Re: [Mono-winforms-list] Very slow performance in WinForms ListView
Using BeginUpdate() and EndUpdate() worked well for adding items. But, I still see very slow listview refresh when a column is resized. Do I need to capture these events and add above function calls in the event handler? Basically, the problem is that refresh of listview is very slow. Is there any solution that will fix the list view performance universally(column reszing, scrolling, coming out of screensaver etc.) and not just when I add items. Thanks. -- View this message in context: http://www.nabble.com/Very-slow-performance-in-WinForms-ListView-tp20725159p23162133.html Sent from the Mono - WinForms mailing list archive at Nabble.com. ___ Mono-winforms-list maillist - Mono-winforms-list@lists.ximian.com http://lists.ximian.com/mailman/listinfo/mono-winforms-list
Re: [Mono-winforms-list] Very slow performance in WinForms ListView
I commited some changes some weeks ago (not available in 2.4, but they will be ready for 2.6) that improve the rendering, with less flicker changing columns width/position. But anyway, would you mind filling a bug report with a test case? There are different things that can affect the performance of the ListView, and unfortunately we don't have an universally way to make fast the ListView (such ListView.SuperFast = true). If we have a specific usage scenario, we can try to improve the performance - specially when other users have notified of the bad performance and we have tuned the performance in the past. Carlos. 2009/4/21 jyoti_C# jyoti.b.ko...@intel.com Using BeginUpdate() and EndUpdate() worked well for adding items. But, I still see very slow listview refresh when a column is resized. Do I need to capture these events and add above function calls in the event handler? Basically, the problem is that refresh of listview is very slow. Is there any solution that will fix the list view performance universally(column reszing, scrolling, coming out of screensaver etc.) and not just when I add items. Thanks. -- View this message in context: http://www.nabble.com/Very-slow-performance-in-WinForms-ListView-tp20725159p23162133.html Sent from the Mono - WinForms mailing list archive at Nabble.com. ___ Mono-winforms-list maillist - Mono-winforms-list@lists.ximian.com http://lists.ximian.com/mailman/listinfo/mono-winforms-list ___ Mono-winforms-list maillist - Mono-winforms-list@lists.ximian.com http://lists.ximian.com/mailman/listinfo/mono-winforms-list
Re: [Mono-winforms-list] Very slow performance in WinForms ListView
El 27/11/2008 17:27, JvD escribió: Hello, I'm new to Mono. I have downloaded and installed Mono2 onto Ubuntu V8.04. After that I wrote a small Winforms program adding 100 lines to a listview, repeating that for 10 times. Running the program on WindowsXP, adding 100 lines takes between 15 and 30 msec each time. Running the same program on Ubuntu and Mono the first cycle takes 1,5 seconds and the last one even takes 15 seconds. Can somebody help me in fixing this problem since this performance is way to slow for my application. I'm extensively using ListView (several forms with different listviews with thousands of items each) with Mono 2.4 under Fedora 11 Beta, openSUSE 11.1 and Mono SVN on Ubuntu 9.04 RC. Performance if very good and loading a listview with 5000 items will always take less than a second, even on an old Athlon XP. Although, I can remember a recursion problem that affected the listview some time ago. I don't have access to the Mono source code right now but maybe you or someone else can take a look at the Listview changelog to see when was this recursion problem fixed. Anyway, I'm sure a more recent version of Mono will work. Here are some very straightforward instructions to install Mono 2.4 on Ubuntu: http://blog.ruski.co.za/page/Install-Mono-on-Ubuntu.aspx Regards, Ernesto ___ Mono-winforms-list maillist - Mono-winforms-list@lists.ximian.com http://lists.ximian.com/mailman/listinfo/mono-winforms-list
