• Status: Solved
  • Priority: Medium
  • Security: Public
  • Views: 606
  • Last Modified:

SubForm Link criteria when using form visible true or false

Can I use a version of the following when simply making a subform visible or invisible rather than opening and closing. I'm trying to keep invisible subform synchronized with main and have the link field in subform populated when I add a new record to the main form

    Dim stLinkCriteria As String
    stLinkCriteria = "[ItemNumber]=" & Me![ItemNumber]
    DoCmd.OpenForm "MoreDetails", , , stLinkCriteria
0
Derek Brown
Asked:
Derek Brown
  • 3
  • 3
1 Solution
 
mbizupCommented:
You use the filter criteria:


    Dim stLinkCriteria As String
    stLinkCriteria = "[ItemNumber]=" & Me![ItemNumber]
    Me.YourSubformControlName.Form.Filter = stLinkCriteria
    Me.YourSubformControlName.Form.FilterOn = True

Open in new window

0
 
mbizupCommented:
Is this 'subform' a popup or a true subform embedded in the main form?  If it is an embedded subform, then you can synchronize the sub and main form by including the Item Number in the master/child  links.
0
 
Derek BrownMDAuthor Commented:
Thank you

I have a linked field in the sub/mainform

It's a true subform.  As with all subforms I find that the most frustrating thing is that when moving to a new record the subform link field is not made until the main form has been saved or edited first. So you can get this ridiculous situation where the user moves to a new record and immediately tries to enter information in the visible subform Causing a "cannot update" error. So I make the subform invisible until data is added and saved to the main form.

So now when I click the make subform visible button on a main form that has not been saved I would be forced to give message "enter information on the main form first". To overcome this When the user clicks the make subform visible button I have to save the main form and then code

If IsNull(subform linked field)=true  then
subform linked field= Mainform Linked field.
end if

That's why I asked is there something like the code for on open. I can see how the form filter code will work but does it overcome the problem of a new record as above?
0
Cloud Class® Course: SQL Server Core 2016

This course will introduce you to SQL Server Core 2016, as well as teach you about SSMS, data tools, installation, server configuration, using Management Studio, and writing and executing queries.

 
Derek BrownMDAuthor Commented:
Thank you

I have a linked field in the sub/mainform

It's a true subform.  As with all subforms I find that the most frustrating thing is that when moving to a new record the subform link field is not made until the main form has been saved or edited first. So you can get this ridiculous situation where the user moves to a new record and immediately tries to enter information in the visible subform Causing a "cannot update" error. So I make the subform invisible until data is added and saved to the main form.

So now when I click the make subform visible button on a main form that has not been saved I would be forced to give message "enter information on the main form first". To overcome this When the user clicks the make subform visible button I have to save the main form and then code

If IsNull(subform linked field)=true  then
subform linked field= Mainform Linked field.
end if

That's why I asked is there something like the code for on open. I can see how the form filter code will work but does it overcome the problem of a new record as above?
0
 
mbizupCommented:
Ahh... I understand what you're asking now.

The users really *should* enter something in the main record before moving to the subform, and there should be certain required field(s) needed to start a mainform record.  This approach allows Access to do what it should do (prevent orphaned records, while automatically creating the linked ID *at appropriate times*)

 A good way to handle this is to leave the subform visible, but to add code to the Enter Event of the subform control (this is in the main form's design):

If me.newrecord = false then exit sub
If Me.SomeRequiredField & "" = "" then
    ' If the required field is empty then force the focus out of the subform with a user friendly message
    MsgBox "You need to enter data in field xyz before creating related records"
    Me.SomRequiredField.SetFocus
Else
   Me.Refresh     '<---- saves the data, and allows the user to enter subform data.
                           ' At this point, the subform link will automatically be created
End if

Open in new window

0
 
Derek BrownMDAuthor Commented:
Many thanks!!

Derek
0
Question has a verified solution.

Are you are experiencing a similar issue? Get a personalized answer when you ask a related question.

Have a better answer? Share it in a comment.

Join & Write a Comment

Featured Post

Free Tool: Subnet Calculator

The subnet calculator helps you design networks by taking an IP address and network mask and returning information such as network, broadcast address, and host range.

One of a set of tools we're offering as a way of saying thank you for being a part of the community.

  • 3
  • 3
Tackle projects and never again get stuck behind a technical roadblock.
Join Now