Modules & VBA :: Prevent Record Creation If Form Is Null?
May 11, 2015
Nutshell: My user DB has one menu with 4 tabs (2 for adding records, and 2 for searching/editing records). Since the form opens up in the acFormAdd mode, Access already creates a new record (blank) before they type anything. It is resulting in blank false new records that are getting added to the table and they are getting annoying. My audit table is full of "user X created new record at this time" when it's just a blank record.
There must be a way to prevent this using VBA, but I cannot find it.
I've seen ways to disable "add new record" buttons and such, but nothing that disables Access from being smarter than me and creating a new record before I decide to.
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Jun 15, 2014
If expression to determine if a duplicate records has been entered.
DateAte is a date
MealType is a list box (text)
All I want to do is prevent two lunches, etc. from being entered on the same date. Code that results in the message box every time, regardless if a duplicate record or not.
Private Sub MealType_AfterUpdate()
Dim strDA As String
Dim DA As Date
DA = Me.DateAte.Value
strDA = "[DateAte]=" & "#" & DA & "#"
If DCount("[MealType]", "tblmeals", strDA) > 1 Then
[code]....
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Jul 17, 2013
I have a table that is a list of all of my events. Each record of events should have a child table that list all of the things that happened at the event. When a new record (event) is added how can I have a new child table created and linked to that record. Also I have a blank table to serve as a template for what each child should look like. How do I make sure this occurs? The child tables can have the same name as the index. I am just using numbers 1- for the index with 1 being the first event and so on?
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Aug 26, 2014
I have a split form that's like a list of pending tasks. The data source is a linked SharePoint 2013 list where users submit requests. The user takes the information from each record and performs an action. When it is done, the user presses a button and the task status changes from "Pending" to "Processed". The form record source is based on a query that finds only records with a status of "Pending" so when the user changes the status of the task, it is removed from the list. It works fine except when there is only one task left in the work list. If the user processes the last task, the form refreshes and it goes to a new empty record and I get an error message that says I must enter a value into one of the required fields. I tried making the field non-required but it just creates an empty record in the table.
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Nov 24, 2014
I have some code which creates a record in an external csv file to provide information to upload a vehicle to the website. It works fine with the exception of creating duplicates when, for example an option to amend a record is given to the user before continuing to a new record. The option has to be in place in case there is an error in the specifics of what is important to be recorded in the database and under such circumstances the form code allows the user to tab through the form and correct any errors, but this creates duplicate entries in the csv file as the user has to pass through the 'SavePrintVehPurch_Exit' button a second time after corrections are made.
I am wondering if there is a way of altering the following code to effectively look look to see if the csv record exists and if so correct any changed field information rather than create a whole new record or create a new record where the record does not exist - The record in the csv file is determined by the 'Me.VP_VehRegMark.Value '.
Private Sub SavePrintVehPurch_Exit(Cancel As Integer)
Dim fileText As String
Dim fileName As String
Dim fileNumber As String
fileNumber = FreeFile
[Code] ....
I am wondering about introducing the something like the following ( but can't work out how to clarify comparison of the fields)
If Len(filename(fileText)) = ? Then
Do not change entry
Else
Overwrite the new detail
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Oct 18, 2013
I've got this form called mainmenu and inside this form I've got this code to prevent it from being closed.
Code:
Private Sub Form_Unload(Cancel As Integer)
Cancel = True
End Sub
Now then, when I try to switch to design view in this form it doesn't let me because of this code. Is there anyway to tweak this code so that I can get into design view without having to keep disabling it?
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Jul 11, 2013
On a push of a button from a form, I want to locate specific records within the table and update a field to Null if it matches a name
Dim strSQL As String
strSQL = "UPDATE tblmaster SET Score = "" WHERE [AdvocateName] = 'Anna Maria'"
DoCmd.RunSQL (strSQL)
I'm certain I don't have the syntax correct between the Set to Null and WHERE clauses..
