C # Micro Payment refund Query Interface V3.3.6

#region Micro-Payment Refund Enquiry

String Nonce = Createrandomcode (15). ToLower (); Generate 15 Random characters
String sign1 = "appid=" + PayHandle.AppID.ToString () +//AppID of the public number
"&mch_id=" + PayHandle.MechID.ToString () +//merchant number
"&nonce_str=" + nonce +//random string
"&out_trade_no=" + row["Wxo_ocode"]. ToString (); Merchant Order Number
String sign2 = Sign1 + "&key=" + PayHandle.PayKey.ToString (); Merchant key
String sign = T9. UTIL.ENCRYPTUTIL.MD5 (SIGN2, 32). ToUpper (); MD5 encryption
Call the refund query interface
String URL = "Https://api.mch.weixin.qq.com/pay/refundquery";
String requstcontext = "<xml>" +
"<appid><! [cdata["+ PayHandle.AppID.ToString () +"]]></appid> "+
"<mch_id><! [cdata["+ PayHandle.MechID.ToString () +"]]></mch_id> "+
"<nonce_str><! [cdata["+ Nonce +"]]></nonce_str> "+
"<sign><! [cdata["+ sign +"]]></sign> "+
"<out_trade_no><! [cdata["+ row[" Wxo_ocode "]. ToString () + "]]></out_trade_no>" +
"</xml>";
String refundquery = Sendinfo (URL, Requstcontext); Call the method that sends the request to the server

XmlDocument doc = new XmlDocument ();
Doc. LOADXML (Refundquery);
XmlElement rootelement = doc. DocumentElement;
String Code = Rootelement.selectsinglenode ("Return_code"). InnerText; Protocol level judgment
if (Code = = "SUCCESS")//Protocol level verification
{
String result_code = Rootelement.selectsinglenode ("Result_code"). InnerText;
if (Result_code = = "SUCCESS")//Business Level Authentication
{
int count = Convert.ToInt32 (Rootelement.selectsinglenode ("Refund_count"). InnerText);//Refund Record Count
if (Count >= 2)
{
Data processing
}
Else
{
Data processing
}
}
Else
{
This. Clientscript.registerstartupscript (GetType (), "", "&LT;SCRIPT&GT;SHOWFW (' An unknown error, please contact the administrator! ');</script> ");
}
}
Else
{
This. Clientscript.registerstartupscript (GetType (), "", "&LT;SCRIPT&GT;SHOWFW (' An unknown error, please contact the administrator! ');</script> ");
}
#endregion
#region Generate random strings
<summary>
Generate Random string
</summary>
<param name= "Codecount" ></param>
<param name= "Allchar" ></param>
<returns></returns>
public static string Createrandomcode (int codecount)
{
The character that appears in the captcha avoids some easily confusing characters.
String Allchar = "3,4,5,6,7,8,9,a,b,c,d,e,f,g,h,j,k,m,n,p,q,r,s,t,u,w,x,y";
string[] Allchararray = Allchar.split (', ');
String randomcode = "";
int temp =-1;
BOOL Brecreate = (Codecount < 6 && allchararray.length > 15);

Random rand = new Random ();
for (int i = 0; i < Codecount; i++)
{
if (temp! =-1)
{
Rand = new Random (i * temp * ((int) DateTime.Now.Ticks));
}
int t = rand. Next (allchararray.length);
if (temp = = T && brecreate)
{
Return Createrandomcode (Codecount);
}
temp = t;
Randomcode + = allchararray[t];
}
return randomcode;
}
#endregion
#region send information to the server
<summary>
Sending information to the server
</summary>
<param name= "PostURL" ></param>
<param name= "PostData" ></param>
<returns></returns>
public string Sendinfo (string PostURL, String postdata)
{
Stream outstream = null;
Stream instream = null;
StreamReader sr = null;
HttpWebResponse response = null;
HttpWebRequest request = null;
Encoding Encoding = Encoding.UTF8;
byte[] data = encoding. GetBytes (PostData);
Prepare request ...
Try
{
Setting parameters
Request = WebRequest.Create (PostURL) as HttpWebRequest;
Cookiecontainer Cookiecontainer = new Cookiecontainer ();
Request. Cookiecontainer = Cookiecontainer;
Request. AllowAutoRedirect = true;
Request. Method = "POST";
Request. ContentType = "application/x-www-form-urlencoded";
Request. ContentLength = data. Length;
OutStream = Request. GetRequestStream ();
OutStream. Write (data, 0, data. Length);
OutStream. Close ();
Send request and get corresponding response data
Response = Request. GetResponse () as HttpWebResponse;
Until request. The GetResponse () program only starts sending a POST request to the destination Web page
Instream = Response. GetResponseStream ();
sr = new StreamReader (instream, encoding);
Return result Web page (HTML) code
String content = Sr. ReadToEnd ();
string err = string. Empty;
return content;
}
catch (Exception ex)
{
T9. Util.LogUtil.WriteLog (ex. Message + "\ r \ n" + ex. StackTrace, "WebLog");
return string. Empty;
}
}
#endregion

C # Micro Payment refund Query Interface V3.3.6