Modules & VBA :: Using Public Function To Feed A Variable String To Query
Feb 26, 2014
I am using a public function to feed a variable string to a query. So far I have got:
Code:
Public Function ClientStreetModule(firstLVar As Variant, streetVar As Variant, newFL As Variant) As String
Dim cslStr1 As String, newStreet As String
newStreet = Right(streetVar, Len(streetVar) - Len(newFL))
[code]....
However, I only need to use newStreet as the true part of iif, in which instance all are longer. At least I think this is the problem. I realise I might need to use NZ but am not sure how. Why it is evaluating and giving errors for all records and not just when the iif criteria is true as I want it to?
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Sep 23, 2014
Question for Documentation purpose: Should the Public Type be declared in its own module?
Or should it be declared in a standard module where non-public functions use it? It is not for a Form module use.
For a Rule Engine, a function is calling one record on 4 different SQL Views (as linked tables) that have the same field format.
For speed, the recordset should only be opened once. However, there are multiple values that must be returned to the result table multiple fields.
One way to return multiple values is an Array. That has over head too.
Another way is to create multiple public variables. Not my choice for documentation. Another is to create a string.
This is a pure code module with several non public functions / subs. What is the documentation preference? List a Public Type close to the function, or place it in the Global module?
Background: A function can only have one return value.
By creating a public Type, multiple values can be returned.
Code:
Public Type Income
Wages As Currency
Dividends As Currency
Other As Currency
Total As Currency
End Type
Use this structure as the return type for a function. In a real situation, the function would look up your database tables to get the values, but the return values would be assigned like this:
Code:
Function GetIncome() As Income
GetIncome.Wages = 950
GetIncome.Dividends = 570
GetIncome.Other = 52
GetIncome.Total = GetIncome.Wages + GetIncome.Dividends + GetIncome.Other
End Function
To use the function, you could type into the Immediate Window:
GetIncome().Wages
(Note: the use of "Public" in the Type declaration gives it sufficient scope.)
Important Notice The way this function is called will work, but is wrong from the aspect it re-calls the recordset over and over.
See the proper way to use it submitted below.
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Oct 10, 2013
I have a query
Code:
Select distinct [tbl_DTP/CTP].id_zlecenia, [tbl_DTP/CTP].Folia_na_lakier_UV, [tbl_DTP/CTP].Wykrojnik, [tbl_DTP/CTP].Makieta, [tbl_DTP/CTP].Matryca_do_tloczenia, [tbl_DTP/CTP].Matryca_do_zlocenia, [tbl_DTP/CTP].kalka, tblGoraZleceniaRoboczeLaczenie.NumerZlecenia from [tbl_DTP/CTP] inner join tblGoraZleceniaRoboczeLaczenie on [tbl_DTP/CTP].id_zlecenia = tblGoraZleceniaRoboczeLaczenie.NumerZlecenia where tblGoraZleceniaRoboczeLaczenie.NumerZlecenia = r1;
Where "r1" is a public variable as string.The variable has value e.g. "10/145" But query can't get this value and all the time ask about value from "r1" :/
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Aug 26, 2014
I am amending some Code I found online for an audit table, I need to store additional information in the table that is associated with some forms but not others.
I have researched about putting optional variables in, but I read this only works with the type VARIANT.
Is there a way to make a string optional as my fields contain text?
here is my code so far:
Sub AuditChanges(IDField As String, UserAction As String, Optional UserID As String, Optional DeviceID As String, Optional SimID As String)
On Error GoTo AuditChanges_Err
Dim cnn As ADODB.Connection
Dim rst As ADODB.Recordset
Dim ctl As Control
Dim datTimeCheck As Date
[Code]...
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May 1, 2015
I have to count the number of occurrences of Line feed (vbLf) in a long string. The code I am using is:
MAX = TLine.Split(vbLf).Length - 1
It does not work.
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Apr 14, 2015
Is it possible to open another database, set a Public boolean variable in a module?
in db1: Open database by Access.Application, OpenCurrentDatabase, setting obj to db2.CurrentProject, loop through main objects
in db2: Public ByPassCloseVar As Boolean is in a module ModLinkTblReview
I have a process that opens up a database runs through all of its objects to get their properties and values. There is a form that is set up on Unload to close the tool if the variable is set to False. When I open the form to get the properties and their values, then close the form, it closes the database. I would like to set the variable to true in order for the database to stay open.
Thought something like this would work: db2.Modules!ModLinkTblReview.ByPassCloseVar = True
Indicates that method or data member does not exist.
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Mar 27, 2015
I have a module that has a global variable defined as shown below
Module: initGlobals
-----------------------
Code:
Option Compare Database
Option Explicit
Public strGlobalUserId As String
Sub initvar()
strGlobalUserId = "Myuserid"
End Sub
This is invoked in a login form("frmLogin") and it displays the above value before I replace it with the one that is accepted in the form.
