mysql - Getting Connection Error Connection Must Be Valid and Open -


this data access layer don't know why getting connection error when multi user using , when more 1 user access website checked thing cant fix posting code. updated code. again stuck , result same last code. dnt know why happened when more 1 user try access login not working more after 1 2 mints

using system; using system.collections.generic; using system.linq; using system.web; using system.data; using mysql.data; using mysql.data.mysqlclient; using system.configuration;   public class clsmysqlconnection {     public mysqlconnection con = null;      protected mysqlconnection getconnection()     {         if (con == null || con.state != connectionstate.open)         {             con = new mysqlconnection(configurationmanager.connectionstrings["conn"].connectionstring);             con.open();         }         return (con);     } }  public class clsmanagement : clsmysqlconnection {     public datatable getdata(string mysql)     {         mysqlcommand cmd = new mysqlcommand();         mysqldataadapter da = new mysqldataadapter();         datatable dt = new datatable();         cmd.commandtext = mysql;         cmd.connection = getconnection();         da.selectcommand = cmd;         da.fill(dt);         return (dt);     }      public mysqldatareader executeactionquery(string mysql)     {         mysqlcommand cmd = new mysqlcommand();         cmd.commandtext = mysql;         try         {             cmd.connection = getconnection();             cmd.executenonquery();             mysqldatareader rdr = cmd.executereader();             return (rdr);         }         catch (exception)         {             throw;         }                 {             if (con.state == connectionstate.open)                 con.close();         }      }      public int executedml(string mysql)     {         mysqlcommand cmd = new mysqlcommand();         cmd.commandtext = mysql;         try         {             cmd.connection = getconnection();             return cmd.executenonquery();         }         catch (exception)         {             throw;         }                 {             if (con.state == connectionstate.open)                 con.close();         }     } }

you can create new connection , return getconnection() function.

protected mysqlconnection getconnection() {         mysqlconnection con = new mysqlconnection(configurationmanager.connectionstrings["conn"].connectionstring);         con.open(); }

and use con variable in local scope.


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