Modules & VBA :: How To See Value From Form As Global Variable
Apr 16, 2015
I want to use several values entered in form controls as variables within multiple subs triggered by further form edits. I do not want to define the variables in each sub as this will bloat my code, but I am not being successful in declaring my variables outside of an individual sub, and it is the 'Form!' reference that is throwing it I think.
Here are my variables:
Code:
Dim limit0txt, limit1txt, limit2txt, limit3txt As Integer
limit0txt = Forms!F_Samples_CF_FF_FLot!SF_EnviroCountLimitscntrl.Form!Limit0
limit1txt = Forms!F_Samples_CF_FF_FLot!SF_EnviroCountLimitscntrl.Form!Limit1
limit2txt = Forms!F_Samples_CF_FF_FLot!SF_EnviroCountLimitscntrl.Form!Limit2
limit3txt = Forms!F_Samples_CF_FF_FLot!SF_EnviroCountLimitscntrl.Form!Limit3
If I put these at the top of a module I get an "invalid outside procedure" error message. If I put these in their own module as 'Public' I get the same error. how within a forms code module I can make these variables available to as many events as I like?
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Apr 8, 2014
I have an application where several different procedures are run repeatedly every xx seconds to get live updates from a server (different procedures depending which form the user currently has open.) Within each procedure, a separate single procedure is called only if a stored boolean setting is set as true. The setting itself is only changed very infrequently, such as on application startup, but needs to be initially set (i.e. it cannot just have a default of False if it is not set.)Because of this I am storing the setting in a single record table and have a function 'UsingWPilot' to return the boolean value. However, given the frequency that the setting needs to be accessed, and the fact that speed is crucial in the running of the app, I am considering adding a global string variable and modifying the function to look at the variable (possible values 'N' and 'Y') and only going to the table if the variable has not been set.
I have heard various things about how you should never if possible use global variables. My question is: is it faster to use a global variable than to open the table record each time?
option 1 :
Code:
Public Function UsingWPilot() As Boolean
Dim db As DAO.Database
Dim rs As DAO.Recordset
Set db = CurrentDb
Set rs = db.OpenRecordset("rbl_Settings_System")
Option 2:
Code:
Public Function UsingWPilot() As Boolean
Dim db As DAO.Database
Dim rs As DAO.Recordset
If Len(g_WPilot) > 0 Then
UsingWPilot = (g_WPilot = "Y")
Else
Set db = CurrentDb
Set rs = db.OpenRecordset("tbl_Settings_System")
[code]....
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Sep 23, 2005
I have 3 different forms, each belonging to 3 different tables. The user is required to enter data on form 1 then form 2 & then form 3. The records on all the 3 forms has to be attached to the same primary key.
The problem is that the user has to enter the same primary key for each form.
I want to be able to carry the primary key entered on form 1 to form 2 and form 3, so that the user does not have to type it 3 times. How can i accomplish this ? Can i call the last primary key entered on table 1 and automatically pop it up on form 2 & 3 every time form 2 & 3 load?
Thanks
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May 18, 2005
I am trying to use a global variable in a dlookup but get an error when i try and run the form
Here is the code:
VUserID is my Global Variable.
Private Sub Form_Open(Cancel As Integer)
Dim UsersName As String
Me.WelcomeBox = UsersName
UsersName = DLookup("[Name]", "tbl Password", "[username] = vUserID")
End Sub
Any Ideas
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Oct 2, 2006
Got a problem trying to reference a global variable in the control source of a text box.
If i do a DLookup when the form opens and have the text box value = the result it works fine ie
Private Sub Form_Open(Cancel As Integer)
Text2.Value = DLookup("UserName", "Users", "[UserID]= " & MyUserID)
End Sub
Where MyUserID is the global variable.
if i put
= DLookup("UserName", "Users", "[UserID]= " & MyUserID)
in the control source of Text2 i get #Name? as a result and if i input
= DLookup("UserName", "Users", "[UserID]= 1")
i get the correct result.
As a test i tried to have the control source = my global variable, of another text box control source with the same result.
It looks like i can only reference my global variable within the VB and not in the forms control sources. Is this correct or can you referece the Global variable in the control source.
Shot
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Dec 15, 2004
i am having trouble with my where clause.. ca someone take a peek please..
