How To Add Constraint To Access Bounded Form.
Jun 26, 2005
Hi everybody .I created a bounded form that allows user to enter the following fields information
to the sql server db that is linked to access .The fields are: Projectno, taskcode, taskdiscription
and total hours worked.
I want for example when a user tries to enter total hours work for a user (Hours in hours worked table) and
if he did not already enter wages of the employee for that particular project (amount in hourly wages table)
that user get a massage prompt and ask user to enter amount in to hourly wages table first. Possibly opening that form.
I be happy if some one help me add this feature to my form. Thanks
http://i5.photobucket.com/albums/y180/method007/constraint.jpg (table reletionships pic)
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Sep 9, 2005
Hi,
I have developed a small hotel booking system which inserts records into a reservations table. The table looks like this:
[ReservationNr][StartDate][EndDate][RoomNr]
I am now trying to add a constraint which prevents a room from beeing booked twice on the same day, hence the time period defined by StartDate and EndDate in a record must not overlap with another record.
Is Access capable of adding such a constraint?
It was easy to add a constraint that prevents a booking where the StartDate is before the EndDate, but this one needs to reference already existing records.
Any help would be much appreciated.
Thanks
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Jun 19, 2005
Hi guys. I made bounded maintenance form customer table in my access db.
But when I try to delete a record by clicking on the delete button I get
the following error. I be happy if some one help me delete record successfully. Thanks
Code:Run-time error '91'Object variable or with block variable not set
http://i5.photobucket.com/albums/y180/method007/deleteerror.jpg
pic ===>delete error
Code:Option Compare DatabasePrivate Sub cmdSearch_Click() Dim strStudentRef As String Dim strSearch As String 'Check txtSearch for Null value or Nill Entry first. If IsNull(Me![txtSearch]) Or (Me![txtSearch]) = "" Then MsgBox "Please enter a value!", vbOKOnly, "Invalid Search Criterion!" Me![txtSearch].SetFocus Exit SubEnd If'--------------------------------------------------------------- 'Performs the search using value entered into txtSearch'and evaluates this against values in customerno DoCmd.ShowAllRecords DoCmd.GoToControl ("customerno") DoCmd.FindRecord Me!txtSearch customerno.SetFocus strStudentRef = customerno.Text txtSearch.SetFocus strSearch = txtSearch.Text 'If matching record found sets focus in customerno and shows msgbox'and clears search control If strStudentRef = strSearch Then MsgBox "Match Found For: " & strSearch, , "Congratulations!" customerno.SetFocus txtSearch = "" 'If value not found sets focus back to txtSearch and shows msgbox Else MsgBox "Match Not Found For: " & strSearch & " - Please Try Again.", _ , "Invalid Search Criterion!" txtSearch.SetFocus End IfEnd SubPrivate Sub Command14_Click()'''On Error GoTo Err_CmdAdd_Click '''Me.DataEntry = True '''Me.CmdFilter.Visible = False '''Me.CmdShowAll.Visible = True '''DoCmd.GoToRecord , , acNewRec If DCount("*", "Customer") = 0 Then Me.customerno = 1 Else Me.customerno = DMax("Customerno", "Customer") + 1 Me.customerName.Value = " " End If '''Exit_CmdAdd_Click: '''Exit Sub'''Err_CmdAdd_Click: '''MsgBox Err.Description '''Resume Exit_CmdAdd_ClickEnd SubPrivate Sub cmdDelete_Click()Dim x As Variantx = MsgBox(" You are abut to delete " & Me.customerName & " from this table - proceed ? ", vbOKCancel)If x = 1 ThenWith myRS.Delete.MoveFirstEnd WithEnd IfEnd Sub
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Jun 19, 2005
Hi guys I am creating maintenance form to update and add new records to department table.
But when I try to edit department field in employee table.
(I get the following error.I get same when try to add new record.)
Error:
You cannot add or change a record becasue a related record is required in table department
http://i5.photobucket.com/albums/y1...gdepartment.jpg
==> pic of error errroupdatingdepartment
http://i5.photobucket.com/albums/y1...eletionship.jpg
===> timekeepingreletionship
I be happy if some expert help me how to update and add new record to department table successfully without the above error and without changing the db structure.
