Question

Dynamically added controls do not create scrollbar!

Asked by: 1dot44mb

Hi,

I have spent a full work-day to solve this but i was not able to.
Here is my problem:

I use VS 2008 with .NET 3.0 FW and code in VB.Net (Desktop App).

I create a Datagridview(DGV0) in design time then for every customer in db; i create a datagridview("DGV" & CustID) in runtime and add to DGV0 (See the code)

All positioning and styling are done correctly, i have no problem displaying the data the way i want in DataGridView with multiple DataGridViews added to it.

But the problem is there are a total of 17 DataGridViews created (Customer count) and will probably increase as the program is used.
Every datagridview is being added horizontally just next to the datagirdview before itself.
So, the user wants to scroll right (horizontally) to see other Customer details (other datagridviews). But there is not scroll bar created in the main DataGridView (DGV0).

I tried many solutions, none of them work. My idea is to create a HScrollBar control and add to DGV0.
I will appreciate if anyone is able to help.
Thanks.
1.44mb

  • dgvs.jpg
    • 117 KB

    you can see the DGV0(the one with 3 columns on the left) and other DataGridViews (each consists of two columns) added to it. But the user is not able to scroll right.

    you can see the DGV0(the one with 3 columns on the left) and other DataGridViews (each consists of two columns) added to it. But the user is not able to scroll right.

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Asked On
2009-11-04 at 03:59:04ID24870561
Tags

vb.net

,

dynamic

,

control

,

scrollbar

Topics

VB Controls

,

.NET Framework 3.x versions

,

Microsoft Visual Basic.Net

,

.NET

,

Visual Basic Programming

Participating Experts
4
Points
400
Comments
11

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Answers

 

by: roma2208Posted on 2009-11-04 at 04:08:48ID: 25738488

Have you set the scrollbar property of gridview to both ??
Datagridview.scrollbar=both

 

by: 1dot44mbPosted on 2009-11-04 at 04:12:22ID: 25738509

Yes, it is set, actually if i add let's say 50 columns to DGV0 the scrollbar appears and scrolls. But not the dynamically created DataGridViews, it only scrolls its own columns although the DGV's are all in the DGV0.

 

by: five22bagsPosted on 2009-11-04 at 06:21:11ID: 25739490

I would say wrap all the potentially scrollable content in a div and size it absolutely (as in, use a certain amount of pixels rather than a percentage) and see if that will do the trick.

 

by: 1dot44mbPosted on 2009-11-04 at 06:29:24ID: 25739571

Thanks for your comment five22bags but as i stated in the question, this is Desktop App.

 

by: five22bagsPosted on 2009-11-04 at 06:30:05ID: 25739582

Wow, woops. I'm embarrassed thoroughly.

 

by: CodeCruiserPosted on 2009-11-05 at 03:20:48ID: 25748363

Did you try a call to the Refresh method of the DGV?

 

by: 1dot44mbPosted on 2009-11-05 at 05:30:37ID: 25749173

Yes, CodeCruiser, it did not work either. The problem is, these controls do not cause a scroll bar. Because, in my opinion, they are not columns, i think if the width of the columns exceed the width of the dgv, then dgv's hscrollbar appears. So these are controls and they do not cause dgv to draw a hscrollbar, even if they did, it doesn't scroll through controls.

I think what i ask is beyond the capabilities of DGV. So i came up with a solution like this.

Dim DGContainer as New Panel
for i=1 to CustomerCount
DGContainer.Controls.Add("DGV" & i.tostring)
next

After all the DGVs are added in the new panel.
I add the panel to the main DGV.

DGV0.Controls.Add(DGContainer)

and set the AutoScroll property of Panel to True.
And make the Panel backcolor same as DGV0.

So i get what i want, Panel creates scrollbars and scrolls through controls. The panel is inside DGV and the user doesn't understand this. It all seems like just one DGV with spaces and borders between columns. Just like i want.

So i solved my problem, but i will leave the question open because this particular problem is not solved yet. Any help will be appreciated and maybe some other users can find this topic when they need such an assistance.
Thanks.

 

by: robberbaronPosted on 2009-11-06 at 18:16:55ID: 25764698

Comment only.....
thats the way i used to do it in VB6.  Create a frame and add scroll bars . then scroll the contents of the frame via program when user clicks a scroll bar.

 

by: 1dot44mbPosted on 2009-11-07 at 01:28:47ID: 25765569

I'm sorry if i got you wrong. What about the scrollbars of DGV? Ok we can set them to none, but in that case the height of the DGVs has to be as long as the data it contains so another seperate scroll (for each DGV) will not be needed. right?

 

by: robberbaronPosted on 2009-11-07 at 01:31:40ID: 25765581

In my application , I had to manage the showing and actions of the scrollbars within the progam.


Sounds like your Panel option does this for you.
 I was just commenting that I had to use a similar solution some time ago as I couldnt find any better.

20120131-EE-VQP-002

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