Note: gID is defined globally as integer and tblCheckReq.ID is defined as an auto-number (in table). Thanks in advance!
SELECT tblCheckReq.UserName, tblUsers.UserDept, tblCheckReq.PaymentMethod, tblCheckReq.PaymentDueDate, TRIM(tblCheckReq.Company & " " & tblCheckReq.TaxType & " " & tblCheckReq.PaymentType) AS DISTDETAIL, tblCheckReq.TaxYear, tblStateTaxDepts.To, tblStateTaxDepts.Street, Trim(tblStateTaxDepts.City & ", " & tblStateTaxDepts.State & " " & tblStateTaxDepts.Zip) AS FULLADDR, tblCheckReqAmtsToAccts.GLAccountNo, tblCheckReqAmtsToAccts.Amount, tblCheckReq.ID, tblCheckReq.Approvedby, tblUsers.SalaryCode, tblCheckReq.Date, tblStateTaxDepts.Dept, tblStateTaxDepts.To, tblCheckReq.TaxYear, tblUsers_1.SalaryCode, tblCheckReq.Company, tblCheckReq.TaxType, tblCheckReq.PaymentType
FROM (((tblCheckReq INNER JOIN tblCheckReqAmtsToAccts ON tblCheckReq.ID=tblCheckReqAmtsToAccts.ID) INNER JOIN tblUsers ON tblCheckReq.UserName=tblUsers.UserName) INNER JOIN tblStateTaxDepts ON (tblCheckReq.TaxType=tblStateTaxDepts.TaxType) AND (tblCheckReq.State=tblStateTaxDepts.StateAbrv)) INNER JOIN tblUsers AS tblUsers_1 ON tblCheckReq.Approvedby=tblUsers_1.UserName
WHERE (((tblCheckReq.ID)='" & gID & "'));
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Aug 9, 2005
Hello,
I have the following query that I set up as a test, and it runs fine:
SELECT STATUSHISTORIE.*
FROM STATUSHISTORIE LEFT JOIN PROBLEM_DE ON STATUSHISTORIE.PROBLEM_ID = PROBLEM_DE.PROBLEMNR
WHERE (((STATUSHISTORIE.STATUSDATUM)<#1/1/2005#) AND ((PROBLEM_DE.DATENBEREICH)='SPMO') AND (((Left(([PROBLEM_DE].[MODULZUORDNUNG]),InStr([PROBLEM_DE].[MODULZUORDNUNG],"-")-2)))='K29') AND ((PROBLEM_DE.ERLSTAND)<>"WEIF"))
ORDER BY STATUSHISTORIE.PROBLEM_ID,
STATUSHISTORIE.STATUSDATUM;
I then set up two global variables ( a String and a Date) and respective functions to return them – ReturnE( ) and ReturnKW( ). Now my query looks like this, but takes ages to run:
SELECT STATUSHISTORIE.*
FROM STATUSHISTORIE LEFT JOIN PROBLEM_DE ON [STATUSHISTORIE].[PROBLEM_ID]=[ PROBLEM_DE].[PROBLEMNR]
WHERE (((STATUSHISTORIE.STATUSDATUM)<ReturnKW( ) ) AND ((PROBLEM_DE.DATENBEREICH)='SPMO') AND (((Left(([PROBLEM_DE].[MODULZUORDNUNG]),InStr([PROBLEM_DE].[MODULZUORDNUNG],"-")-2)))=ReturnE( ) ) AND ((PROBLEM_DE.ERLSTAND)<>"WEIF"))
ORDER BY [STATUSHISTORIE].[PROBLEM_ID], [STATUSHISTORIE].[STATUSDATUM];
My two public functions that return the global variables look like this:
Public gstrE As String 'global variable: contains E used for query
Public gdatKW As Date
Public Function ReturnE ()
ReturnE = gstrE
End Function
Public Function ReturnKW ()
ReturnKW = gdatKW
End Function
The tables are actually Views set up from an ODBC Data source. Can anyone please tell me why these global variables are causing the traffic jam? :)
Thanks in advance
J
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Mar 15, 2006
Hi All,
Can anybody tell me whether it is possible to use a global variable defined in a vb module as part of the criterea in a query, if not whether there is a work around.
