拜托C++、C#高手，把下边的代码翻译成C#的

Question

LPWSTRproxyName;inton=1;if(on){proxyName=L"127.0.0.1:3125";}else{proxyName=0;}INTERNET_PER_CONN_OPTION_LISTOptionList;INTERNET_PER_CONN_OPTIONOption[3];unsignedlonglistSize=sizeof(INTERNET_PER_CONN_OPTION_LIST);Option[0].dwOption=INTERNET_PER_CONN_PROXY_SERVER;Option[1].dwOption=INTERNET_PER_CONN_FLAGS;Option[2].dwOption=INTERNET_PER_CONN_PROXY_BYPASS;OptionList.dwSize=sizeof(INTERNET_PER_CONN_OPTION_LIST);OptionList.pszConnection=NULL;OptionList.dwOptionCount=3;OptionList.dwOptionError=0;DWORDproxyType=PROXY_TYPE_DIRECT;//thisproxytypedisablesanyproxyserverif(proxyName){if(proxyName[0]){proxyType=PROXY_TYPE_PROXY;//anamehasbeenpassed,sochoosethecorrectproxytypeforenablingtheproxyserver}}Option[0].Value.pszValue=(LPWSTR)proxyName;Option[1].Value.dwValue=proxyType;if(on){Option[2].Value.pszValue=(LPWSTR)L"";}else{Option[2].Value.pszValue=(LPWSTR)L"";}OptionList.pOptions=Option;if(!InternetSetOption(0,INTERNET_OPTION_PER_CONNECTION_OPTION,&OptionList,listSize)){//handleerror}InternetSetOption(0,INTERNET_OPTION_REFRESH,NULL,NULL);=====================================================就是上边这些代码，如果写成用C#调用WinInet的，应该怎么写？

Answer 1

代码就是设置Proxy地址，在C#里面可以直接使用WebRequest和WebProxy来建立连接和设置代理。
///Reference:
///http://msdn.microsoft.com/en-us/library/system.net.webrequest.proxy(v=vs.110).aspx
///
///Usage:
///createRequestWithProxy("http://www.segmentfault.com","127.0.0.1:3125")
WebRequestcreateRequestWithProxy(string,url,stringproxyAddress){
WebRequestwebRequest=WebRequest.Create(url);
WebProxywebProxy=(WebProxy)webRequest.Proxy;
try{
webProxy.Address=newUri(proxyAddress);
}catch(UriFormatExceptione){
//donothing
}
returnwebRequest;
}
                            

Answer 2

WebRequestreq=WebRequest.Create(url);
req.Proxy=newWebProxy("127.0.0.1:3125");
当然如果是http的话，你也可以用WebClient
WebClientwc=newWebClient();
wc.Proxy=newWebProxy("127.0.0.1:3125");