[Mono-bugs] [Bug 512807] New: DataGridView poor performance for moderate number of records (1000) makes it unusable

[bugzilla_noreply at novell.com]

http://bugzilla.novell.com/show_bug.cgi?id=512807


           Summary: DataGridView poor performance for moderate number of
                    records (1000) makes it unusable
    Classification: Mono
           Product: Mono: Class Libraries
           Version: 2.4.x
          Platform: x86-64
        OS/Version: openSUSE 11.1
            Status: NEW
          Severity: Major
          Priority: P5 - None
         Component: Windows.Forms
        AssignedTo: mono-bugs at lists.ximian.com
        ReportedBy: toni at techni-web.es
         QAContact: mono-bugs at lists.ximian.com
          Found By: Community User


Description of Problem:
The DataGridView have a unusable performance. That is some seconds for 15
records and near 20 minutes for 1000 records. After the data is loaded
performance seems acceptable. 
While calculating, the cpu goes 100% for the application and the OpenSuse 11.1
start bar is locked (but alt+tab works)


Steps to reproduce the problem:
1. 
Fill a DataTable with 20 fields and 1000 records for example.
2. 
Assign the DataTable to the DataSource property of DataGridView. DataGridView
should be visible, of course.


Actual Results:
About 20 minutes of waiting, then, the result is shown. 

Expected Results:
Just for small comparison the Windows .Net framework takes less thank 1 second
for 1000 records and some seconds (not one minute) for one million records.

How often does this happen? 
Allways

Additional Information:

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