C# 微信支付证书使用

string cert = @"R:\apiclient_cert.p12"; 
string password = "10010000"; 
ServicePointManager.ServerCertificateValidationCallback=new 
RemoteCertificateValidationCallback(CheckValidationResult); 
X509Certificate cer = new X509Certificate(cert, password); 
HttpWebRequest webrequest = (HttpWebRequest)HttpWebRequest.Create(url); 
webrequest.ClientCertificates.Add(cer);
webrequest.Method = "post"; 
HttpWebResponse webreponse = (HttpWebResponse)webrequest.GetResponse(); 
Stream stream = webreponse.GetResponseStream(); 
 
/*CheckValidationResult
的定义
*/ 
private static bool CheckValidationResult(object sender, 
X509Certificate certificate, X509Chain chain, SslPolicyErrors errors) 
{ 
if (errors == SslPolicyErrors.None) 
return true; 
return false; 
}