在 C# 中以编程方式设置浏览器代理设置

Programmatically Set Browser Proxy Settings in C#

提问by John Miller

I'm writing an winforms app that needs to set internet explorer's proxy settings and then open a new browser window. At the moment, I'm applying the proxy settings by going into the registry:

我正在编写一个需要设置 Internet Explorer 代理设置的 winforms 应用程序，然后打开一个新的浏览器窗口。目前，我正在通过进入注册表来应用代理设置：

RegistryKey registry = Registry.CurrentUser.OpenSubKey("Software\Microsoft\Windows\CurrentVersion\Internet Settings", true);
registry.SetValue("ProxyEnable", 1);
registry.SetValue("ProxyServer", "127.0.0.1:8080");

Is going into the registry the bestway to do this, or is there a more recommended approach? I'd like to avoid registry changes if there's an alternative solution.

进入注册表是执行此操作的最佳方法，还是有更推荐的方法？如果有替代解决方案，我想避免更改注册表。

采纳答案by JSB????

This depends somewhat on your exact needs. If you are writing a C# app and simply want to set the default proxy settings that your app will use, use the class System.Net.GlobalProxySelection (http://msdn.microsoft.com/en-us/library/system.net.globalproxyselection.aspx). You can also set the proxy for any particular connection with System.Net.WebProxy (http://msdn.microsoft.com/en-us/library/system.net.webproxy.aspx).

这在某种程度上取决于您的确切需求。如果您正在编写 C# 应用程序并且只想设置您的应用程序将使用的默认代理设置，请使用类 System.Net.GlobalProxySelection ( http://msdn.microsoft.com/en-us/library/system.net .globalproxyselection.aspx）。您还可以为与 System.Net.WebProxy ( http://msdn.microsoft.com/en-us/library/system.net.webproxy.aspx) 的任何特定连接设置代理。

If you actually want to update the proxy settings in the registry, I believe that you'll need to use P/Invoke to call the WinAPI function WinHttpSetDefaultProxyConfiguration (http://msdn.microsoft.com/en-us/library/aa384113.aspx).

如果你真的想更新注册表中的代理设置，我相信你需要使用 P/Invoke 来调用 WinAPI 函数 WinHttpSetDefaultProxyConfiguration ( http://msdn.microsoft.com/en-us/library/aa384113. aspx）。

回答by JaredPar

Check out this KB article specifically tagged at what you're trying to do.

查看这篇 KB 文章，专门标记了您正在尝试执行的操作。

http://support.microsoft.com/kb/226473

http://support.microsoft.com/kb/226473

The short version is you want to use the InternetOpen, InternetSetOption API's to update the proxy settings.

简短版本是您要使用 InternetOpen、InternetSetOption API 来更新代理设置。

回答by chris

from: http://social.msdn.microsoft.com/Forums/en/csharpgeneral/thread/19517edf-8348-438a-a3da-5fbe7a46b61a

来自：http: //social.msdn.microsoft.com/Forums/en/csharpgeneral/thread/19517edf-8348-438a-a3da-5fbe7a46b61a

Add these lines at the beginning of your code:

在代码的开头添加这些行：

using System.Runtime.InteropServices; using Microsoft.Win32;

使用 System.Runtime.InteropServices; 使用 Microsoft.Win32；

    [DllImport("wininet.dll")]
    public static extern bool InternetSetOption(IntPtr hInternet, int dwOption, IntPtr lpBuffer, int dwBufferLength);
    public const int INTERNET_OPTION_SETTINGS_CHANGED = 39;
    public const int INTERNET_OPTION_REFRESH = 37;
    bool settingsReturn, refreshReturn;

And imply the code:

并暗示代码：

        RegKey.SetValue("ProxyServer", YOURPROXY);
        RegKey.SetValue("ProxyEnable", 1);

        // These lines implement the Interface in the beginning of program 
        // They cause the OS to refresh the settings, causing IP to realy update
        settingsReturn = InternetSetOption(IntPtr.Zero, INTERNET_OPTION_SETTINGS_CHANGED, IntPtr.Zero, 0);
        refreshReturn = InternetSetOption(IntPtr.Zero, INTERNET_OPTION_REFRESH, IntPtr.Zero, 0);

回答by Dave

Quick Code example (from msdn):

快速代码示例（来自 msdn）：

WebProxy proxyObject = new WebProxy("http://proxyserver:80/",true);
WebRequest req = WebRequest.Create("http://www.contoso.com");
req.Proxy = proxyObject;

回答by Naim Raja Díaz

You can use this useful method existing since FW 2.0: (i've just discovered and i'm another man now...)

你可以使用这个自 FW 2.0 以来就存在的有用方法：（我刚刚发现，现在我是另一个人......）

http://msdn.microsoft.com/en-us/library/system.net.webrequest.getsystemwebproxy.aspx

http://msdn.microsoft.com/en-us/library/system.net.webrequest.getsystemwebproxy.aspx

回答by 131

I wrote a 10 lines program to do that, feel free to try https://github.com/131/proxytoggle

我写了一个 10 行程序来做到这一点，请随意尝试https://github.com/131/proxytoggle

using System;
using System.Collections.Generic;
using System.Text;
using System.Runtime.InteropServices;
using Microsoft.Win32;

namespace ProxyToggle
{

    class Program
    {

        [DllImport("wininet.dll")]
        public static extern bool InternetSetOption(IntPtr hInternet, int dwOption, IntPtr lpBuffer, int dwBufferLength);
        public const int INTERNET_OPTION_SETTINGS_CHANGED = 39;
        public const int INTERNET_OPTION_REFRESH = 37;


        static void setProxy(string proxyhost, bool proxyEnabled)
        {
            const string userRoot = "HKEY_CURRENT_USER";
            const string subkey = "Software\Microsoft\Windows\CurrentVersion\Internet Settings";
            const string keyName = userRoot + "\" + subkey;

            Registry.SetValue(keyName, "ProxyServer", proxyhost);
            Registry.SetValue(keyName, "ProxyEnable", proxyEnabled?"1": "0");

            // These lines implement the Interface in the beginning of program 
            // They cause the OS to refresh the settings, causing IP to realy update
            InternetSetOption(IntPtr.Zero, INTERNET_OPTION_SETTINGS_CHANGED, IntPtr.Zero, 0);
            InternetSetOption(IntPtr.Zero, INTERNET_OPTION_REFRESH, IntPtr.Zero, 0);
        }

        static void Main(string[] args)
        {
            if (args.Length == 0)
            {
                setProxy("", false);
                return;
            }

            setProxy(args[0], true);
        }
    }
}