[2008] ToolStrip Disappearing From View (in Designer AND Runtime)?

Mar 13, 2009

In my project, I was first using two ListViews with a few buttons on the side to control actions (add files, remove files, etc). Now, I thought it looked neater if I incorporated those buttons into a ToolStrip, and put the ListViews into a SplitContainer.So I did... One SplitContainer, on the left side a ListView (docked Full) + ToolStrip (docked Top), on the right side exactly the same.

All of a sudden, (it seems to be pretty random), the right ListView (never the left one) seems to jump 'on top of' the ToolStrip. It looks as if the Z-Order changes so that the docking screws up, but after looking at the Document Outline, it is all still fine. The ToolStrip just seems to disappear from view completely. I have no idea where it went.Then, when I select the ToolStrip in the Component bar (what is that called? where you can see the control icons only for controls such as Dialogs etc), it suddenly pops up again, in the right place! And the ListView scales down a bit so everything is correct once again...

As soon as I select another control, the Listview jumps back up and the Toolstrip disappears again...At first I thought well, not really a problem since I can just select the ToolStrip from the component bar... Nope... It seems that the ToolStrip is also hidden during
I thought it was just a one-off bug and deleted the whole SplitContainer to build it up again. Five minutes later, it happened again.I decided to throw away to complete project and go back to a slightly older version (with the Buttons instead of the ToolStrip) and try it again.Nope, same problem! I have tried to reproduce the bug in a clean project, but no luck...

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[Code]....

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While I am asking this for VB I verified this issue also occurs in C# so I think it is a .NET issue. I am using Visual Studio 2010 Premium Version 10.0.40219.1 SP1Rel with .NET Version 4.0.30319 SP1Rel.

Step to recreate the problem.
Create a new Windows Application for Visual Basic (WinForms).
Add a ToolStrip.
Add a ToolStripComboBox to the ToolStrip.
Save, note the width of the combo box.
Change the padding on the combo pax to 2.
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[Code]...

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[Code]...

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However, when I want to fine-tune the controls and I go to the View Designer, I get a list of the controls rather than the displayed form. It looks something like this:
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[code]....

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[code].....

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I exit the visual studio 2008 completely and then go back in and the new data is there.

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I really want to make use of the toolstrip and databinding but these two technologies keep conflicting with each other. I think the root cause is something to with the fact that the toolstrip buttons don't recieve focus in the normal way.

I invite you to try the following:-

1. Create a form and put some text boxes a tool strip with a save button on it.

2. Write a query or sproc to get a datatable back and bind your text boxes to the field in the datatable.

3. In the code behind your Save ToolStripButton put some code that makes an arbitrary change to a field on the dataset (it doesn't matter whther this field is bound to a text box or not). eg:-
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