Here is the code from the login form
Code:
strGlobalUserId = Me.cboEmployee.Value
When the password is successful, I close the login form and open a form called "frmMainForm". In the form_open event of the "frmMainForm", I am trying to display the user id using strGlobalUserId but it just has spaces. What am I doing wrong?
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Oct 9, 2014
I have a backup subroutine which automatically triggers when the front-end is closed down (it just takes the back-end, makes a copy and compacts it).It's driven off a hidden form which I use to track who is connected to the BE at any given time. This form is opened as part of the AutoExec when the FE is opened and writes some basic user info to a table. When the form is closed, it updates the table and fires the backup process before quitting Access.
Part of that user tracking process checks to see if the same user is already connected - either elsewhere (i.e. on a different machine) or on the same machine (i.e. opening a second instance of the same FE) - which is undesirable (and, frankly, unlikely, but not impossible) A brief prompt appears to explain that they can only be connected once, at which point the application is quit (to enforce the rule) This also works fine.
I would add a public boolean variable, set it to True by default, then switch it to False if the same user is already logged on before quitting Access.Trouble is, the variable doesn't seem to be holding its value? Here is the Load event for the tracking form :
Code:
Private Sub Form_Load()
On Error GoTo ErrorHandler
Dim dbs As Database
Dim rst As Recordset
Dim strSQL As String
Call InterfaceInitialise
blnPerformBackup = True
[code]...
For some reason, blnPerformBackup is False every time, even though I set it to True at the very start of the Load event (and it is a Public variable, defined in a separate module where I store all my Public constants and variables)
why it is not retaining its value from the Load event? I've checked and it does get set to True - and when I debug, it remains True - but at runtime it reverts back to False by the time it reaches the decision whether to backup or not?
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Sep 26, 2014
I've got a private sub that runs when the form loads. I want it to get the id of the record which has opened this new form.
The public sub populates the variable but it's Empty going back into my private sub. I'm sure its a simple school boy error but it has me stumped!
I want it public as I need to keep that id as new records are added in the form.
Private Sub Form_Load()
FRStudentFundingRequestID
'fundingrequest = FundinRequestID
Me.txtFKFReq = FundingRequest
End Sub
__________________________________
Public Sub FRStudentFundingRequestID()
FundingRequest = [Forms]![frmFundingRequest]![txtpk]
End Sub
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Nov 7, 2013
I want to define a public variable and i am using the following code but it gives me Compile error Invalid outside procedure.
Code:
option explicit
public ABC1 AS VARIABLE
ABC1="FALSE"
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Jul 22, 2013
I am currently trying to create an update query (building a SQL String in VBA for a command button click event) to update a variable's value into a table.
Basically, there are 2 tables, displayed in 2 sub froms within the same main form. (OldTable and NewTable for arguments sake)
The basic method I want to implement is that a user highlights a record in the subform of "NewTable". (This value is stored as a variable "NewJPNUM" This value is then to be inserted into the highlighted row (or rows) of table OldTable on command button click.
So the basic idea is a user highlights a row in one table and this value is stored as a variable "NewJPNUM" . The user then highlights a row or rows in "OldTable" and the value from variable "NewJPNUM" is then written to field "NewJPNUM" in "NewTable" on command button click.
I am not experienced with Access but have decent experience in Excel / VBA so not really sure of best practice methods etc.
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Oct 4, 2013
I am trying to read the value of a control on an open form from a Public Function in a Module with no luck. I suspect the issue is syntax.
Code:
Public Function MyFunction(varFormName As String, varControlName As String)
If Forms(varFormName).Controls(varControlName) = True Then ' = 0 even when control is -1
Else
End If
End Function
The variables pass through fine but the If statement equals zero regardless of the state of the form's control. I tried several variations to no avail.
If Forms(varFormName).Form.Controls(varContactControl ) = True Then
If Forms(varFormName)!Form.Controls(varContactControl ) = True Then
Etc.
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Jun 4, 2014
I have an issue with this case select below. The DelayStart is time so lets say I put in the debug window
?DatePart("h", #04:00pm#)
The result would be 16 which is correct BUT the issue is my second shift starts at 04:01pm and the result is still 16 untill 5pm. How do I fix this so I get the correct shifts? Im guesing use something other than DatePart but what?
'Daylight 6:00am - 4:00pm
'Afternoon 4:00pm - 2:00am
'Midnight 2:00am - 6:00am
Code:
Public Function getShiftForRecord(DelayStart As Variant)
On Error Resume Next
Select Case DatePart("h", DelayStart)
Case 6 To 16 'Daylight 6:00am - 4:00pm
[Code] ....
