System.ObjectDisposedException

[Guest]

Hello,

I´ve a problem with a small line of code.
For my Windows Application I designed a form for exporting data into xml
files.

I´m opening the dialog with:

ExportDialog export = new ExportDialog();
export.Show();

and I´m getting the following exception:

System.ObjectDisposedException was unhandled
Message="Cannot access a disposed object.\r\nObject name:
'ExportDialog'."
Source="System.Windows.Forms"
ObjectName="ExportDialog"
StackTrace:
at System.Windows.Forms.Control.CreateHandle()
at System.Windows.Forms.Form.CreateHandle()
at System.Windows.Forms.Control.get_Handle()
at System.Windows.Forms.Control.SetVisibleCore(Boolean value)
at System.Windows.Forms.Form.SetVisibleCore(Boolean value)
at System.Windows.Forms.Control.Show()
at [...]



What do I do wrong?

Another form, my import dialog works fine with the same lines of code:


ImportDialog import = new ImportDialog();
import.Show();



Regards,

Martin

 

[Tom Porterfield]

Hello,

I´ve a problem with a small line of code.
For my Windows Application I designed a form for exporting data into xml
files.

I´m opening the dialog with:

ExportDialog export = new ExportDialog();
export.Show();

and I´m getting the following exception:

System.ObjectDisposedException was unhandled
Message="Cannot access a disposed object.\r\nObject name:
'ExportDialog'."
Source="System.Windows.Forms"
ObjectName="ExportDialog"
StackTrace:
at System.Windows.Forms.Control.CreateHandle()
at System.Windows.Forms.Form.CreateHandle()
at System.Windows.Forms.Control.get_Handle()
at System.Windows.Forms.Control.SetVisibleCore(Boolean value)
at System.Windows.Forms.Form.SetVisibleCore(Boolean value)
at System.Windows.Forms.Control.Show()
at [...]

What do I do wrong?

Another form, my import dialog works fine with the same lines of code:

ImportDialog import = new ImportDialog();
import.Show();

Where in your form (what method or event) is the ExportDialog code?

 

[=?ISO-8859-1?Q?Martin_P=F6pping?=]

I just found the error.

Because of a copy&paste mistake I had a this.close() in the
Export class constructor.


Regards,
Martin

 

[Tom Porterfield]

I just found the error.

Because of a copy&paste mistake I had a this.close() in the
Export class constructor.

Regards,
Martin

That would cause that type of problem.