微信退款证书使用c#

微信退款需要证书

data为已封装好的xml数据

具体怎么封装>

 1 　　　　public string get(string data) 
 2  　　　　　　{
 3             string cert = @"d:\certificate\apiclient_cert.p12"; //证书位置
 4             string password = "11100011";//证书密码
 5             string url = "https://api.mch.weixin.qq.com/secapi/pay/refund";//请求地址
 6             servicepointmanager.servercertificatevalidationcallback=new 
 7             remotecertificatevalidationcallback(checkvalidationresult); 
 8             x509certificate cer = new x509certificate(cert, password); 
 9             httpwebrequest webrequest = (httpwebrequest)httpwebrequest.create(url); 
10             webrequest.clientcertificates.add(cer);
11             byte[] bs = encoding.utf8.getbytes(data);
12 
13             webrequest.method = "post";
14             webrequest.contenttype = "application/x-www-form-urlencoded";
15             webrequest.contentlength = bs.length;
16             //提交请求数据
17             stream reqstream = webrequest.getrequeststream();
18             reqstream.write(bs, 0, bs.length);
19             reqstream.close();
20             //接收返回的页面，必须的，不能省略
21             webresponse wr = webrequest.getresponse();
22             system.io.stream respstream = wr.getresponsestream();
23             system.io.streamreader reader = new system.io.streamreader(respstream, system.text.encoding.getencoding("utf-8"));
24             string t = reader.readtoend();
25             system.web.httpcontext.current.response.write(t);
26             wr.close();
27 
28             return t;
29             
30 
31 
32             }
33 
34         private static bool checkvalidationresult(object sender, x509certificate certificate, x509chain chain, sslpolicyerrors errors)
35         {
36             if (errors == sslpolicyerrors.none)
37                 return true;
38             return false;
39         }