winforms - Populating a listview with a DataReader vb.net -


i have make modification application have perfomance issues. ran profiler , 1 of problem one:

a sql query made , stored in datareader. query returns 2000 rows.

then while loop start

dim monsql idatareader  monsql = sql query  while monsql.read   strarray(0) =    strarray(1) =    strarray(2) =    strarray(3) = monsql("something").tostring   strarray(4) = monsql("something").tostring   strarray(5) = monsql("something").tostring    if not isdbnull(monsql("something"))     strarray(6) = (monsql("something"))     strarray(7) = monsql("something")).tostring     strarray(8) = monsql("something").tostring     strarray(9) = monsql("something").tostring     strarray(10) = monsql("something").tostring   end if    objlistitem = new listviewitem(strarray)   objlistitem.tag = lngnolot   listview.items.add(objlistitem) loop

in while loop, data insert in listview

it takes quite time go throught loop (about 10 sec)

what option make things go faster?

try suspending drawing during loop updates:

listview1.beginupdate() // loop listview1.endupdate()

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