Forms :: Combo Box Value Triggering NULL
Jun 25, 2015
I have a combo box in a form which simply pulls a text field from a single table - approximately 100 values to choose from. On the After Update Event, there is a basic "If null this, else that" VBA which just hides a subform if the value is null. This works fine, except there are a handful of values (I've found at least 6) that when chosen, trigger the NULL portion of the code! All the values are very similar, so I don't know what the problem is - for example, the value "D-11" works, but neither "D-10" nor "D-12" does.
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Oct 26, 2004
I'm trying to get one combo box control what tables are available from another combo box. Example, combo box (a) includes numbers 1-5. Selecting (1) makes the data in combo box (b) specific to that selection. Selecting (2) makes the data in combo box (b) something different (pulls data from a different table).
Can anyone help me with this? Thanks!
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Aug 18, 2014
I have a main form that holds a tab control with a number of sub forms. One of these subforms has a pop up form for adding new records to it. After closing this pop up form I would like to initate code on the sub form where the new record now will appear. One of the things I like to do is simply to set focus to the record the user just added.
My problem is that I cannot seem to get any event to trigger in this setting (bben trying more or less all). If I understand things right the fact that I am using a pop up form and the fact that I am using a tab control both seem to interfer with the Activate event and making it passive.
How I can trigger code on the sub form (after closing the "Add New" pop up form)?
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Apr 1, 2014
We just upgraded to Office 2010 from 2003 and I am now getting 'invalid use of null' after choosing a valid combo box option. When I debug, the line that highlights has to do with a text box on the form rather than the combo box. Here's the code highlighting:
frmLines = Me.WorkLoadUnit
This is the code in it's entirety.
Private Sub fsubProductivityInput_Calculations()
On Error GoTo err
'Calculate Breaks and Net Hours
Dim frmLines As Double
Dim frmHours As Double
Dim frmLPH As Double
[code]....
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Jun 1, 2014
I have a form, form1. Inside there is a combo box, cbo1, that gets its values from table1.On form load, I want an expression that checks if table1 has any values to "send" to cbo1. If yes, meaning, if after form loads cbo1 is loaded with table1's values, I want cbo1 colored RED, if not, colored WHITE.
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Mar 14, 2013
I am assigning a recordset using vbs code. The variable "CB_proj" is a combobox value. The problem comes when the combobox is null, the program errors out and even if I try to exit the routine with an if statement, it still compiles the line of code and errors out because the object doesn't exist. how I can get it to not compile that error if my combo box value is null?
CB_proj = Forms!CC_MAIN.CB_proj
strSQL = "SELECT " & [CB_proj] & ".* FROM " & [CB_proj] & ";"
Forms!CC_MAIN.projdat.Form.RecordSource = strSQL
Forms!CC_MAIN.projdat.Form.Requery
Forms!CC_MAIN.Form.Requery
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Aug 27, 2014
I have a SQL Server 2005 backend table with a varchar(1) field which allows nulls. The field is populated from a combo box in Access 2012. The field can be set to 1,2 or 3 via the combo box or left blank in which case its value will be null. Sometimes I need to reset this field to null. How can I do this via a combo box? I know I could just set this to an empty string but this would mean re-writing a load of queries which a looking for a number or null.
Something like 1;"First";2;"Second";3;"Third";Null;"Blank"
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Apr 3, 2008
I am having problems with setting up a set of combo boxes.
What I am trying to do is if combo Productline is empty then in combo PartNumber would show all products but if combo Productline has a value selected then in the combo partnumber would only be able to select the partnumbers in that productline.
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Jun 23, 2006
Access front end, SQL Server backend.
----
I have a continuous subform (part of a tab control on a main form) whose name and sourceobject are both "sbfCannulae". There are about 10 fields on the subform, and all are bound to fields in a table. The primary key of this table must be generated by combining two other fields, which must happen just before the record is saved. (I know calculated data should not usually be saved in tables, but trust me. In this case it is necessary.)
Right now the user COULD enter data into the primary key-bound textbox, but since the user is me, I make sure not to do that.
When I enter data into all fields except the primary key, I get an error because the primary key cannot contains nulls...of course.
I use the following code to tell me when an event has been triggered.
Code associated with sbfCannulae:
Option Compare Database
Private Sub Form_Activate()
MsgBox "cann activate"
End Sub
Private Sub Form_BeforeInsert(Cancel As Integer)
MsgBox "cann before insert"
End Sub
Private Sub Form_BeforeUpdate(Cancel As Integer)
MsgBox "cann before update"
End Sub
Private Sub Form_Current()
MsgBox "cann current"
End Sub
Private Sub Form_Dirty(Cancel As Integer)
MsgBox "cann dirty"
End Sub
When I enter data into a new record, the Dirty event is triggered, but I cannot for the life of me figure out how to trigger any of the other events. No combination of values and nulls in any fields, clicking in other tabs, clicking to other records, or using the navigation buttons will ever trigger any events but Dirty.
The only msgbox I ever get is the one giving delivering the SQL error about the primary keys not taking null values.
What am I doing wrong?
