vb.net - Compare array with SQl table -


for each connection in array called allconn, compare sql table. if exist, add listview. here code below, not seem work:

dim loginfilter object     dim selcurrallsessions sqlclient.sqlcommand = new sqlclient.sqlcommand("select * currallsessions", lfcnn)     selcurrallsessions.commandtype = commandtype.text     loginfilter = selcurrallsessions.executereader      each conn in allconn         while loginfilter.read()              if conn.username.tostring() = loginfilter.item(0)                 listbox1.items.add(loginfilter.item(0))              end if         end while     next

well need change order of loops

while loginfilter.read()     each conn in allconn         if conn.username.tostring() = loginfilter.item(0).tostring             listbox1.items.add(loginfilter.item(0).tostring)             exit         end if     next end while

this necessary because in original code, internal while run till end of data loaded database then, when try check next conn, cannot reposition reader @ start of data loaded database.


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