Modules & VBA :: Error (Invalid Use Of Null) In A Function Called From A Form Current Event
Nov 18, 2013
I am struggling trying to execute a function inside a Form_current event to display some stats.
The Function is this:
Code:
Function FlightsByAircraft(Aircraft As Long) As Long
Dim rst As DAO.Recordset
Dim dbs As DAO.Database
Dim str As String
str = "SELECT * FROM tblFlights WHERE AircraftID = " & Aircraft
[Code] ....
The code for the Form_Current event is this:
Private Sub Form_Current()
txtStats1 = FlightsByAircraft(Me.AircraftID)
Very simple. Well, the problem is when I move to a new record, a error message comes up: "Run-time error '94' - Invalid use of Null". It is because the AircraftID is not populated at that time. I tried to insert in the function code something like that:
Code:
If IsNull(Aircraft) then
exit function
else
.... (the DAO.Recordset code)
Private Sub Form_Current() Dim strTime As String Dim strHour As String Dim strMinute As String If (CollectionTime.Value) = "" Then MsgBox CollectionTime
The basic idea is that I need to insert a record into a table and then return the Key field so that I can use it to populate another table. This was working just fine for a while, then it stopped and naturally I can't think of anything I did to make it not work. I get an Invalid Use of Null error at the bolded step.
Dim SQL As String Dim SpecID As Long Dim VerifySpec As Variant ' Check for empty strings If Len(Me.txtNewPartNumber & vbNullString) = 0 Then Response = MsgBox("Part Number cannot be blank.", vbExclamation, "Missing Data") Exit Sub End If
The following code works fine until it gets to last record, then it give me Error # 94 Invalid use of null. I have searched all of my code and null is not in the code.
Code: '-------------------------------------------------------- ' Goes to next record '--------------------------------------------------------- Private Sub cmdNext_Click() On Error GoTo err_handler ' DoCmd.GoToControl (txtNameL) ' DoCmd.GoToRecord , , acNext
i have these code to auto generate member number but the highlighted line generate error 94 - invalid use of NULL:
Private Sub cmdGetNumb_Click() 'On click of button a new Member Number is generated and 'focus is moved to tFName field. Me![nMembNum] = NewMembNum() Me![tFName].SetFocus 'Prevent accidental click Me![cmdGetNumb].Enabled = False
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
This module is giving me the "undefined function" error message when I try to run my query. I don't know why, but I have checked that there are no references with "missing" and there are not. I also added the word "Public" to the function becasue that was advised by another forum user. I thought it worked perfectly the first time I ran this query, but now it is not working and I do not recall making any changes. I have called the module basFunctions:
Option Compare Database '************************************************* ********* 'Declarations section of the module '************************************************* ********* Option Explicit '================================================= ========= ' The DateAddW() function provides a workday substitute ' for DateAdd("w", number, date). This function performs ' error checking and ignores fractional Interval values. '================================================= ========= Public Function DateAddW(ByVal TheDate, ByVal Interval) Dim Weeks As Long, OddDays As Long, Temp As String
I know its not possible. But Just wanted to confirm. Not at all possible?
Code:
Function PreImport(BookToImport As Workbook) For Each cell In BookToImport.Sheets(1).Rows(1).Cells cell.Value = Trim(cell.Value) Next cell BookToImport.Sheets(1).UsedRange.Rows(1).Replace ".", "_" End Function
SELECT Payment_Mth, CDate(Payment_mth) AS Expr1 FROM Table1 WHERE (((Payment_Mth) Is Not Null And (Payment_Mth)<>"Does not apply" And (Payment_Mth)<>""));
I get a set of data along the following lines September 2007 01/09/2007 October 2007 01/10/2007 September 2007 01/09/2007 etc. which is what I want.
However, when I try to filter to show only a particular date, I get an error
SELECT Payment_Mth, CDate(Payment_mth) AS Expr1 FROM Table1 WHERE (((Payment_Mth) Is Not Null And (Payment_Mth)<>"Does not apply" And (NBReferral.Payment_Mth)<>"") AND ((CDate(Payment_mth))=#01/10/2007#));
I have found the error leads to this line but how can i stop the error?
Run-time error '94': Invalid use of Null.
Option Compare Database Option Explicit Dim Msg As VbMsgBoxResult Dim StartText As Long Dim TextToFind As String Dim TextToBeSearched As String Private Sub Form_Current()
I have a form with a subform. In the form's On Current event I have the subform's visible property set to false. There is a button that when clicked sets the subform's visible property to true. I want the subform to go to the first control in a new record which is a combo box. the subform is a multiple items form. I have tried the GoToControl in the subforms OnCurrent event, but it is not working. I get an error saying the database cant find a third form.
