StrataFrame Forum » StrataFrame Application Framework - V1 » Issues » DropDownStyle of bound Combobox is always DropDownList

DropDownStyle of bound Combobox is always DropDownList

Greg McGuffey — Mon, 18 May 2009 07:07:18 GMT

I can't seem to get a combo that is bound to have a drop down style other than DropDownList (i.e. only values in list can be selected...no random typing allowed).

This is related to binding. If the combo is unbound, then when the style is set to DropDown, I can type arbitrary values into the combo.

However, if the combo is bound, the style becomes DropDownList (no matter what I set at design time).

I checked the source code (I'm not on the latest beta currently :( ) and in the BindingEditable property is manipulating the drop down style. I'm thinking it isn't handling the original style correctly and just ends up setting it to drop down list.

The workaround is to set the combo to ignore editing changes and manage that yourself if needed.

RE: DropDownStyle of bound Combobox is always DropDownList

Trent L. Taylor — Mon, 18 May 2009 07:07:18 GMT

Well, thanks to Microsoft and their infinite inconsistency on their combo, we made a change a LONG time ago that swaps the DropDownState based on the editing state so the contol would look the same in a disabled state. However, I do not think that we ever set it to Simple (I will verify this). However, I was unable to reproduce the behavior you described. If you could post a sample reproducing this it would be helpful. Thanks!

RE: DropDownStyle of bound Combobox is always DropDownList

Geoff Hirst — Fri, 15 May 2009 10:35:47 GMT

Guys,

I got a weird thing happening, opposite way to the guys above. My concern is that I am on Mondays beta.

I have a combobox set to DropDown - Dropdownstyle. When the record is idle, the control looks exactly how I would expect. Then when I go into Edit mode, it the style changes to Simple. I have tracked this as the control is on a tab control and I have placed a breakpoint on the selectedpagechanged event and I can see my control has it's dropdownstyle changed.

This is kind of opposite to what the guys are saying above.

I have kind of worked around it by testing the editingstate and I can see that the control is getting changed to simple, and I reset it back to Dropdown.

something is a bit odd here.

thanks in advance (Also more than happy to be told I have done something daft)

best

Geoff.

RE: DropDownStyle of bound Combobox is always DropDownList

Trent L. Taylor — Mon, 13 Apr 2009 08:17:07 GMT

Glad to hear it...I thought that this had been addressed....thus the head scratching :D

RE: DropDownStyle of bound Combobox is always DropDownList

Charles R Hankey — Sat, 11 Apr 2009 20:27:40 GMT

Hi Trent

Just installed the latest Beta and this is indeed working properly. Thanks!

(It may have been fixed earlier than the last build as I just realized I had not installed the January build :blush: )

RE: DropDownStyle of bound Combobox is always DropDownList

Trent L. Taylor — Wed, 08 Apr 2009 09:00:44 GMT

Greg, this appears to be woking as it should. Below is a link to a video that shows this in action. I do recall fixed something in this regard a while back, so you may want to download the most recent beta to see if it resolves the issue in your scenario.

http://www.strataframe.net/downloads/boundcombo.zip

RE: DropDownStyle of bound Combobox is always DropDownList

Greg McGuffey — Tue, 07 Apr 2009 13:21:27 GMT

Bump...this appears to be a bug and I'd like to know if that is the case and that is on the list of fix :P

RE: DropDownStyle of bound Combobox is always DropDownList

Charles R Hankey — Sat, 04 Apr 2009 20:36:05 GMT

If you set the ignoremanagereadonlystate to true you get a cbo you can type in but unlike the textboxes, you can type in it when you are not in an editing state. So yes, the managing is what is setting the dropdown to dropdownlist.

So far the code about is the only answer I've found to get the CBO dropdown to behave like other controls (except for it looking disabled when not in editing mode). Not a huge deal, but would probably be good to look at for any refactoring of the managing of edit state in the future. :)

RE: DropDownStyle of bound Combobox is always DropDownList

Trent L. Taylor — Sat, 04 Apr 2009 12:59:19 GMT

Do you get the same behavior if you set the IgnoreManageReadonlyState to True?

RE: DropDownStyle of bound Combobox is always DropDownList

Charles R Hankey — Fri, 03 Apr 2009 19:06:11 GMT

This is my current work-around but I am open to suggestion. It seems comboboxes do not have a readonly property so enabled seems the other option. Is there a property that will not dim the cbo if it is disabled?

[codesnippet] Private Sub ClientMaintenanceBO1_EditingStateChanged( _
ByVal e As _
MicroFour.StrataFrame.Business.EditingStateChangedEventArgs) _
Handles ClientMaintenanceBO1.EditingStateChanged

Select Case e.EditingState()
Case BusinessEditingState.Editing
Me.cboReferral.Enabled = True
Case BusinessEditingState.Adding
Me.cboReferral.Enabled = True
Case Else
Me.cboReferral.Enabled = False
End Select

End Sub[/codesnippet]

TIA

Charles

RE: DropDownStyle of bound Combobox is always DropDownList

Charles R Hankey — Fri, 03 Apr 2009 11:20:46 GMT

Bump

Trent - can this go on the bugfix list (or is it perhaps addressed in latest beta?) Definitely only happens when SF manages the readonly state