Thanks
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Sep 29, 2014
I am developing a simple database for students to register courses using Microsoft Access 2010. I have 4 tables: Student, Register, Course, and Section (1 Course can have many Sections).
Then, there is a criteria that a student can only take up to 6 courses. Hence, may I know that where and how can I include this constraint? I believe that it should be in the Macro (Before Change) of the table Register...
My relationship is: Student -> Register <- Section <- Course
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Nov 2, 2005
I was hoping to run this by you guys to see if I'm doing anything horribly wrong. I have done a number of searches related to custom Autonumbers and I think this is okay but any suggestions/confirmations would be greatly appreciated.
I want to create a random Primary Key that will also be used as an item #. I know that in many cases this is frowned upon *but* I do not need the number to hold any significance I just want it to be unique. However I want to represent the item # as a set of 6 Hex digits so the standard Long Integer is too large. 16^6 = 16777216. No 0 index so 16777215.
I create my own bounded number with a macro (=Int(Rand(16777216-1))+1 )and put that as the default value. It is indexed and set to no duplicates. Is this correct?
When I display the field in a form or report I call a module which translates the number into Hex and appends leading zeros. I am currently having a problem where inserting a new record does not display the translated index correctly, but after it has been inserted it is fine.
If you have any comments or suggestions about how this could work even better (or if this wont work at all!) please let me know.
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Feb 25, 2005
In Oracle, you can set up table constraints which constrain data accross mutliple attributes/fields. Can you do this in Access?
For example. I have:
OrderLine(orderNum,orderLineNum,[productNum],date)
I dont want to allow for the same product to be put on one order twice. Therefore, (orderNum,productNum) must be unique, but productNum is not a part of the primary key so it can be repeated in every row for all the database cares. :P
How can I set this up.
In Oracle I would do something like:
CONSTRAINT chk_prod CHECK UNIQUE (orderNum, productNum)
Thanks for any help.
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Sep 3, 2007
I have an Access 2002 database with a relationship between 2 tables I want to delete using VB code. I setup the relationship from within Access. Is there a way to find out the name of the relationship, if there is such a thing. The tables are: TableA.Id linking to TableB.BankAcctId with both cascade functions. What would the VB code look like? Something like ALTER TableB DROP CONSTRAINT ...
Thanks
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Jun 23, 2005
Hi guys i a have bounded form that supposed to update/add and delete records from customers table. But it is acting very weried when i try to use it. For example in the pic below it shows my form trying to
add a new record number 8 .
http://i5.photobucket.com/albums/y180/method007/tryingtoaddrecord.jpg
After i added new record and if i press the button to bring me to first record i see my new record added to begining of list and if i press button to take me to last record which is number 8 it shows its customername value as blank! I be happy if some one help me fixt this strange problem. Also the first record in the db get delete with new record!
http://i5.photobucket.com/albums/y180/method007/beforeaddingrecords1.jpg ( value in table customer before adding new record)
http://i5.photobucket.com/albums/y180/method007/lastrecordshowsblank2.jpg
http://i5.photobucket.com/albums/y180/method007/afteraddingnewrecord3.jpg ( vlaus in table customer after adding new record .first record get deleted with out my intention!)
Now if i try to delete a record. should i number all the records or not ? I be happy if some one show me how to solve this problem as well.Thanks
http://i5.photobucket.com/albums/y180/method007/beforedeleting4.jpg ( values of customer table before deleting record)
http://i5.photobucket.com/albums/y180/method007/afterdeleting5.jpg
(values of customer table after deleting records)
-----------------------------------------------------------
my code
[code]
''' code for adding new record . This part run when the button is clicked
Private Sub Command14_Click()
If DCount("*", "Customer") = 0 Then
Me.customerno = 1
Else
Me.customerno = DMax("Customerno", "Customer") + 1
Me.customerName.Value = " "
End If
End Sub
'''' this part delets the current record
Private Sub cmdDelete_Click()
DoCmd.DoMenuItem acFormBar, acEditMenu, 8, , acMenuVer70
DoCmd.DoMenuItem acFormBar, acEditMenu, 6, , acMenuVer70
End Sub
[code]
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Jul 13, 2013
I have:
1) a table (T) with fields (F1, F2, .... , Fk, .... Fn). I do not know "n"
2) a form (F) bounded to this table
I know that I have a control bounded to field Fk.
