESettings()
{
return InternetSetOption(this.ProxyStr);
}
//取消代理
public bool DisableIEProxy()
{
return InternetSetOption(string.Empty);
}
}
}