Combobox_Change function for combobox's created with .Controls.add function* - vba

Let me start by saying that I have searched far and wide for hours before answering this question.
Situation (all working) -
User is to specify the number of apples in a basket
Example - user specifies 2 apples. This creates two pages within a multipage with comboboxes and textbox's.
The combobox's are populated with a database of apple names. The user chooses one.
Desired:
When a user chooses an apple from the combobox I would like the textbox's on that multipage to populate with the apples characteristics. In other words I need my code to fire any time a user selects an apple from this combobox. This is not a combobox created from the toolbar, so I cant seem to use "private sub Combobox_Change".
Below is the code that I use to create the combobox:
Set ComboBoxL = MultiPage1.Pages(pgCount).Controls.Add("Forms.combobox.1", _
"ComboBoxL" & pgCount)
With ComboBoxL
.Top = 1 * FromTop
.Left = LeftDist
.List = Sheets("TestLightList").Range("A1:A100").Value
This is the code that I use to pull the value into the textbox, it works in testing (just running it in another part of the code) but doesnt work when needed because I dont know how to tell VBA to fire it off when the user selects an item from the combobox above
userform2!textboxC1.Value = Application.index(Range("'TestLightList'!$A$2:$E$500"), _
Application.Match(userform2!ComboBoxL1.Value, Range( _
"'TestLightList'!$A$2:$A$500"), 0), 2)
Note that in this snippit of code im working off of the first combobox. The formula creates a series of them in numerical order.
Thank you!

Related

Number Picker in Access / VBA

I am trying to put a number picker in a form in MS Access 2007. Here's an example of what I am trying to make:
I cannot find this in the default form controls, and have tried to make one myself using a listbox. Listboxes can be modified to look just like the number picker above, however the arrows only change the view, of the list, and not the actual selection (that is the value). For example, with the list box, if I have it range from 1 to 3, and default at 1 - when I change it to 2 via the arrows, the value of the listbox does not change, and is still one.
Does anyone know how to get a number picker in Access?
So you want to create a list of numbers and allow users to change the value displayed (AND stored as the control's value) using up and down arrows, such that they select the next or previous in the list.
I would suggest creating a text box and two buttons. Populate an array with the list of values. When a button is clicked it would:
A. Find the position in the array of any value already entered into the text box (eg loaded from a database)
B. Get the next or previous item from the array.
The array is populated as required (probably when the form is opened).
If you just need to allow the user to enter a whole integer number (ie a number spinner) you would do as follows:
Create one using a (locked) textbox and two buttons. Just add a textbox (name it something like txtValue) and two buttons (btnUp and btnDown), then add code like this to the Click event of those buttons:
Private Sub btnUp_Click()
Me.txtValue = Nz(Me.txtValue, 0) + 1
End Sub
Private Sub btnDown_Click()
Me.txtValue = Nz(Me.txtValue, 0) - 1
End Sub
You could add if statements to limit the data being entered
Or you can use a 3rd party control.
http://www.fmsinc.com/microsoftaccess/controls/components/spin-button/index.html
There are probably more, but be aware that using these sorts of controls in Access is unsupported, and there is no guarantee moving forward that they will work in Access. You're far better off using the native methods described earlier.

Combobox event listener

I'm trying to use the solution given to this issue : Programmatically create event listener in VBA in my particular case :
I programmatically create comboboxes. What I would like to do is to programmatically create a single textbox with a precise label or several texboxes with as many labels next to the generated comboboxes depending on their values.
Here is the code I use to programmatically create those comboboxes :
Set listBoxB1 = Frame1.Controls.Add("Forms.ComboBox.1")
With listBoxB1
.Name = "list" & i
.Height = 15
.Width = 100
.Left = 70
.Top = 10 * i * 3
.AddItem "NUM"
.AddItem "LIST"
End With
So I want that when the user choses the value LIST, a single textbox is displayed next to the combobox with a label and when he or she uses the value NUM, 6 textboxes are created next to the combobox and aligned with it horizontally.
I actually want that the display changes automatically when the user changes the value of the combobox, it would be helpful if you can give some indications about that.
Can you please tell me how I can adapt the solution in the link above to my case, because I'm very new to VBA and don't exactly know how to do that, I have tried to implement the code given but failed.
It really is somewhat involved. This question discusses it: Assign on-click VBA function to a dynamically created button on Excel Userform . The accepted answer contains a trick that I have used many, many times. Create all the controls you will ever need ahead of time (there is only a finite amount of real estate on a form so in practice this will be a reasonably small number) and make them visible (or hide them) dynamically as you need them by controlling the .visible property. It is even possible to have 1 control sit on top of another in the design view with only 1 visible at run time. The visible one at run time will receive the events.