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Jan 23, 2014
I have built an access application that contains a set of buttons along the top of every form that serve as navigation.* These buttons each perform the same function on every form they are on. (menu opens the main menu, etc) I have database macros to assign each button the same function but I still have to go through each form and manually assign them. I was wondering if it was possible to define a public function that on db open will look for all buttons with a certain name and assign them the macro. (so all buttons called cmdmainmenu will have the OpenMainMenu macro assigned and so on).Before you go there, I have already tried the navigation form and set all forms as subforms.
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Oct 22, 2013
I am designing a Public Function F()
I want this function to populate value from a any field selected from any table to any text box in any form ...... Lets say in a Database named TestDB we have a Table named tblTest , a Form named frmTest and in this form( frmTest ) we have one Bound Combo Box named cmbTest and one unbound TextBox named txtTest
We assume that the table tblTest has three fields : TestID , FName and LName .
We also assume that there are already some records in the Table tblTest .
If the function F() is already programmed it should take as arguments as it follows :
F(FormName as??? ,ControlName as ???, TableName as ???, FieldName as ???, ID_Field_Name_of_the_Table as ???, Combo_box_selected_ID as ???)
In result the function should (probably) DLookup (FieldName , TableName , ID_Field_Name_of_the_Table = Combo_box_selected_ID ) and then store the value in a variable ( probably Variant ???) , lets say called varSetValue.
The problem is IF this is the correct way to handle that issue , than what should i do next.... I really don't know how to pass a Control's name to a function from the Event module of the ComboBox -
I mean - how can I obtain the value so it is usable for the function .... What data type should be the function arguments so I can use them to set a value for a control in any form .
In example : If the Dlookup() is somehow successfull then I want to assign the varSetValue to the txtTest what should I do : FormName.ControlName.Value = varSetValue >??????
I have read a lot materials but couldn't find a good answer for that , and aswell what data type should be the arguments that the function accepts and how do I obtain Controls and Forms names so I could use them in the function as described above .
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Dec 23, 2013
I have the following function that I found online. Unfortunately I can't remember where I got it since I've had it for a little while. Today, when I tried to actually put it to use it didn't work.
I'm calling it from a form as follows: CompactDB (tblHotword)
tblHotword is just a random table from the back end. My understanding of the function was that it would use that table to connect and get the file name of the back end.
Whenever I run it, Access pops up a window that says "Object required" and nothing else. It doesn't look like a standard error message popup. When I click 'OK', Access continues with the rest of the code as if nothing went wrong. The function doesn't run though.
Code:
Public Function CompactDB(TableName As String) As Boolean
On Error GoTo Err_CompactDB
Dim stFileName
DoCmd.Hourglass True
stFileName = db.TableDefs(TableName).Connect
[code]....
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Jun 11, 2013
I have multiple reports that use similar IIF statements as the controlsource for four textboxes. Naturally, I don't want to have to update twelve controlsources if any of the calculations change, so I thought I'd make this a public function. However, I don't know how to pass along multiple textboxes as variables. Here's what I have so far:
Code:
Option Compare Database
Public Function txtColor(ByRef textbox As Control)
Dim str1, str2, str3, str4 As String
'The IIf statement is simplified for this example. It's not important.
str1 = "=IIf(IsNull([Inquiry start date]),'W',IIf([txtInquiry]<1 And IsNull([Inquiry end date]),'R'))"
[Code] ....
And this is in the report (where ??? is what I'm asking about)
Code:
Private Sub Report_Load()
Call txtColor(???)
End Sub
The error I get is "Runtime 424 Object Required"
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May 31, 2014
I have a table with only two fields and one record: BegDate and EndDate (beginning and end date of the reporting period respectively). I also made a function with variables that look up those values for use as a date parameter in a query.
Here is the code:
Option Compare Database
Option Explicit
Public Function getCurrentRepDates() As Date
Dim dtBegDate As Date
dtBegDate = DLookup("BegDate", "tblCurrentRepDates")
[Code] ....
I am getting a syntax error for the line marked red. How can I use "Between" function in VBA code? Access 2010
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Jan 14, 2008
Hi all,
I'm trying to get a public function to work within the design view of a query. The function is defined as:
Public Function Percentile_(fldName As String, _
tblName As String, p As Double, _
Optional strWHERE As String = "") _
As Double... ( I can put the whole code if u need it)
Any thoughts about how I can make the Percentile function calculate values according to a GroupBy statement and not for whole data set?
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Oct 29, 2007
Hi All
I have used Allen Browne's code (see http://allenbrowne.com/ser-16.html, bottom of page) as a model for my user-defined type and public function in an events management database.
Using the function in forms/VBA works fine.
