1 ================================================================================
2 Windows APPLICATION: CSWebBrowserWithProxy Overview
3 ===============================================================================
5 /////////////////////////////////////////////////////////////////////////////
8 The sample demonstrates how to make WebBrowser use a proxy server.
10 In Internet Explorer 5 and later, Internet options can be set for on a specific
11 connection and process, for example, LAN connection or ADSL connection. Wininet.dll
12 contains 4 extern methods (InternetOpen, InternetCloseHandle, InternetSetOption
13 and InternetQueryOption) to set and retrieve internet settings.
16 /////////////////////////////////////////////////////////////////////////////
19 Step1. Build this project in VS2010.
21 Step2. Set the proxy servers in ProxyList.xml.
25 <ProxyName>Proxy Name</ProxyName>
26 <Address>Proxy url</Address>
31 If the proxy server needs credential, UserName and Password should be specified.
33 Step3. Run CSWebBrowserWithProxy.exe.
35 Step4. Type http://www.whatsmyip.us/ in the top text box, or any web page that could display
38 Step5. Check "No Proxy" and click Go. The browser shows your real IP.
40 Step6. Check "Proxy Server", choose a Proxy Server in the combo box and click Go. The browser
41 shows your IP through the Proxy.
44 /////////////////////////////////////////////////////////////////////////////
47 1. Wrap 4 extern methods (InternetOpen, InternetCloseHandle,
48 InternetSetOption and InternetQueryOption) of wininet.dll, design the
49 structure and initialize the constants used by them.
51 2. Use class WinINet to set proxy, or restore to system internet options.
53 3. The class WebBrowserControl inherits WebBrowser class and has a feature to
54 set proxy server. If the Proxy property is changed, it will call methods
55 of the WinINet class to set the new proxy.
57 4. Initializes the proxy servers in ProxyList.xml when this application starts.
59 5. Set the proxy of the web browser when the "Go" button was clicked and
63 /////////////////////////////////////////////////////////////////////////////
67 http://msdn.microsoft.com/en-us/library/aa385096(VS.85).aspx
69 InternetCloseHandle Function
70 http://msdn.microsoft.com/en-us/library/aa384350(VS.85).aspx
72 InternetSetOption Function
73 http://msdn.microsoft.com/en-us/library/aa385114(VS.85).aspx
75 InternetQueryOption Function
76 http://msdn.microsoft.com/en-us/library/aa385101(VS.85).aspx
78 Setting and Retrieving Internet Options
79 http://msdn.microsoft.com/en-us/library/aa385384(VS.85).aspx
81 How To: Set the proxy for the WebBrowser control in .NET
82 http://blogs.msdn.com/b/jpsanders/archive/2011/04/26/how-to-set-the-proxy-for-the-webbrowser-control-in-net.aspx
85 /////////////////////////////////////////////////////////////////////////////