How I can find what control is ?
Something like this:
Dim MyCtl As Control
Dim ctl As Control
For Each ctl In Controls
If ctl IsBoundedToFieldFk Then
Set MyCtl = ctl
Exit For
End If
Next ctl
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Mar 13, 2005
I have a table with the following fields:
format
region
rarity
they are all set to lookup value lists:
format: tape; dvd
region: 0;1;2;3;4;5;6;7;8;pal;ntsc
rarity: 1;2;3;4;5
I have a check that makes sure (format, rarity, region) is unique.
It works fine until i set region to either "pal" or "ntsc", then I get the following error.
"Error 'Error evaluating CHECK constraint. ' in the validation rule."
I set up the constraint by going to table design view -> indexes -> created new index with each of the three fields listed one after another -> set to primary=no, unique=yes, ignore nulls=no.
Can anyone help me work out why im getting this problem?
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Jul 11, 2013
I have two combo boxes containing integers on a form. How can I store the values of these combo boxes in a field of a table separating them by comma or semi colon?
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Jun 29, 2005
Hi guys i got a form and sub form. When i leave the field hours empty in the sub form and try to click on close or some where in the form i get this error:
MsgBox "Primary key violation", , "Explanation"
instead of
MsgBox "Violation of Not Null constraint", , "Explanation"
i want to trap not null error and prompt the user that he has to enter value for hours field but aparently it does not. i be happy if some one help me fix this error .Thanks
picture of form in action:
http://i5.photobucket.com/albums/y1...tnullerror1.jpg
http://i5.photobucket.com/albums/y1...tnullerror2.jpg
code for on error :
Code:Private Sub Form_Error(DataErr As Integer, Response As Integer)Select Case DataErr Case 3162 MsgBox "Violation of Not Null constraint", , "Explanation" Case 3146 MsgBox "Primary key violation", , "Explanation" Case 3155 MsgBox "Trigger violation: 'Wages of the employee in this project is not existed. You must enter data of hourly wage first'", , "Explanation" Case Else MsgBox "Other errors" End SelectEnd Sub
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Dec 4, 2013
Access 2007
In a table I have 2 fields:
D1 , Date/Time , DefaultValue: Date()
D2 , Date/Time , DefaultValue: Date()+1
In a form (bounded to this table) I have, of course, 2 controls bounded to this fields:
txtD1 and txtD2
If the user change the value in txtD1 (using the Date picker) I like to change the DefaultValue for txtD1 to the new date and the DefaultValue for txtD2 to the new date + 1 day. Something like this:
Code:
Private Sub txtD1_AfterUpdate()
Me.txtD1.DefaultValue = Me.txtD1
Me.txtD2.DefaultValue = Me.txtD1 + 1 day
End Sub
I tried whatever crossed my mind... with the same "result" : #Name?
My Regional settings:
Short date format: dd.MM.yyyy
Date separator: Dot
Simple: 05.12.2013
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Aug 17, 2005
Hi all. I want to check for not null value constraint for all tables in database . I tried the following but when i run it i get the following error:
Compile error:
Invalid Next control variable reference
I be happy if some one one help me fix this error.if i remove the bold lines the program workes well but it does not put not null for table fileds that requries value.
