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
