asp.net mvc - MVC-update takes effect from stored procedure in database side but not from the same sp in c# MVC -

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i have following code, run stored procedure after that. in case, grid not updated, if run stored procedure same values in database, grid gets updated.

i no errors in either case. possible connection aborted database?

[httppost]      public void update_grid(turbinedvce frm)      {           npgsqlconnection con = null;         datatable ds = new datatable();         string cn = system.configuration.configurationmanager.connectionstrings["lts"].connectionstring;         con = new npgsqlconnection(cn);         try         {              var test_publicip = "null";             var test_devicetype = "null";             var test_modelproducer = "null";             var test_description = "null";             var test_username = "null";             var test_password = "null";             var test_phone = "null";             var test_firmwareversion = "null";               if(frm.publicip != null)             {                 test_publicip = "'" + frm.publicip + "'";             }              if (frm.devicetype != null)             {                 test_devicetype = "'" + frm.devicetype + "'";             }             if (frm.modelproducer != null)             {                 test_modelproducer = "'" + frm.modelproducer + "'";             }             if (frm.description != null)             {                 test_description = "'" + frm.description + "'";             }             if (frm.username != null)             {                 test_username = "'" + frm.username + "'";             }             if (frm.password != null)             {                 test_password = "'" + frm.password + "'";             }             if (frm.phone != null)             {                 test_phone = "'" + frm.phone + "'";             }             if (frm.firmwareversion != null)             {                 test_firmwareversion = "'" + frm.publicip + "'";             }               var sql = @"select zd.zd_add_devices_to_turbine(                                                               '" + frm.turbineid+ @"',                                                                                                                             '" + frm.deviceip + @"',                                                               " + test_devicetype + @",                                                               " + test_modelproducer + @",                                                                " + test_description + @",                                                               " + test_username + @"                                                                , " + test_password + @" , " + test_phone + @"   , " + test_publicip + @", " + test_firmwareversion + @")";             npgsqldataadapter adapt = new npgsqldataadapter(sql, cn);                 con.close();             con.dispose();

where executenonquery?





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