picture of the output without the bold part
http://i5.photobucket.com/albums/y1...007/notnull.jpg
Code:Option Compare Database''This module displays field name and type in a massage boxFunction ShowFields(pTable As String) As StringDim db As DatabaseDim rs As RecordsetDim I As Integer''Dim j As IntegerDim n As Integer''Dim NL As StringDim strHold As String, ST As String''Dim x As Variant''NL = Chr(13) & Chr(10) ' Define newline.Set db = CurrentDbSet rs = db.OpenRecordset(pTable)n = rs.Fields.CountReDim x(n - 1, 1) As String'''ST = "Create Table " & pTable & vbCrLf''adding Create table and table name to statementST = "Create Table " & pTable & vbCrLf & "("For I = 0 To (n - 1)For Each fld In tbl.Fields ST = ST & rs.Fields(I).Name & " " & FieldType(rs.Fields(I).Type) & "," & vbCrLf If fld.Required = True Then ST = ST & " NOT NULL" & " " Else ST = ST End IfNext Irs.Closedb.CloseSet db = NothingShowFields = ST '' returns the fields name to main functionEnd Function
on click even code
Code: For Each T In db.TableDefs '''Skip the system tables If Left(T.Name, 4) <> "MSys" Then ''' this line determines the primary key of the table ''' by calling GetPk function from module pk = Left(GetPK(T, db), InStr(1, GetPK(T, db), "<-") - 1) cont = cont & ShowFields(T.Name) & vbCrLf & " primary key " & "(" & pk & ")" & vbCrLf & ")" & vbCrLf End If Next T ''' This line of code post the generated table statment to a massage box MsgBox cont
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Apr 6, 2008
Can anybody help me understand why I get the error
"Syntax error in CONSTRAINT clause"?
I get it in Access 2003 and Access 2007.
Both are clean installs with no add-ins
Running this code in VBA, or pasting the SQL directly in a query results in the same error.
Sub test()
sTableName = "Test"
sSQL = "CREATE TABLE " & sTableName & "_Config (" _
& "[idConfig] Int Primary Key," _
& "[Config] Memo," _
& "[Instrument] int," _
& "[Serial_No] Text(25)," _
& "[Firmware] int," _
& "[Orientation] int," _
& "[Sensors] int," _
& "[Sensor_Size] float," _
& "[Sensor_1_Distance] float)"
DoCmd.RunSQL sSQL
sSQL = "CREATE TABLE " & sTableName & "_Leader (" _
& "[idLeader] Int Primary Key," _
& "[idGroup] int," _
& "[idFile] int," _
& "[idConfig] int," _
& "[DateTime] DateTime," _
& "[Heading] float, [Pitch] float, [Roll] float," _
& "[Pressure] float, [Depth_BSL] float, [Height_ASB] float,"
_
& "[Min_Valid_Sensor] int, [Max_Valid_Sensor] int," _
& "[ASM_Bed_Level] float," _
& "CONSTRAINT [FK_Test_Leader_idConfig] FOREIGN KEY ([idConfig]) REFERENCES [Test_Config] ([idConfig]) ON DELETE CASCADE ON UPDATE CASCADE" _
& ")"
DoCmd.RunSQL sSQL
End Sub
The first table is created just fine.
And if I leave the constraint clause out, the second table is created also.
If I try to run it as an SQL query right in Access, after the error is delivered, it highlights the word DELETE, and if I reverse the update and delete portions, it highlights the word UPDATE.
I have looked up the clause in Access help and even using their example, i get the same error.
Any help will surely be appreciated!
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Sep 22, 2014
Error: Error evaluating check constraint in the validation rule
What does this mean?
I have used a combo box in the table to input into 2 fields - one restricted to numbers 1 to 5 and the other restricted to letters A to E
Message comes up when I try to change the view or press submit. Does it have anything to do with the field type?
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Sep 9, 2005
Using Access's User and Group Accounts or Using a Login Form to access database?
I've been researching on how to make a database secure. How to create User and Group Accounts on access, I see the step by step instructions and tried it out myself.
I also saw some sites where they give an example of a Login Form and how to create one.
My question is do you need to create both. First create the users and groups to permit or deny access to certain forms and then have a login form?
But would that mean that they'd have to login twice? Once when the database opens because it activates the db security that was created and then login again in the login form that was created?
Also when the user logins in and clicks on the cmd button on the form which opens up another from, frmWorkLog, I have an Employee field. This field I want it to have the user's name entered automatically and "locked". So that info, employee name, is extracted from the user's login. So then the user can only see his or her records only and no one elses.
How would I go about creating that. Hope I made my explanation clear.
Thanks in advance.
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May 3, 2014
I have a simple access search form , that's based on a query that fill parameters from the form textboxes, when the access form loads its keeps prompting for parameters value which looks ugly .. I want to open the form, displaying all the records in the table and filter when i click search ..
I have a data entry entry form, that i want to generate success message after successful insert in database. I have done it in the button event if no error happens, still if i left all fields blank and clicked save, it displays the message ..