How to pass the value (true/false) of checkboxes created run-time on a userform

I am trying to create a number of checkboxes on a UserForm after reading all the non-empty rows in an excel sheet. That means these checkboxes have to be created in run-time. I also want to put a CommandButton on the UserForm. What I want is that once the user presses this CommandButton, the code should be able to send to a subroutine the information on which checkboxes are checked and what their names are.
Could anyone help me with problem.
Instead of trying to dynamically create checkboxes on a userform (which I'm not even sure is possible) consider using a listbox with a ListStyle of fmListStyleOption and with MultiSelect turned on with fmMultiSelectMulti
Populate the Listbox using the AddItem Method
For i = 0 to 9
Me.lbxDivisions.AddItem
Me.lbxDivisions.List(i) = "Checkbox " & format(i)
Next i
And determine which items are checked via the Selected property:
For i = 0 To lbxDivisions.ListCount - 1
If lbxDivisions.Selected(i) Then
MsgBox "Item " & Format(i) & " is selected and has value " & lbxDivisions.List(i)
End If
Next i
You can programmatically add form controls (check boxes, listboxes, etc) to userforms. From within the form's code module,
Me.Controls.Add "Forms.CheckBox.1", "CheckBox1", True)
From any other code module, just reference the form by name, instead of Me, e.g.,
MyUserForm.Controls.Add "Forms.CheckBox.1", "CheckBox1", True)
Personally I would favor using a more dynamic control (like a list box or combobox) unless your task absolutely requires you to use check boxes. With dynamic controls you need to manage their size, location relative to other controls, resize the userform (if necessary), etc., and although it's kind of possible to add event handling to these controls (see here), that's really limited (e.g., if you expect you need to add 10 check boxes each of which do a different thing, you need to pre-write 10 check box subroutines. If you create 11 check boxes but only 10 pre-written routines, the last check box won't do anything. It would be easier to just create all the check boxes when designing the form, and then programmatically set them to Visible=True or Visible=False as circumstance requires.
So, I'd favor using a dynamic control like a listbox or combobox, but it is possible to add form controls like checkboxes at run-time, if you must.

Multiple Text Box and Lookups

I am currently trying to improve on an Access Database VBA that I have inherited from my predecessor at work. I have come unstuck on a particular form.
I have a form that at the moment is just a large form containing 32 individual textbox, with the same code behind each but it is the same code repeated for each textbox with just the references to the text box changing in each.
Private Sub Cand_No2_AfterUpdate()
Cand_Name2 = DLookup("[Name]", "[qryExamAbsences]", "[Cand_No] = Cand_No2")
End Sub
Then once the button is pressed
If Not IsNull([Cand_Name1]) Then
Rope = Rope & " Or Cand_No = " & [Cand_No1]
End If
(The If statement is contained in the button mousedown event.)
Occurs for each text box which then filters a report that is printed for office use. There are many problems with this but the major one I am trying to solve is that there is an upper limit to the number of entries, if I need to filter more than 32 I would need to delete the text and start again as it were.
Is there a way of combining all this into a single section of code which will create text boxes when needed?
EDIT.
I have found a way to give the impression to the user that the text boxes are being created after each entry which has improved the form from a user standpoint (no longer having 32 textboxes or having to scroll down to the Print Button.) however this still hasn't solved the issue of messy code as I have had to repeat the extra code for each box again, it also leaves me with the maximum of 32 entries still.
The new code is as follows:
If Not IsNull(Cand_Name1.value) Then
Cand_No2.Visible = True
Cand_Name2.Visible = True
cmdPrint.Top = 2500
cmdPrint.Left = 2500
DoCmd.MoveSize 1440, 2201, , 4000
Else
Cand_No2.Visible = False
Cand_Name2.Visible = False
cmdPrint.Top = 2000
DoCmd.MoveSize 1440, 2201, , 3500
End If
Essentially makes the next text box visible and moves the print button down to make room for the new text boxes. It also expands the window.
Could you not just have 2 text boxes, one for CAND_NO and another for CAND_NAME and then beside those two boxes place an ADD CAND_NO button.
Create a list box that would list every CAND_NO / CAND_NAME after they press the add button so they can see what they've added so far. Then loop through your list box to build your rope string or have your rope string either a global variable on the form and build it as they add numbers or stored in a hidden text box storing the value as they add numbers if you don't like global.

VB in Access: Combo Box Values are not visible in form view but are visible through Debug.Print

Code in Form onLoad:
country_combo.RowSourceType = "Value List"
Code in a reset function:
Dim lListIndex As Long
With Me.country_combo
For lListIndex = .ListCount - 1 To 0 Step -1
.RemoveItem (lListIndex)
Next lListIndex<br/>
End With
Code to populate country combo:
*For n = 1 To numCountries*
*countryCombo.AddItem (countryRS.Fields("countryName"))*
*countryRS.MoveNext*
*Next n*
I'm having a problem that occurs AFTER the code to populate the country combobox runs. The values are there as I can run Debug.Print(countryCombo.Value) and it prints out the name of the selected country, but I can't see the values in the combobox at all. They're invisible, and as far as I know there is no visiblity property for specific items, unless I'm completely mistaken.
comboBoxError.png http://img110.imageshack.us/my.php?image=comboboxerror.png
I think you should probably use Access's GUI tools to do what you're looking for. In design mode, click on the field you are trying to populate, then click the "lookup" tab. You can then specify a table to populate the field with and your forms should automaticly update as well.
I've also seen what you describe here - as far as I can tell, it's a bug within Access (I was using 2007) that only occurs when you programatically mess with the contents of a combo box. It does not happen every time. The issue corrects itself if you highlight the text that is in the combo box.
I am experiencing a similar issue with Access 2003. Based on the selection of one combo box, the row source of a listbox is set to an SQL string Basically a SELECT DISTINCT [MyField_Selected] FROM MyTable. For some fields the values are visible in the list box and others it is not. The values are there however as I can access them via code. To make it more interesting it works fine in Access 2007.
Just found the resolution on another forum. Check the format property of the field(s) in question on the table. In my case, when Access 2007 created the table, it put an # format in there. I removed that and all works great!