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.


Comments

Post a Comment

Popular posts from this blog

python Tkinter Capturing keyboard events save as one single string -

is possible store keyboard events 1 string? code below stores 1 char , prints it. card reader or bar code reader, contains collection of character/ string not 1 character @ time. goal save char pressed text variable. from tkinter import * root = tk() def key(event): text= event.char text+= event.char print ("pressed", text) def callback(event): frame.focus_set() print ("clicked at", event.x, event.y) frame = frame(root, width=100, height=100) frame.bind("<key>", key) frame.bind("<button-1>", callback) frame.pack() root.mainloop() currently, creating text variable , everytime key() function gets called, , text stores last character typed. you can define text module level variable , , use module level text inside key function - text = '' def key(event): global text text+= event.char print("pressed", text)
Read more

android - InAppBilling registering BroadcastReceiver in AndroidManifest -

i'm implementing inapp billing in android app. works well, however, i'm trying decouple broadcast receiver activity manifest. suggestion in android's trivialdrive sample: // important: dynamically register broadcast messages updated purchases. // register receiver here instead of <receiver> in manifest // because call getpurchases() @ startup, therefore can ignore // broadcasts sent while app isn't running. // note: registering listener in activity bad idea, done here // because sample. regardless, receiver must registered after // iabhelper setup, before first call getpurchases(). currently there's class extends broadcastreceiver : public class iabbroadcastreceiver extends broadcastreceiver { /** * intent action receiver should filter for. */ public static final string action = "com.android.vending.billing.purchases_updated"; private final iabbroadcastlistener mlistener; public iabbroadcastreceiver(iabbroadcastlistener listener) { m
Read more

javascript - Z-index in d3.js -

i have map , when hover effect on region of map below yellow line , circle, last ones disappear. how can solve problem? http://jsfiddle.net/ot21n9qx/ var arc = g.append("path") .style("fill", "none") .style("stroke", "yellow") .style("stroke-width", 2) .attr("d", "m" + pathorigin[0] + "," + pathorigin[1] + " q" + svgpoint[0] + "," + pathorigin[1] + " " + svgpoint[0] + "," + svgpoint[1]); var circlesize = d3.scale.linear() .domain([0, 0.5, 1]) .range([4, 10, 4]); svg not have z order draws objects in order created. need create path , circle after create highlight regions. here forked fiddle: http://jsfiddle.net/o00fzgaf/1/
Read more