Hello all,

I have a strange bug in Visual Studio 2008.

I have developed a complete application with lots of forms containing DatagridViews .
The DatagridViews all have their property "DataSource" pointing to a BindingSource which is in the components tray of the form.
The BindingSources have their property "DataSource" pointing to a class. They are loaded with data on the form Load event.

In most cases, I use the "Edit Columns" fonction of the DatagridView to remove unnecessary columns.

When opening certain forms (not all of them)in Design Mode, I can see that the columns which have been "removed" have now reappeared !!
This happens only on some datagridviews, not all of them.
So, every time I open the form in Design mode, I have to "Remove" columns all over again !

I have not been able to understand what causes this behavior

Please help, I'm getting crazy !

I have had this happen to me as well. I spent several hours trying to figure out any way to prevent this, but to no avail.

I assume it is a bug in the DataGridView control that is causing this. But it is odd in that it only happens in some cases. But it seems once it does happen to one particular DataGridView, it happens again and again and again.

I even compared, line by line, the designer file for a DataGridView that was *not* doing this to one that was and I found no differences.

If anyone else has figured out a way to prevent this ... I'd love to hear about it as well.

I know this does not help ... but at least you now it is not something you did!

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DeborahK,

Yes, exact same thing !
Thanks a lot for this reply, it really helps morale !!
Let's hope it doesn't happen inVS2010 !

Hello Sygrien,

Thanks for your post on MSDN forum.

It seems this is a known issue
https://connect.microsoft.com/VisualStudio/feedback/ViewFeedback.aspx?FeedbackID=278039

The current workaround is to not manually add data bound columns. I will feedback this issue to our product team inan internal channel. You are also welcome to add your supplements to make Microsoft products easier and more powerful to use by adding a ticket in the Connect Portal(https://connect.microsoft.com/VisualStudio)

Thanks,
Rong-Chun Zhang
MSDN Subscriber Support in Forum
If you have any feedback on our support, please contact msdnmg@microsoft.com

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Thanks Zhang,

Then it is a known issue !
It was present in VS2005 and is still there in VS2008...

Also, it seems the bug occurs when columns are either added or removed manually... Really nasty !

Hello Sygrien,

Thanks for your feedback.

I've logged this issue on our internal database, product team will evaluate this in the furture. As we strive to capture any and all product feedback so as to ensure that we are continuously developing Microsoft products to meet customer needs, feedback such as yours is always taken very seriously. It will help us to make our products easier and more powerful to use.

Thanks,
Rong-Chun Zhang
MSDN Subscriber Support in Forum
If you have any feedback on our support, please contact msdnmg@microsoft.com

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Please remember to mark the replies as answers if they help and unmark them if they provide no help.
Welcome to the All-In-One Code Framework! If you have any feedback, please tell us.