c# - Insert function to insert record in SQL table working properly but Update Function to Update Record is not working properly -


these functions update student record , insert student record in sql batabase.

public void updatestudent(ref student stu, string rollno) //update values corresponding roll number 'rollno'         {             try             {                 connection.open();  //i have defined connection , command                 command = new sqlcommand("update student set firstname='"+stu.firstname+"',lastname='"+stu.lastname+"',yearofadmission="+stu.yearofadmission+",branch='"+stu.branch+"' rollno='"+rollno+"'", connection); //yearofadmission int                 command.executenonquery();          }         catch (exception)         {             throw;         }                 {             if (connection != null)                 connection.close();         }     } public void insertstudent(ref student s)         {                         try             {                 connection.open();                 command = new sqlcommand("insert student values('"+s.rollno+"','"+ s.firstname+"','"+s.lastname+"',"+s.yearofadmission+",'"+s.branch+"','"+s.password+"')", connection);                                  command.executenonquery();              }             catch (exception)             {                 throw;                        }                         {                 if (connection != null)                     connection.close();             }         }

my second function 'insertstudent' insert value sql table working correctly , inserting values database table. first function 'update student' not updating values in databse table. not providing error either. wrong?


in advance!

check make sure rollno passed update function correct. if command not throwing error, it's executing correctly , ending updating nothing because no record hits supplied rollno.

put break point @ beginning of update function , check supplied value of rollno.

also, roll no. in insert statement subset of 's' whereas in update, provided separately, may need check if that's ok.


Comments

Post a Comment

Popular posts from this blog

curl - PHP fsockopen help required -

i trying work on cloudflare api , have found in documentation. unfortunately have no idea how can use in fsockopen or through curl. here example of post request. need know how can make request below data post using curl or fsockopen curl https://www.cloudflare.com/api_json.html -d 'a=cache_lvl' \ -d 'tkn=8afbe6dea02407989af4dd4c97bb6e25' \ -d 'email=sample@example.com' \ -d 'z=example.com' \ -d 'v=agg' here link cloudflare https://www.cloudflare.com/docs/client-api.html#s4.2 try one: $ch = curl_init("https://www.cloudflare.com/api_json.html"); curl_setopt($ch, curlopt_returntransfer,1); curl_setopt($ch, curlopt_followlocation, 1); curl_setopt($ch, curlopt_ssl_verifypeer,false); // handling of -d curl parameter here. $param = array( 'a' => 'cache_lvl', 'tkn' => '8afbe6dea02407989af4dd4c97bb6e25', 'email' => 'sample@example.com', 'z' =...
Read more

HTTP/1.0 407 Proxy Authentication Required PHP -

i working in restricted network/limited access internet. since have use proxy make web service call. here php code calling web service , response . $client = new soapclient("http: //www.xyz.com/abc/wsdls/login.wsdl", array("trace" => 1, "exceptions" => 1, 'proxy_host' => $proxy_host, 'proxy_port' => $proxy_port, 'proxy_login' => $proxy_login, 'proxy_password' => $proxy_password)); response is fatal error: uncaught soapfault exception: [wsdl] soap-error: parsing wsdl: couldn't load ' http://www.xyz.com/abc/wsdls/login.wsdl ' : failed load external entity if copy url error message , paste in browser(with same proxy settings) works. 2nd scenario is, if pass values instead of variables giving me diffarant response $client = new soapclient("http: //www.xyz.com/abc/wsdls/login.wsdl", array("trace" => 1, "exceptions" => 1, 'proxy_host' ...
Read more

c# - Resource not found error -

i have problem accessing method on homecontroller. show code of method : [httpget] public actionresult decriptidentifiantetredirige(string login_crypter, string mdp_crypter) { string loginacrypter = _globalmanager.protegemotdepasse(login_crypter); string mdpacrypter = _globalmanager.protegemotdepasse(mdp_crypter); user userapp = new models.user(login_crypter, mdp_crypter); if (userapp.authentificationvalidee(userapp.userlogin, userapp.password)) { session["name"] = userapp.userlogin; return redirecttoaction("accueil", "home"); } else { return redirecttoaction("validerauthentification", "home"); } } then in routeconfig.cs wrote route : routes.maproute( name: "authentificationapresdecryptage", url: "{controller}/{action}/{login_crypter}/{mdp_crypter}", defaults: new...
Read more