But my DB crashes whenever I try to use it in a query.
My modules code:
= = =
Option Compare Database
Public Type EvCheks
EvType As String
EvAttCat As String
EvUnitAss As String
EvCheksAll As String
End Type
= =
Public Function getEvCheks(EV, EvUnit) as EvCheks
'Event Type: Event or DL
If (DLookup("evtype", "tblevents", "[evid] = " & EV)) = "Event" Then
getEvCheks.EvType = "Y"
Else: getEvCheks.EvType = "N"
End If
'Event Attendance Category: INDB= in database or LIST
If (DLookup("evattcat", "tblevents", "[evid] = " & EV)) = "INDB" Then
getEvCheks.EvAttCat = "Y"
Else: getEvCheks.EvAttCat = "N"
End If
'Event Assessing Organisation
Dim AOROName As String
Dim AOName As String
AOROName = DLookup("evunitassessable", "tblevunits", "[evunitid] = " & EvUnit)
AOName = Mid([AOROName], 1, InStr([AOROName], "/") - 1)
Select Case AOName
Case "NA"
getEvCheks.EvUnitAss = "N"
Case "ABCD"
getEvCheks.EvUnitAss = "Y"
Case Else
getEvCheks.EvUnitAss = "X"
End Select
getEvCheks.EvCheksAll = getEvCheks.EvType & getEvCheks.EvAttCat & getEvCheks.EvUnitAss
End Function
====
On a form, I have a button with on-click event code that defines the EV and EVU variables and displays a message box
MsgBox getEvCheks(EV, EVU).EvCheksAll
This works fine.
=====
In a query I have this SQL code:
SELECT tblEvUnits.EvId, tblEvUnits.EvUnitID, getevcheks([evid],[evunitid]) AS EventDetails
FROM tblEvUnits;
This causes the db to crash.
I cannot get the "back-end" definition of the function into the query, as Access rejects it because of the dot, i.e. ".EvCheksAll".
I suspect there is some formatting quirk for using a public function that includes a user-defined type, in a query.
Any/all assistance much appreciated.
Regards
AlanM
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Sep 17, 2013
I created a Public Function called fNetWorkDays in my access database, however, when I try to use it in an expression I get "Undefined function 'fNetWorkDays' in expression". The Public Function is in a standard Module in my vba project. Why I cannot call it in my queries?
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Sep 10, 2013
I am trying to set the following variable that will be used to create a PDF file in an already existing folder and name the file WorkorderIDddmmyyyy-hhnnss.pdf
The following variable setting creates the filenameddmmyyyy-hhnnssWorkorderID.pdf.
mFilename = "C:RPR AccessPDF Reports Emailed" & Format(Now(), "ddmmyyyy-hhnnss") & WorkorderID & ".pdf"
DoCmd.OutputTo acOutputReport, mReportName, acFormatPDF, mFilename, True
I just can't figure out how to construct it correctly.
Also, is there a way to dynamically create a folder if the folder doesn't already exist? I currently hard code the folder name but would really like to create the folder name based upon some other variable.
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Jun 19, 2015
How to I get a portion of a string into a variable?
I want to capture the table name of a recordsource.
The problem is sometimes the recordsource is "Select * from mytable where ID = 6" or "Select * from mytable" or "mytable"
I want to put "mytable" in a variable for later use.
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Sep 16, 2005
Why can't I set a controls default value to a public variable?
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Dec 7, 2014
I am trying to write vba code to enter a form. A am using an SQL statement in vba to enter the form with it.
I want to include a string variable in the WHERE clause of the SQL statement. The string variable is introduced in the DIM statement before coming up to the SQL statement.
The following is the SQL statement. numrukarta is the string variable I want to introduce. I need to know the exact punctuation to be able to insert it into this statement.
StrSq1 = " SELECT Employees.NName, Employees.SSurname, WorkItems.IDcardNo, WorkItems.DDate, WorkItems.EntryTime, WorkItems.FinishTime, WorkItems.Roster" _
& " FROM Employees INNER JOIN WorkItems ON Employees.IDcardNo = WorkItems.IDcardNo" _
& " WHERE (((WorkItems.IDcardNo)= numrukarta) AND ((WorkItems.DDate)=Date()) AND ((WorkItems.FinishTime) Is Null);" AND (Not (WorkItems.Roster) Is Null))
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Apr 3, 2013
I am working on a database where I want some specific information displayed on a form, preferably on the form header. I want to display this on all of my forms. In a standard module, I have a code segment that runs a query returning values, and I assign those values to my public variables. I run this code segment triggered by "on activate" of each form.
The variables contain an Event Date, and an Event Name. I want this information to appear on each form. How do I get this data onto my form as part of the form header, or if cannot put on header section, then in the detail section?
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