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Oct 2, 2014
If a new record is created, insert date only if customerID is not null
Private Sub Form_Current()
If "CustomerID", "TblDietPlan" = <> 0 Then
If Me.NewRecord Then Me.MealDate = DMax("MealDate", "TblDietPlan")
End Sub
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Jun 26, 2006
i have a table..
staffdayid
date
timein
timeout
notes
i want to have a feature in my database like the following..
these are basically day to day clock in times for my staff..
is there a way that everday.. a new record will be created..
eg.. on 04/06/06... i turn on my pc for the first time.. and when i view the timesheet form.. a record for today is automatically created.. then throughout the rest of the day, this form will be displayed..
when i turn on my pc on 05/06/06, the database will know its a different day, so it creates a new record for today... then i can just move back and forth throughout the days to see the details..
if i then turn my computer off for 5 days, then turn it on at 10/06/06, it still should have made records for 6,7,8, and 9th June, but they will be empty, and the record im shown is for the 10/06/06,
how can i make this?
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Aug 9, 2007
I been tasked with a project to be written in access which I am rather unfamiliar with, web design is more my area.
For part of the project I need to copy some pricing fields from a pricing table to a new record at the point that the new record is created. The new record is created when a 'new form' button is clicked.
What I would like to know is what and where I should trigger the copy query from and what function should I be using?
cheers
John
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Sep 7, 2011
I have a subform with a lot of fields in which require input. I have set the tab order correctly so they go through in sequence. However, I have found when I tab out of the last field. Its creates a new record which I dont want.I want it to either return to the first field to just stop.
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Feb 18, 2014
I have two tables; Customers and contracts.
I would like access to automatically create a record in the contracts table when I change the status in one of the Customer Fields from prospective to Customer.
The two tables are linked using the Customer ID field.
Is this possible?
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Aug 5, 2005
I have a multi-select list box for selecting which faculty members apply to a project. The faculty table and project table are linked in a many-to-many relationship. I have the following code which should create entries in the link table:
Private Sub Command5_Click()
Dim varItm As Variant
rs.Open "tblFacultyLink", CurrentProject.Connection, adOpenDynamic, adLockOptimistic
For Each varItm In lstFaculty.ItemsSelected
rs.AddNew
rs!FacultyID = Me.lstFaculty
rs!EntryID = Me.EntryID
rs.Update
Next varItm
rs.Close
Set rs = Nothing
End Sub
It successfully creates new records and enters the EntryID and LinkID (autonumber). However, FacultyID is always left blank. lstFaculty is the unbound list box which has three columns from the faculty table and is bound to FacultyID. Any ideas on why FacultyID isn't created in the link table (I get no error messages)?
Also, any ideas on how to prevent duplicate links being created every time the button is pushed? I was planning on having it first run a delete query for that EntryID in the link table so that it replaces the old links and any that have now been unselected are no longer linked. Comments on that idea?
Thanks again to everyone on the forums for your help.
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May 29, 2013
What I would like to do it take all 'RoleTitle' from RolesList, all 'CourseID' from courselist and show them as a pivot table/matrix with a checkbox that creates or deletes entries from the RoleRequirements table. So, if it exists in the RoleRequirements table then it should appear a checked, unchecking it would delete it from the table.
I am using access 2010 with a SQL server 2005 backend.
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Feb 11, 2008
I think my question is fairly simple - fingers crossed.
I want to create a field that, whenever a record is added, it auto-adds the date & time the record was created. I'd call it Book_Date_Added, or something like that. I tried snooping around the Default Value options but couldn't figure it out.
The table exists and it already has some records, so I'd need to know how to add this field rather than how to create it when I create a table (although that would be helpful too, if it's somehow different).
I'd appreciate any help, thanks a bunch.
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Nov 16, 2014
I do not understand what is happening here. I have foll0wing line in a calculated query field:
m: Switch([EmpID]<5,1) ' run Query 18 in attached example, A2007/2010
this produces 1 for all EmpID<5 and Null for all other EmpID's. All as expected.
But if I do this:
m: Switch([EmpID]<5,1,[EmpID]>=5,Null) ' run Query 19 in attached example
then the entire column is set to Null
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Jul 5, 2013
It might be an easy one but I just wasted the past hour deciphering through my code in order to solve the run-time error '94' that I'm getting when trying to execute the following code:
Code:
Private Sub cmdUpdateDates_Click()
'###################################
'This sub aims at combining the timesheet date and the start and end time into the fields [Start Time] and [End Time].
'###################################
Dim intCounter As Integer
intCounter = 0
Dim rs As ADODB.Recordset
[Code] ....