I need to change that to display please fill the textboxes then click save , and display success message when the row is actually inserted ..
Check the following attachment for sample.
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Aug 7, 2013
I have made a form on access which will be used by other employees within the company, however they have never used access before and they are wanting to access only just the form as I feel with Access and all the tools in the background will confuse them, plus I don't want them editing the data base its self.
Is there a way to only bring up the form, unless I obviously need to edit the date base.
I've done some research on Google and it seems I need to use:
SW_SHOWMINNOACTIVE
However I can not seem to find how I would use this or where?
and also if i did find a way to only bring up the form, how would I be able to switch it from that veiw to the veiw I edit in?
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Mar 28, 2007
Hi,
I have a database (.mdb file) which includes a table, forms and VB code. I intend on putting it onto a CD and then opening the form on another computer which may not have Access. Is this possible? Can I convert the file or can I attach some type of reader to the disk?
I have seen some software for download on the internet which allows you to open the tables however the Form is the most important thing in this case (but I take it whatever I use, it will need to be able to view the VB, subforms and tables as well since the Form depends on them?).
...also can I install an auto-run to the file for when the disk is inserted? (this is not a major issue though).
Thanks.
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Jun 13, 2006
I am very new at Microsoft Access. I have two forms, A and B, that are filled out by two different users. Form A gets filled out first than form B gets filled out. Each has a name box as well as a birthdate box and a few other similar text fields. However, each form also has a few distinctive fields. I was wondering how I could input the common information in Form A to Form B so the user of Form B does not have to spend time retyping the name and birthdates again. In other words, I want to synchronize the similar records between the two forms. I would like the values to appear in a table as well. I would greatly appreciate it if someone could help me with the visual basic code. Thank You.
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Mar 14, 2013
I am using Access 2010 - Version 14.0.61.29.5000 (32-bit)
I am building a custom Export Wizard to export data to Excel using the Report Wizard for the basic ideas.
All I am trying to do is have a [Back] button on a form to open another form and close the current form.
Private Sub cmdBack_Click()
DoCmd.OpenForm "frm_ExportWizardPage2", , , , , , Nz(Me.OpenArgs)
DoCmd.Close acForm, "frm_ExportWizardPage3"
End Sub
The new form is opening but then the current form is not closing. All forms are the same size, shape and positioned centrally although this should not make any difference.
Could this be anything to do with which form has the focus when I open the new form?
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Nov 24, 2014
I have a Lost/Found property database which we use to keep record of the lost/found property and it is working fine.
As per our organization's policy, we keep the item(s) for up to three months in which if it gets restored to the owner then fair enough otherwise after three months the item(s) can be claimed by the "Finder". But for this very purpose we issue the Finder with a "Claim Receipt" which he/she should bring in when claiming for the item(s) after three months period. Therefore, It's just the right time to upgrade the database to a more professional level.
The database has one table and two forms.
One form (LostFoundForm) is visible to the user in which they enter data, this form has two sections; Item(s) & Finder's details and the second section is about Restoring details.
However the second form (ClaimReceiptForm) is hidden to the users (for manual data entry) and has only one section which is exactly the same as the first form's first section, i.e., Item(s) & Finder's details. This second form takes the data automatically from the first form because the table behind them is same and fields are same (please see attachment). Up to here it's all working fine.
I would like to introduce a Checkbox or a CommandButton in the LostFoundForm which when we click should pull up a msgbox asking "Do you want to print the receipt for this item(s)?" with a Yes/No option. On clicking "No" it should, obviously, settle down but on clicking "Yes" it should print the "corresponding record" from the ClaimReceiptForm.
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Mar 10, 2013
I have a Form called X which contains a subform called Y. I have placed this Form inside another form called Z.
There is a CommandButton which when clicked must refer to the Subform. How do I do this?
I tried using [Z]![X]!Y, Form_Z.Form_X.Y, [Z]![X].Y but it throws an error saying the form name has been misspelled ...
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Apr 3, 2014
I have a form that I can view in Design view and layout view just fine.
BUT --
If I just try to open the form in from view, it disappears somewhere even though it says it's open.
If I view it in Layout view first, then Form view, it shows.
I've removed any code behind to try and figure out what's going on but it still happens.
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