如何在不影响SYSTEM / IE代理的情况下为Webbrowser Control设置代理
如何在不设置IE代理的情况下为Web浏览器控件设置代理？
基本上我希望我的应用程序使用某个代理，但显然我不想更改用户的IE代理设置。
尝试UrlMkSetSessionOption INTERNET_OPTION_PROXY和UrlMkSetSessionOption INTERNET_OPTION_REFRESH
如果您的代理具有密码身份validation，则可能需要在WebBrowserSiteBase派生类中实现IAuthenticate（Ex）。
我在网上看到了一些可怕的解决方案。 大多数涉及为整个机器设置代理，然后将其切换回来。 这是一个允许您仅为托管控件的进程设置它的类。您可以这样调用它：
WinInetInterop.SetConnectionProxy(“localhost:8888”); 然后使用此调用将其恢复为IE中的默认设置：
//读取IE的默认设置并将其恢复为代理
WinInetInterop.RestoreSystemProxy();
如果您认为这有用，请告诉我！
清单：
using System; using System.Runtime.InteropServices; namespace SetProxy { public static class WinInetInterop { public static string applicationName; [DllImport("wininet.dll", SetLastError = true, CharSet = CharSet.Auto)] private static extern IntPtr InternetOpen( string lpszAgent, int dwAccessType, string lpszProxyName, string lpszProxyBypass, int dwFlags); [DllImport("wininet.dll", SetLastError = true)] [return: MarshalAs(UnmanagedType.Bool)] private static extern bool InternetCloseHandle(IntPtr hInternet); [StructLayout(LayoutKind.Sequential, CharSet = CharSet.Ansi)] private struct INTERNET_PER_CONN_OPTION_LIST { public int Size; // The connection to be set. NULL means LAN. public System.IntPtr Connection; public int OptionCount; public int OptionError; // List of INTERNET_PER_CONN_OPTIONs. public System.IntPtr pOptions; } private enum INTERNET_OPTION { // Sets or retrieves an INTERNET_PER_CONN_OPTION_LIST structure that specifies // a list of options for a particular connection. INTERNET_OPTION_PER_CONNECTION_OPTION = 75, // Notify the system that the registry settings have been changed so that // it verifies the settings on the next call to InternetConnect. INTERNET_OPTION_SETTINGS_CHANGED = 39, // Causes the proxy data to be reread from the registry for a handle. INTERNET_OPTION_REFRESH = 37 } private enum INTERNET_PER_CONN_OptionEnum { INTERNET_PER_CONN_FLAGS = 1, INTERNET_PER_CONN_PROXY_SERVER = 2, INTERNET_PER_CONN_PROXY_BYPASS = 3, INTERNET_PER_CONN_AUTOCONFIG_URL = 4, INTERNET_PER_CONN_AUTODISCOVERY_FLAGS = 5, INTERNET_PER_CONN_AUTOCONFIG_SECONDARY_URL = 6, INTERNET_PER_CONN_AUTOCONFIG_RELOAD_DELAY_MINS = 7, INTERNET_PER_CONN_AUTOCONFIG_LAST_DETECT_TIME = 8, INTERNET_PER_CONN_AUTOCONFIG_LAST_DETECT_URL = 9, INTERNET_PER_CONN_FLAGS_UI = 10 } private const int INTERNET_OPEN_TYPE_DIRECT = 1; // direct to net private const int INTERNET_OPEN_TYPE_PRECONFIG = 0; // read registry /// /// Constants used in INTERNET_PER_CONN_OPTON struct. /// private enum INTERNET_OPTION_PER_CONN_FLAGS { PROXY_TYPE_DIRECT = 0x00000001, // direct to net PROXY_TYPE_PROXY = 0x00000002, // via named proxy PROXY_TYPE_AUTO_PROXY_URL = 0x00000004, // autoproxy URL PROXY_TYPE_AUTO_DETECT = 0x00000008 // use autoproxy detection } /// /// Used in INTERNET_PER_CONN_OPTION. /// When create a instance of OptionUnion, only one filed will be used. /// The StructLayout and FieldOffset attributes could help to decrease the struct size. /// [StructLayout(LayoutKind.Explicit)] private struct INTERNET_PER_CONN_OPTION_OptionUnion { // A value in INTERNET_OPTION_PER_CONN_FLAGS. [FieldOffset(0)] public