I suppose I could temporarily write the data to a table and use it from there, I thought there would be less messing around this way though.
Cheers
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Feb 3, 2005
i noticed that if access is open for a long time
the globals return null
can i set the time of a global variable?
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Feb 6, 2008
I have a variable declared in a module as such
Code:Dim tracking_customer As Double
When i use one form to set the variable like
Code:Private Sub Command83_Click()'Set the global variable to this customer number'So it can be called in "ON OPEN" event in URL formtracking_customer = Me![Customer Number]'gets expected number in following lineMsgBox ("Trackign is " & tracking_customer) DoCmd.OpenForm "Url Tracking", acNormalEnd Sub
Now when I open that next form I try grabbing the newly set module variable but I always get the number 0. So I am assuming it loses the number once I change forms for some reason
Code:Dim trackID As DoublePrivate Sub Form_Open(Cancel As Integer)trackID = tracking_customer'Following line always produces 0MsgBox ("hey this is tracking customer number " & trackID)End Sub
Can someone explain this, and let me know what I am doing wrong please.
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Oct 21, 2013
I have this declaration in a module called Global Code
Option Compare Database
Public currentCustomerId As Long
Option Explicit
There is one report that simply prints a the firstname of current customer and the amount of each of his invoices.
The current displayed customer's ID is always copied into the variable currentCustomerId.
Below is the SELECT code of the data source of the report.
But whenever I open this report it asks for currentCustomerId.
Is my decalartion not global enough?
SELECT tblCustomers.FirstName, tblInvoice.Amount, FROM tblCustomers INNER JOIN tblInvoices ON tblCustomers.CustomerID=tblInvoices.CustomerID WHERE tblInvoices.CustomerID=currentCustomerId;
Note: I chose to save the current customer's ID in a global variable because, for some reason, when I select the report the Customer form loses the current customer record and goes to the end of the table as if creating a new customer record. This would not be an issue as long as I can retrieve the value in a variable.
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Nov 13, 2013
I have a form with up to 100 buttons generated based on a number of conditions. I am trying to pass the caption of a button to a sub so that I can open the correct forms. When a button is clicked how can I read it's caption. Me.caption is reading the form caption.
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Apr 22, 2015
Is there any way of opening recordsets as public or global in a form? E.g. if i do something like
Set rs = db.OpenRecordset("TblCustomers", dbOpenSnapshot, dbReadOnly)
the variable rs should be available in all the private sub i have on that form, and i should be able to access records without opening database/ record sets for individual subs.
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Sep 4, 2013
I would like to declare Global or Public variables from a table so they can be added to or edited easily. I had the following function to do this with Alpha Five but at the moment my lack of knowledge of Access VBA is making this task difficult.
Here is the function that I use in Alpha:
FUNCTION udVars AS A (udTabName AS C )
dim codeStr as c
t=table.open_session(udTabName,file_ro_shared)
t.fetch_first()
while .not. t.fetch_eof()
[Code] ....
It opens a table reads in the records and then makes them into a string the string would look something like this:
"Public EuroRate as Single = 0.885"
I would then need to use this string to declare the variables but not sure what command to use - I was looking at the Eval function last night but couldn't get this to work...
The table would hold strings for all the above so you would have:
My_Var (variable name)
My_Typ (type of variable e.g. Single)
My_Val (value e.g. 0.885)
The table would hold as many variables as required, some would be dates, some paths for making directories and some would be numbers.
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Jul 8, 2013
Error 91 - Object variable or With block variable not set
I am getting this error telling me that an object variable is not set.
I know which variable it is but when I step through the debugger it sets the variable and all is fine? Issue is that public variable of a class is not getting set when the VBA Editor is not open?
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Oct 3, 2014
This code runs fine the FIRST time, however trows up a message the SECOND time it is run.
The error is on the line ".Range"
I am trying to sort records which have been exported to Excel.
