mysql - vb.net adding large sum on variable integer -


i created queuing system display multiple counters , queue number of customer , service group when update them, data looks first counter. update function refreshed on timer tick every 1 second updates information.

public sub updatecountera()     openconnect()     sqli = "select  `counter`,  `logconcern`, `logcustcurr`  `access`  logstatus= 1 , counter=1 "     sqlrun()     if mydata.rows.count = 0         countera.text = "avail"         counteracust.text = "avail"         counteraservice.text = "avail"     else         countera.text = mydata.rows(0)(0)         counteracust.text = mydata.rows(0)(1)         counteraservice.text = mydata.rows(0)(2)     end if     closeconnect() end sub  public sub updatecounterb()     openconnect()     sqli = "select   `logconcern`, `logcustcurr`  `access`  logstatus= 1 , counter=2 "     sqlrun()     if mydata1.rows.count = 0         counterb.text = "avail"         counterbcust.text = "avail"         counterbservice.text = "avail"     else         counterb.text = mydata1.rows(0)(0)         counterbcust.text = mydata1.rows(0)(1)         counterbservice.text = mydata1.rows(0)(2)     end if     closeconnect() end sub

every timer tick information of countera shows on counter (counterb, counterc). when try include mydata.clear(), shows error of "no data row position". how can counters update information without compressing info in 1 sql statement , selecting per data row since messy that?

edited add sqlrun() method

yes missing 'counter' added on counterb still shows identical information here sqlrun ():

public sub sqlrun()     'transfer sql connections      sql = sqli      mycommand.connection = conn     mycommand.commandtext = sql     'execute adapter commands     myadapter.selectcommand = mycommand     myadapter.fill(mydata)     myadapter.fill(mydata1)     myadapter.fill(mydata2) end sub


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