-Matt
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Aug 16, 2005
Hello one and all
It may seem a rather simple question, though it continues to confound me -and I have searched to no avail :D
How do you trigger an event depending on what button is pressed on a msgbox?
For example, using a vbYesNo msgbox on a form, how can I assign events to either the Yes or the No option? Say, if "Yes" is clicked the focus would be set to a control on the form, and if "No" is clicked access would close down.
Any ideas?
I've currently got on the on click event of a command button (the bit in italics is fine, the bit in bold is not working!):-
Private Sub Command3_Click()
On Error GoTo Err_Command3_Click
Dim stDocName As String
MsgBox "Please select where you wish to save the exported file", vbOKOnly, "Save To Location"
stDocName = Month.Value
DoCmd.OutputTo acTable, stDocName, acFormatXLS
MsgBox "Do you want to select another History Extract?", vbYesNo, "Do you wish to continue?"
If intresponse = vbNo Then
DoCmd.Close
Else
Month.SetFocus
End If
Exit_Command3_Click:
Exit Sub
Err_Command3_Click:
MsgBox Err.Description
Resume Exit_Command3_Click
End Sub
But whether Yes or No is selected, the focus returns to the current form.
Cheers for any ideas
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Apr 25, 2007
I have field in my table, which is required (in access, or not allow null sql server), and have defaults of 0.
I have a form with a combo box bound (thru query) to this field - how do I let the user choose something from the list and then decide they actually didn't want to choose anything - and so clear the list.
Hear I get an error saying the field cannot accept null - how do I just force it to accept 0 - ie no choice??
Thanks
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Mar 4, 2005
I have a form in my database that opens by default. I want to trigger a yes/no (yes would run a query, no would end) popup based on the value of a field in a table or query (i.e. if "now" is fifteen days past date in the table/query).
Any help would be most appreciated.
-Eric
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Jul 14, 2005
As above, I've noticed that it will only trigger if there are no textboxes on the form with a higher tab index than the control the keyascii is set for. Any ideas why, or what I'm doing wrong?
I've found this a lot and never bothered trying to find a solution till now. :p
Gareth
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Nov 19, 2012
i have list box which lists all active records. raw source is based from Main Query which lists all active records from current user. on click even of list box i have macro that goes on record selected in list box, which is working fine.on current event of main form function is called. Main Query order by id Desc, list box order by is Asc problem is when i click on last field in List Box which takes me to record, On Current event does not trigger on main form. if i use Record Selector on main form to go to that same record,On Current triggers.
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Aug 2, 2005
Hello!
Looks like a grate forum for access topics and thats exactly what I need now! I'm new to Access and are going grazy!!
I'm trying to add some functions to an excisting database that someone else has done.
The Form creates an report from an db containing a one per day status information from water and electrical meters. Filling in start and stop dates gives a nice report over all meters and their status.
Now I want to add a combo box so the user can select one meter or leaving it empty to get all meters. I can make it work when selecting one meter in the list, but leaving it empty shows none. Or selecting any don't help all of the meters shows up anyway.
I used the search engine on this forum and found similar problem, but couldn't figure it out. Tried many combinations of the IIF statement, but didn't help.
Please help me!!
/Anttu
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Jul 28, 2015
we have gotten in to a routine of copying, pasting and bastardizing old databases instead of creating new ones from scratch - and we've had a problem recently where we've started off with one master database back in 2011, which has then been the base for practically every single major DB we've created ever since.So this month we've copied and pasted (again) and started adding new features to what's already there, and the thing has corrupted. I've copied and pasted the same version three times and added all the new bits, and the same thing has happened every time.
So this time I've copied and pasted and tried my best to clean up, get rid of the dead weight and (where necessary) create completely new objects, split into FE and BE versions etc, and I've reduced the overall weight of the DB by about 50%.Due to time constraints I now need to crack on and get this thing working again and, for the most part, it does - but now I'm having trouble carrying the filter over from the OnClick Event of a form button to the next form it's opening.
We're using the DB to record attendees at an Event we're running later in the year. This is the code that I'm running from the OnClick Event of the button on Form1:
Code:
Private Sub btnBkg_Click()
On Error GoTo Err_btnBkg_Click
Dim stDocName, vFilt As String
Dim vBkgRef As Long
Dim vContactID As Long
[code]....
You can see I've tried to use vFilt instead of the actual code for frmBooking's Where Condition, but for some reason it does not carry over to the form whichever way I try - when I open the immediate window and type ?vFilt it returns a blank entry. Not sure how to show the 'Where Condition' in the Immediate Window?Before Update, Open and Activate of frmBooking, but I'm hoping that the problem lies with what I've posted up here, as I don't want to get into posting the frmBooking code...
It may be worth noting that the button resides in the Header of a continuous form, with conditional formatting that changes the button caption depending on whether there is a value in the BkgRef text box of the record that has the focus.
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Feb 11, 2006
Hello All,
I’m using a combo box for the criteria for a saved query. Is there any way to show all the records if the combo box value is either “0” or null?
Thanks,
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Jul 30, 2007
I have a form that using a combo box to select specific record, sometimes we need to see all records, i would like if the combo box if left empty to return all records. I typed this expression but it returns no records when combo box is empty.
