[Mono-bugs] [Bug 657628] New: Setting ScrollBar.Maximum wrongly sets the Value property

bugzilla_noreply at novell.com bugzilla_noreply at novell.com
Sun Dec 5 16:37:19 EST 2010



           Summary: Setting ScrollBar.Maximum wrongly sets the Value
    Classification: Mono
           Product: Mono: Class Libraries
           Version: 2.8.x
          Platform: All
        OS/Version: All
            Status: NEW
          Severity: Normal
          Priority: P5 - None
         Component: Windows.Forms
        AssignedTo: mono-bugs at lists.ximian.com
        ReportedBy: stifu at free.fr
         QAContact: mono-bugs at lists.ximian.com
          Found By: ---
           Blocker: ---

Created an attachment (id=403495)
 --> (http://bugzilla.novell.com/attachment.cgi?id=403495)
Test case

User-Agent:       Mozilla/5.0 (Windows NT 5.1; rv:2.0b8pre) Gecko/20101205

First off, it's impossible for the user to reach the maximum value of a scroll
bar. This is intended, works as expected with .NET and Mono, and is described

To sum things up, the maximum value you can normally reach is Maximum -
LargeChange + 1.

However, with this code:

this.hScrollBar1.Value = 100;
this.vScrollBar1.Value = 100;
this.hScrollBar1.Maximum = 50;
this.vScrollBar1.Maximum = 50;

With .NET, the Value of both scroll bars becomes 50. Not with Mono, though,
which acts as if the value had been set via normal user interaction, making the
value 41 (50 - 10 + 1).

Reproducible: Always

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