c# - In winform button needs to be clicked twice for firing event -

i have buttton on click event of calling function.i have set accept button property button.but not firing event on single click.

 private void btnconnect_click(object sender, eventargs e)  {         try         {             //function call validating textboxes entry             validateform();              if(lblmessage.text != string.empty)             {                 //function call binding dropdown db names                  binddbdropdown();                  //function call binding operation names in dropdown                  setoperationdropdown();             }             else             {                 //else give error message user                 lblmessage.text = "invalid credentials";             }         }         catch(exception ex)         {             //all exceptions handled , written in eventlog.             eventlog log = new eventlog("application");             log.source = "mfdbanalyser";             log.writeentry(ex.message);         }     }   public void binddbdropdown() {          sqlconnectionstringbuilder objconnectionstring = new sqlconnectionstringbuilder();         objconnectionstring.datasource = txthost.text;         objconnectionstring.userid = txtusername.text;         objconnectionstring.password = txtpassword.text;          sqlconnection sconnection = new sqlconnection(objconnectionstring.connectionstring);          //if connected give message user         lblmessage.visible = true;         lblmessage.text = "you connected sql server....";          try         {             //to open connection.             sconnection.open();              //query select list of databases.             string selectdatabasenames = @"select                                                  name                                                                                                [master]..[sysdatabases]";              //create command object             sqlcommand scommand = new sqlcommand(selectdatabasenames, sconnection);              //create data set              dataset sdataset = new dataset("master..sysdatabases");              //create dataadapter object             sqldataadapter sdataadapter = new sqldataadapter(selectdatabasenames, sconnection);             sdataadapter.tablemappings.add("table", "master..sysdatabases");              //fill dataset             sdataadapter.fill(sdataset);              //bind database names in combobox             dataviewmanager dsv = sdataset.defaultviewmanager;              //provides master mapping between sourcr table , system.data.datatable             cmbdatabases.datasource = sdataset.tables["master..sysdatabases"];             cmbdatabases.displaymember = "name";             cmbdatabases.valuemember = ("name");         }         catch(exception ex)         {             //all exceptions handled , written in eventlog.             eventlog logexception = new eventlog("application");             logexception.source = "mfdbanalyser";             logexception.writeentry(ex.message);             messagebox.show ("login failed!!", "error occured");         }                 {             //if connection not closed close connection             if(sconnection.state != connectionstate.closed)             {                 sconnection.close();             }         }     } 

can me out??

uh, on first click, lblmessage contain text?

because if not, first time run it, fail conditional test , insert string "invalid credentials" label. then, second time run it, pass conditional test , call binddbdropdown method you're expecting.

specifically, section of code:

if(lblmessage.text != string.empty) {     //function call binding dropdown db names      binddbdropdown();      //function call binding operation names in dropdown      setoperationdropdown(); } else {     //else give error message user     lblmessage.text = "invalid credentials"; } 

i assume you're either trying check contents of textbox user has entered credentials not empty, or want make sure error message not displayed in lblmessage. make sure code accurately reflects intentions!