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Changed by [EMAIL PROTECTED] http://bugzilla.ximian.com/show_bug.cgi?id=78151 --- shadow/78151 2006-04-20 16:57:56.000000000 -0400 +++ shadow/78151.tmp.25913 2006-04-20 16:57:56.000000000 -0400 @@ -0,0 +1,53 @@ +Bug#: 78151 +Product: Mono: Class Libraries +Version: unspecified +OS: +OS Details: +Status: NEW +Resolution: +Severity: +Priority: Major +Component: Windows.Forms +AssignedTo: [EMAIL PROTECTED] +ReportedBy: [EMAIL PROTECTED] +QAContact: [EMAIL PROTECTED] +TargetMilestone: --- +URL: +Cc: +Summary: Really bad ListView performance when the ListView has a huge number of items + +When you add a large/huge number of items to a ListView the ListView +performance for redrawing/updating gets really worse. + +Attached is a testcase that adds 3000 listview items to a ListView. Use the +scrollbar to move through the items and you will see that it takes ages to +redraw/update the ListView. This is even without any images attached to the +items. + +I even got a X error during updating: + +X11 Error encountered: + Error: BadWindow (invalid Window parameter) + Request: 12 (X_ConfigureWindow) + Resource ID: 0x3800019 + Serial: 19360 + Hwnd: Hwnd, Mapped:True ClientWindow:0x3800019, +WholeWindow:0x3800018, Parent:[Hwnd, Mapped:True ClientWindow:0x3800017, +WholeWindow:0x3800016, Parent:[Hwnd, Mapped:True ClientWindow:0x3800007, +WholeWindow:0x3800006, Parent:[<null>]]] + Control: <handle 58720281 non-existant> + at System.Windows.Forms.XplatUIX11.WhereString () + at System.Windows.Forms.XplatUIX11.HandleError () + at System.Windows.Forms.XplatUIX11.HandleError () + at System.Windows.Forms.XplatUIX11.XPending () + at System.Windows.Forms.XplatUIX11.XPending () + at System.Windows.Forms.XplatUIX11.UpdateMessageQueue () + at System.Windows.Forms.XplatUIX11.GetMessage () + at System.Windows.Forms.XplatUI.GetMessage () + at System.Windows.Forms.Application.RunLoop () + at System.Windows.Forms.Application.Run () + at ListViewCase.MainForm.Main () + + +I know that the ListView performance for a larger number of items was good +some time ago. _______________________________________________ mono-bugs maillist - [email protected] http://lists.ximian.com/mailman/listinfo/mono-bugs