IIf([Forms]![FrmReports]![LoanOfficer]="IsNull","*",[Forms]![FrmReports]![LoanOfficer])
If i use this expression i get the wrong results when a Loan Officer ID is enterd;
LIke([Forms]![FrmReports]![LoanOfficer] & *
Example of wrong results, if Loan officer Id is 1, then it returns loan officers 1,11, 111
Thanks in advance for any help
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Sep 22, 2013
Windows vista
Access 2007
I can't seem to figure out how to test a combo box null value.I try:
Code:
If IsNull(Me.cboManufacturer) Then
MsgBox ("Please select category")
Else
DoCmd.OpenReport "rptItemCategory", acViewPreview
End If
This works if the combo box IS NOT NULL, but if null it gives me:
PHP Code:
Run-time error '3071': This expression is typed incorrectly, or it is too complex to be evaluated.Â
For example, a numeric expression may contain too many complicated elements.Â
Try simplifying the expression by assigning parts of the expression to variables.Â
I then tried:
Code:
If IsNull(Me.cboManufacturer.Column(0)) Then
MsgBox ("Please select category")
Else
DoCmd.OpenReport "rptItemCategory", acViewPreview
End If
This works if the combo box IS NULL but if i've made a selection, it still gives me the message box as if I've selected nothing....
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Aug 17, 2006
Hi,
I am wondering whether it is possible to trigger the run of a macro when a form window is closed using the close button in the top right of a standard window?
If not, then is it possible to display a form in a window without the minimize, restore and close buttons?
I am currently using a setup whereby I have a button to close a form, and when clicked a macro is executed. However, the user could just as easily close the form using the close button of the window and the updates would not be performed.
Thanks in advance
Turbojohn
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Dec 30, 2014
I have a form which has been in use for some time now, and works extremely well for all users; as part of a recent update to that form, I added a few events to various controls; most of them are message box prompts to remind the user to do something, but one is automatic entry of text into a memo field when another field is updated, and it is really this last one that is causing an issue.
There is a command button on the form which has an embedded macro, created using the wizard - it is probably the last, or one of the last few buttons that have a macro as opposed to VBA.
Essentially, when this button is clicked, I would like a duplicate of the current record to be made (thus giving it an Autonumber ID of its own), and if possible I would like this to be done without triggering any of the after update events on the form. Is there a way to disable these events and copy a record in its entirety, re-enabling the events at the end?
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May 23, 2014
I have the below VBA in a from for it to filter the records below based on the criteria:
Private Sub Search_Click()
Dim strWhere As String
strWhere = IIf(Len(Me.AssignedTo & "") <> 0, "([AssignedTo] Like ""*" & Me.AssignedTo & "*"") AND", "") & _
IIf(Len(Me.OpenedBy & "") <> 0, "([OpenedBy] Like ""*" & Me.OpenedBy & "*"") AND", "") & _
IIf(Len(Me.Status & "") <> 0, "([Status] Like ""*" & Me.Status & "*"") AND", "") & _
[Code] ....
When I click the search button nothing happens, is there something wrong with my code??
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Nov 25, 2014
I will have a PC and a number of scanners in a production line. I will need at least 15-20 scanners and would like to plan for more if needed. When an operator clicks on a button I would like to have each of the scanners triggered and return the value. They can be done in turn or all at once (preferred for speed). I need to know which value came from each scanner. I would then compare the barcode read at each station versus what is supposed to be at that station and either pass or fail.
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Sep 12, 2013
I have a main form with multiple combo boxes that filter a subform datasheet. In my main form combo box [PR_Filter] I added a selection titled "<Blanks>". When I select "<Blanks>", I want it to filter my subform field [PR] for NULL values. If I select anything else I want it to filter on that selection. I cannot get the NULL filter to work.
Here is the code that I have (Red is the field I need the NULL values):
Private Function PurchaseFilter()
Dim strFilter As String
Dim bFilter As Boolean
bFilter = False
strFilter = ""
[Code] ....
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Mar 25, 2015
I want to pass the Combobox value of one form to a textbox on another using the where condition. Using the break in VBA, the value of the combobox (in this instance "two") shows as null. the control of the combobox is [cboSubCategory] and I want it's value to pass to another form "tblCategoriesSub" (aware of the incorrect reference, as used wizard quickly - but will change if I can get it to work) to the "SubCategory" field.
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Aug 5, 2013
On a form, I want to disable the save button, 'cmdSave' whilst the form's mandatory fields have been left blank.
I've put in a smart tag, called, 'Req' against each required field and have used the following code on the forms current event.
Code:
Private Sub Form_Current()
Dim ctl As Control
For Each ctl In Me.Controls
If ctl.ControlType = acTextBox Or ctl.ControlType = acComboBox Or ctl.ControlType = acListBox Then
[Code] ....
The save button is disabled, but it won't enable again after each field has data entered against it.
I also have this code in the AfterUpdate event in each required field:
Code:
Private Sub cboErrorID_AfterUpdate()
Call Form_Current
End Sub
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