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Mar 18, 2014
I'm trying to add a new functionality on my search form where the user can search for records that haven't been modified(based on the field DateModified) for certain amount of time.This is what I added in my search function but it's giving me "Invalid use of Null"
If Not IsNull(Me.txtInactiveTime) Then
Dim LValue As Integer
LValue = DateDiff("d", Me.DateModified, Date)
Select Case Me.txtInactiveTime
Case "> 1 month"
strWhere = strWhere & "(LValue >= " 30 ") AND "
Case "> 2 months"
strWhere = strWhere & "(LValue >= " 60 ") AND "
End Select
End If
txtInactiveTime is a combo box where the user chooses the time during which the records haven't been modified.(i.e. 1 month, 2 months etc.)
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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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Apr 25, 2006
I've got a form/subform showing employee/position details. I've disabled the regular record navigation buttons and put in ones of my own. If I'm advancing through all the position records for a particular employee using the next record button, when it gets to the last record, the next button advances to a new blank record. Because I'm prepopulating new record fields with previous record values, the users sometimes don't realize they've just created a new record. Is there a way to advance through records without advancing past the last record into a new blank record? I still need the ability to add new records on this form using the add record button I've created.
Any help is much appreciated!
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Apr 10, 2015
I have a form with couple of textboxes bound to a table. When the user opens the form to enter records, i want to write a function that would go through the textboxes to check whether the textboxes are left NULL. Now i can write code on button click for each form, but i was wondering if its possible to write a function that could be called for each form that i have to check for null values.
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May 30, 2006
hi there,
i also need help in my form creation. as you can tell from my post, i am clueless.
anyways, here is what i want to do.
i have an input text as:
title1
name1
address1
these will grow based on how many people information one needs to enter. so say if i have 3 people i should have:
title1
name1
address1
title2
name2
address2
title3
name3
address3
and so on
the thing is i only want to show input text 2, 3, etc when i have several names to enter.
so what i want is, a button, such that when i click on that button, it creates input text 2, 3, based on the number of people i have.
i know how to do this easily with html/javascript, but i MUST do this in ms access, so i hope somebody can help.
TIA
chocho
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Aug 4, 2015
The unbound Parent form has a listbox (SQL Server) , the selection updates the SubForm with a primary key ID. The Subform is a ReadOnly view from an Oracle Linked table. It populates with a Select * From Oracleview where ID = listboxID The code is at the link shown below update: The subform uses textboxes linked to the read-only record.
The main form can populate, no problem. However the SubForm data source is either populated OR is Null.
If it is Null, the subform stays blank. Two Objectives:
1. Set a boolean variable flag in the parent (main form) that subform record exist or that it is null. e.g. Parent obtain recordset count property from Sub form
2. Display the subform with blanks.
[URL]
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Mar 11, 2006
Hi All,
I have a recored set and i dont want a duplicate of the record set in the same table.
Say if my table name is businessskills and contains three fields(columns) and their names(Email , B_code, Rating) highlighted in red with data are as below
Email B_code Rating
hugh@hp.com b001 1
hugh@hp.com b002 3
hugh@hp.com b005 2
ston@hp.com b002 3
ston@hp.com b007 3
I have 5 recordsets in my table as shown above and i want to prevent any e duplicates.
Is this possible to implement to with excel vba code or directly in Access Database, either ways is fine with me.
Can any one please help me with this.
Thanks in advance
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Aug 8, 2007
do you guys use a query as your data source in you form?
if not how do you build a form with mutilple tables with the same unique id.
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Sep 30, 2015
My Database consists of three tables and a linking table, tbl graves, tbldeceased,tblmemorail and tbl memorialtablejoin.
Having completed my tables and checked that the relationship data gives the correct data I decided to embark on a simple form to display all the data on a single form.
So I used the create Form option, selected add existing fields. All of my tables are shown in the fields list.
From tblgraves I selected plot and grave Id, from tbl deceased forename and surname and from tbl memorial the inscription field.
The form was created but on examination I realised that my total records was shown as 12000 records whereas tble graves and tbl deceased has 39000 records and tblememorial 17000 records
So I created the form using just tblgraves and tbldeceased and that shows my 39201 records.
If I leave form view and go back to design view and add the inscription record from tblMemorials I see the message box as per the attachment.
Not every grave or deceased has a memorial but I would expect to see my 39000 records
I've also attached a screen shot of my relationships...
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