int dwValue; [FieldOffset(0)] public System.IntPtr pszValue; [FieldOffset(0)] public System.Runtime.InteropServices.ComTypes.FILETIME ftValue; } [StructLayout(LayoutKind.Sequential)] private struct INTERNET_PER_CONN_OPTION { // A value in INTERNET_PER_CONN_OptionEnum. public int dwOption; public INTERNET_PER_CONN_OPTION_OptionUnion Value; } /// /// Sets an Internet option. /// [DllImport("wininet.dll", CharSet = CharSet.Ansi, SetLastError = true)] private static extern bool InternetSetOption( IntPtr hInternet, INTERNET_OPTION dwOption, IntPtr lpBuffer, int lpdwBufferLength); /// /// Queries an Internet option on the specified handle. The Handle will be always 0. /// [DllImport("wininet.dll", CharSet = CharSet.Ansi, SetLastError = true, EntryPoint = "InternetQueryOption")] private extern static bool InternetQueryOptionList( IntPtr Handle, INTERNET_OPTION OptionFlag, ref INTERNET_PER_CONN_OPTION_LIST OptionList, ref int size); /// /// Set the proxy server for LAN connection. /// public static bool SetConnectionProxy(string proxyServer ) { IntPtr hInternet = InternetOpen(applicationName,INTERNET_OPEN_TYPE_DIRECT, null, null, 0); //// Create 3 options. //INTERNET_PER_CONN_OPTION[] Options = new INTERNET_PER_CONN_OPTION[3]; // Create 2 options. INTERNET_PER_CONN_OPTION[] Options = new INTERNET_PER_CONN_OPTION[2]; // Set PROXY flags. Options[0] = new INTERNET_PER_CONN_OPTION(); Options[0].dwOption = (int)INTERNET_PER_CONN_OptionEnum.INTERNET_PER_CONN_FLAGS; Options[0].Value.dwValue = (int)INTERNET_OPTION_PER_CONN_FLAGS.PROXY_TYPE_PROXY; // Set proxy name. Options[1] = new INTERNET_PER_CONN_OPTION(); Options[1].dwOption = (int)INTERNET_PER_CONN_OptionEnum.INTERNET_PER_CONN_PROXY_SERVER; Options[1].Value.pszValue = Marshal.StringToHGlobalAnsi(proxyServer); //// Set proxy bypass. //Options[2] = new INTERNET_PER_CONN_OPTION(); //Options[2].dwOption = // (int)INTERNET_PER_CONN_OptionEnum.INTERNET_PER_CONN_PROXY_BYPASS; //Options[2].Value.pszValue = Marshal.StringToHGlobalAnsi("local"); //// Allocate a block of memory of the options. //System.IntPtr buffer = Marshal.AllocCoTaskMem(Marshal.SizeOf(Options[0]) // + Marshal.SizeOf(Options[1]) + Marshal.SizeOf(Options[2])); // Allocate a block of memory of the options. System.IntPtr buffer = Marshal.AllocCoTaskMem(Marshal.SizeOf(Options[0]) + Marshal.SizeOf(Options[1])); System.IntPtr current = buffer; // Marshal data from a managed object to an unmanaged block of memory. for (int i = 0; i < Options.Length; i++) { Marshal.StructureToPtr(Options[i], current, false); current = (System.IntPtr)((int)current + Marshal.SizeOf(Options[i])); } // Initialize a INTERNET_PER_CONN_OPTION_LIST instance. INTERNET_PER_CONN_OPTION_LIST option_list = new INTERNET_PER_CONN_OPTION_LIST(); // Point to the allocated memory. option_list.pOptions = buffer; // Return the unmanaged size of an object in bytes. option_list.Size = Marshal.SizeOf(option_list); // IntPtr.Zero means LAN connection. option_list.Connection = IntPtr.Zero; option_list.OptionCount = Options.Length; option_list.OptionError = 0; int size = Marshal.SizeOf(option_list); // Allocate