Dim LR As Integer
LR = 5
Set xlApp = CreateObject("Excel.Application")
xlApp.Visible = True
Set wbRef = xlApp.Workbooks.Add
With wbRef
wbRef.Activate
.Worksheets("Sheet1").Activate
With ActiveSheet
.Range("A2", .Cells(LR, "O").End(xlUp)).Sort Key1:=.Range("C2"), Order1:=xlAscending, Header:=xlYes
End With
end With
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Dec 29, 2013
I have a form which load data from variables in record set where i can make insert update and delete i need to load sub form when the form load the problem is that all text boxes in main box load from variable which are in rerecord set and how can navigate using navigation buttons in main form.
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Jan 23, 2014
I am new to access programming.Is it possible to store a variable in one form and then retrieve it to auto fill a field on another form .
I know hot to Dim and store on the same form but trying to retrieve from another form i cant do .
I presume the second form would be something like this OnLoad Variable=forms"customers"customersFK...
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Jul 24, 2014
How to declarate variable to working with in a form, subform and subform2
Form-->subform--->subform2
I tried to
Public ...
Private...
Dim....
And always variable working only in Form. I don't want to declarate variable in a separate Module.
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Aug 20, 2014
I look at a lot of files to see when they were last updated. I wanted to write a generic procedure to manage that so ..
Code:
Public fDate As Variant
Public vField As String
Public vFile As String
'GTSdata
vField = "txt_gts_data"
[Code] ....
What I hoped Me.vField would do is update the date field [txt_gts_data] on my form with the date the file was last saved.
i.e. me. txt_gts_data = fDate
What actually happens is the variable vfield gets updated from "txt_gts_data" to 19/08/2014 then later code falls over because the fieldname is lost .
Me.[vField] corrects itself to me.vField (and does not work)
Me!vfield falls over (cannot find the field vField, not surprising J)
How do I say update the contents of the variable, not the variable itself?
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Feb 19, 2014
I have a button on my main db, that opens a second db using hte following code:
----------------------
'Dealing with external objects, use inline error trapping
On Error Resume Next
Dim appAccess As Object
Dim db As Database
Dim strAppPathName As String
Dim strAppName As String
Dim strTimesheetPathName As String
[Code] ....
This code works great to open the other db, and handles wheter the other db is already open or not, but I cant seem to pass the variable to the other db using the startup switch /cmd.
I suspect if I used the shell method it would pass the cmd , but I havnt found any way to test if the db is already open with the shell method.
How can I pass a variable to the other db when opening it using VBA?
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Apr 30, 2014
I have some code in a form that calls for a public function and passes on some values. the function makes some calculations and assigns a value to the variable "percent" in the function itself.
How can I get the value of this variable back in the form so I can use it?
Form:
Code:
Private Sub Form_Open(Cancel As Integer)
Dim Table As String, TotalFields As Single
Table = "tblAdmission"
[Code]....
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Jan 1, 2014
An instance of a form can be opened with:
Dim frm As Form
Set frm = New Form_formname
How can this be done using a variable as the formname?
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Jul 2, 2013
I manage an Access application that in many instances uses data selected from a combo on a form for variable criteria. In this instance it is in the form of:
[Forms]![Main Navigation]![Print Menu]![SchoolYear]
I recently wrote a routing that exports to Excel based on a record set derived from a query. In testing I hard-coded the criteria (School Year) in the query. Once everything worked I sustituted the variable above. Now, in the VBA, no records are put into the recordset, when I run the queries directly from Access they work correctly, drawing the results for the school year selected on the form referenced.
'Create The Recordset
If Me.Frame11 = 1 Then
strQueryName = "ExcelHS"
GroupTitle = "High School"
Else
strQueryName = "ExcelMS"
GroupTitle = "Middle School"
End If
Set objRst = Application.CurrentDb.OpenRecordset(strQueryName)
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Nov 19, 2014
I wanna create a button in form which can allow me to import my data base file with some tables , i would select just the variable that i need in the table not all of them .
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Nov 16, 2014
I some code that is reading the first 32 lines of a text file and paste the results into 1 text box on individual lines. I would like each line to go into an individual text box.
I have 32 text boxes named txt_1, txt_2, txt_3
I have a variable named ThisLine holding the line of the text file.
I have a variable named textBoxName holding the name of the control.
Need to putting these together to write the line to a text box .
Code:
Sub ReadFile()
Me.txt_newData = ""
Me.txt_OrigData = ""
'again, we need this strange thing to exist so that ...
Dim fso As New FileSystemObject
[Code] .....
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