Access Violation Exception

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I'm using C# windows applications(VS 2010). I create new object from 3rd party ocx as

C#

 Axx.AxView ax = new Axx.AxView();

And I add this to a form dynamically.

                    frmDummy = new Form();
                    frmDummy.Height = 0;
                    frmDummy.Width = 0;
                    frmDummy.Visible = false;
                    frmDummy.ControlBox = false;
                    frmDummy.WindowState = FormWindowState.Minimized;
                    frmDummy.Show();
                    frmDummy.Controls.Add(ax);

When I'm assigning any property to this object exception coming (eg. ax.FileName="sss.xls")
AccessViolationException:
Attempted to read or write protected memory. This is often an indication that other memory is corrupt.

Posted 4-Jul-12 17:03pm

Sanyon_d

Updated 4-Jul-12 18:06pm

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DamithSL · Answer 1 · 2012-07-04T17:16:00

Solution 1

try

C#

frmDummy.Controls.Add(ax);
frmDummy.Show();

Posted 4-Jul-12 17:16pm

DamithSL

Comments

Sanyon_d 5-Jul-12 0:25am

Thanks for reply. It didn't work. This happens only in windows7 platform. In windows xp it works nice. Is there any security settings need to be changed in windows7

Bernhard Hiller · Answer 2 · 2012-07-05T00:13:00

Is that Axx.AxView a 32bit assembly, or does it depend on a 32bit assembly? If so, change the target of your solution to x86.
Does that Third Party control try to write to e.g. C:\Window or other places where an applcation must not write to? Then: no chance to get it running.
There could be a problem with Data Execution Protection - switch it off for test purposes.
If you create an application with it on a Windows XP machine, does that application work on Windows 7?