I want to call the "On Current" event of another form.
I have a parent(mainform) form and then I have a subform(CurrentForm) and in that subform(CurrentForm) I have another subform(mysubtab01). From the mySubTab01, I want to call the On Current of the parent form. How can i do this?
This is an example of how I am setting the record source of the deepest subform where I want to call the parent on current from:
Forms(mainform)(CurrentForm)(mySubTab01).Form.Reco rdSource = "Select * from subQrytab03"
I am developing a database for my company which will produce reports based on data entered on various forms.
When the report opens, I would like its name to dynamically change to include the site, the client and their reference number. Although I know very little VBA, from searching this and other forums I have managed to get this to work on other forms.
On a different form, I have managed this by giving the form the caption "Caption" and then running the following code on load:
However all this produces is "Property Assessment for , reference". If I try entering just "[SiteDetailsAddressLine1]", "[ClientDetailsName]" or "[PropertyAssessmentClientJobNumber]" I receive an Invalid use of Null error message.
If I create text boxes on the report for [SiteDetailsAddressLine1], [ClientDetailsName] and [PropertyAssessmentClientJobNumber] they are filled with the correct information so I know that these fields are not blank.
I have the following in a query to assign a sequence number to each record:
(SELECT Count(*) FROM [qryPTLActivity] AS T WHERE T.EmployeeID=[qryPTLActivity].[EmployeeID] AND T.PickDateTime <= [qryPTLActivity].[PickDateTime] AND T.PickAisle=[qryPTLActivity].[PickAisle])
I have used this in other databases without issue but for some reason this time I keep getting an "Invalid Argument for Function" error.
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.
I am using the following code (Sendobject) to create a PDF of a report and send it via email to a customer's email address.
Private Sub EmailWorkOrderQuote_Click() On Error GoTo Err_EmailWorkOrderQuote_Click Dim stDocName As String Dim mFilename As String Dim mEmailAddress As String
[Code] ....
It works fine except that the I want to to able to utilize the ability to send the email with either both the CC and BCC or either or neither as well.
I have a table called "My Company Information" that contains the email addresses for the CC and BCC. If I have values in these fields, everything works great! If I have no values in either of these fields, I get "Invalid use of Null"....
I want to be able to use either both CC and BCC, either CC or BCC, or neither used and it still work.
I'm trying to extract information from Err.Description within a form's Error event. Alas, Err.Description does not seem to be available from there.I have a form that normally displays in DataSheet view. If a trigger on the Oracle back-end raises an error, I want my Access app to be able to parse out Err.Description and deliver a more user-friendly message than ODBC's message. I want to get the info about the message from the error coming back from Oracle, not by matching up error codes.
If I change the form to Single-Form view and put a Save button on it, I can capture Err.Description in the command button's Clicked() event, and then parse out what I need.So if I must display this form in Datasheet view, where can I trap the ODBC error and display my user-friendly message?
I use access occasionally . How to find out why the Invalid Qualifier error keeps occuring. This is the code, and I've highlighted the line where it says its invalid qualifier:
Private Sub BtnAddBooking_Click() Dim CustomerID As String Dim StaffID As String Dim intPos As Integer Dim strSQL As String
main - [Welders fm], 2nd level - [PipingQualificationTickets tbl Subform] 3rd level - [WelderWps fm] This is a pop up form but is related to the 2nd level formVBA Error
I have a dropdown box [Wps] (3rd Level PopUp) with an after update function to lookup a query [DLookUpWeldWPS Qy] and insert the text into [Wps(s)QualifiedFor] on the 2 level [PipingQualificationTickets tbl Subform]
Connecting Access FE to SQL SERVER BE Connection is fine. I can open and close it and other queries work fine. I have only one problem with the SQL in one query
Code: With rstRPT If FirstRecord = True Then .Open "SELECT Min([" & SourceTbl & "].[3Order ID]) AS MinOf3OrderID " & _
[Code].....
why it wants to see the variable as a column name?
I am making my very first tentative steps to convert my most complex Access 2003 app to run under Access 2007. There are no obvious problems when simply opening my original MDB file in Access 2007 or running it after conversion to an ACCDB file. However, when I try to run the ACCDB file under the Access 2007 Runtime I get a "You can't carry out this action at the present time..." error. This is then followed by the "Execution of this application has stopped due to a runtime error..."
To be more specific, I only get that error when I deliberately hide the back end database and thus invoke code triggered via Autoexec to allow the user to browse for the missing database. This code works fine when running under normal Access 2007 so it appears to be a Runtime issue.
Hi, I have some problem with assigmnet with date and string variable. what i wana do is get data from Forms textboxes into variable and then by insert query send to history table.
the problem occurs when there is blank textbox its says invalid use of null.
