Thanks guys for your help. Its true only 0.01% of lines is shown in the box, so I realized it by showing only the lines which are shown at a moment. So I also could solve the scrolling problem.......
Thanks a lot again. 2010/11/14 Davej <galt...@hotmail.com> > Uh, aren't 99% of these lines going to be off screen anyway? Why not > have the textbox with two scroll buttons? Probably are several ways to > do that, maybe textbox1.txt = code.substring(i,j) or an array of > strings (lines). > > > On Nov 10, 7:45 am, Michael Busch <michael.n.bu...@googlemail.com> > wrote: > > Hi Guys. > > > > I have a problem, hopefully you can help me. > > > > I am working with automation software and on my HMI software I have a > small > > performance problem. > > Sometimes it is possible to show the code of a control program, what it > > (sometimes) about 145,000 lines (or more). > > > > It comes out of the control as one string. > > > > I tried to show the code in a textbox, but this takes about one minute to > > show up. My HMI is frozen during the time. > > Yes, I am using a background worker (async), so I dont understand why it > > freezes up the whole HMI. > > (its only the line filling the multiline textbox). > > The code in this case is only one line: > > > > >> textbox1.text = codefromControl.code; > > > > So, I changes to code to a stringbuilder, which is filling the textbox. > > I splited the text up in lines, and tried different ways to fill up the > > textbox (trying as less refreshes of the textbox as possible). > > > > The best performance I got was 10,000 lines in 0.7 sec. > > But this means its still 15sec to load the screen (its frozen in all > > scenarios with my background worker, and I dont know why). > > > > So, I need to know > > > > - how can add my controlcode to the textbox with the best performance? > > - some ideas ( I know I dont posted code) why writing to the textbox > freezes > > my HMI and why my background worker isnt working? > > - some ideas to increase performace? perhaps different control - > listview, > > richtextbox, etc? > > - How can I realize that the screen is loaded, the first e.g. 1000 lines > are > > displayed and the rest is loaded in the background ( I tried this out for > a > > couple os days, but I got it never running (see the other problems, its > > always freezing up). > > > > Thanks a lot th everybody in advance. > > > > Mike >