memory for the INTERNET_PER_CONN_OPTION_LIST instance. IntPtr intptrStruct = Marshal.AllocCoTaskMem(size); // Marshal data from a managed object to an unmanaged block of memory. Marshal.StructureToPtr(option_list, intptrStruct, true); // Set internet settings. bool bReturn = InternetSetOption(hInternet, INTERNET_OPTION.INTERNET_OPTION_PER_CONNECTION_OPTION, intptrStruct, size); // Free the allocated memory. Marshal.FreeCoTaskMem(buffer); Marshal.FreeCoTaskMem(intptrStruct); InternetCloseHandle(hInternet); // Throw an exception if this operation failed. if (!bReturn) { throw new ApplicationException(" Set Internet Option Failed!"); } return bReturn; } /// /// Backup the current options for LAN connection. /// Make sure free the memory after restoration. /// private static INTERNET_PER_CONN_OPTION_LIST GetSystemProxy() { // Query following options. INTERNET_PER_CONN_OPTION[] Options = new INTERNET_PER_CONN_OPTION[3]; Options[0] = new INTERNET_PER_CONN_OPTION(); Options[0].dwOption = (int)INTERNET_PER_CONN_OptionEnum.INTERNET_PER_CONN_FLAGS; Options[1] = new INTERNET_PER_CONN_OPTION(); Options[1].dwOption = (int)INTERNET_PER_CONN_OptionEnum.INTERNET_PER_CONN_PROXY_SERVER; Options[2] = new INTERNET_PER_CONN_OPTION(); Options[2].dwOption = (int)INTERNET_PER_CONN_OptionEnum.INTERNET_PER_CONN_PROXY_BYPASS; // Allocate a block of memory of the options. System.IntPtr buffer = Marshal.AllocCoTaskMem(Marshal.SizeOf(Options[0]) + Marshal.SizeOf(Options[1]) + Marshal.SizeOf(Options[2])); System.IntPtr current = (System.IntPtr)buffer; // Marshal data from a managed object to an unmanaged block of memory. for (int i = 0; i < Options.Length; i++) { Marshal.StructureToPtr(Options[i], current, false); current = (System.IntPtr)((int)current + Marshal.SizeOf(Options[i])); } // Initialize a INTERNET_PER_CONN_OPTION_LIST instance. INTERNET_PER_CONN_OPTION_LIST Request = new INTERNET_PER_CONN_OPTION_LIST(); // Point to the allocated memory. Request.pOptions = buffer; Request.Size = Marshal.SizeOf(Request); // IntPtr.Zero means LAN connection. Request.Connection = IntPtr.Zero; Request.OptionCount = Options.Length; Request.OptionError = 0; int size = Marshal.SizeOf(Request); // Query internet options. bool result = InternetQueryOptionList(IntPtr.Zero, INTERNET_OPTION.INTERNET_OPTION_PER_CONNECTION_OPTION, ref Request, ref size); if (!result) { throw new ApplicationException(" Set Internet Option Failed! "); } return Request; } /// /// Restore the options for LAN connection. /// /// ///
public struct Struct_INTERNET_PROXY_INFO { public int dwAccessType; public IntPtr proxy; public IntPtr proxyBypass; }; [DllImport("wininet.dll", SetLastError = true)] public static extern bool InternetSetOption(IntPtr hInternet, int dwOption, IntPtr lpBuffer, int lpdwBufferLength); //to activate use like this strProxy="85.45.66.25:3633" //to deactivate use like this strProxy=":" public static void RefreshIESettings(string strProxy) { try { 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)); } catch (Exception ex) { //TB.ErrorLog(ex); } }
你不能 。 WebBrowser控件是IE。 它是下面的IE渲染引擎。 基本上IE.exe就像它周围的UI一样。