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Trying to get a field to generate contents automatically on a form
I am trying to use access 2003 to record rider details and keep lap times at
a local enduro race. I am trying to input riders details. There are a few classes of competitors, a grade (rider number 100-199), b grade (rider number 200-299) etc. I have set up an optiion group for rider class so if a grade is ticked it comes back with the response 100 and 200 for b grade etc. What I need in the rider number box is the next available rider number to be generated automatically. For instance if the a grade option is ticked and the largest rider number in the 100's already stored in the table is 103 then it automatically comes up with 104 as the rider number. All classes rider numbers are stored in the one table at this stage. Does it make it easier if I have a table for each class. I don't know how to make a form look at multiple tables. I have developed a query that can determine the highest number used in any class based on an input of (100, 200 etc) but don't know how to use a query from a form if this is an option. I have a very limited experience with access and vba so may need very detailed help if possible but any advice will be gladly accepted. Thanks |
#3
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Trying to get a field to generate contents automatically on a form
"NDBC" wrote in message
... I am trying to use access 2003 to record rider details and keep lap times at a local enduro race. I am trying to input riders details. There are a few classes of competitors, a grade (rider number 100-199), b grade (rider number 200-299) etc. I have set up an optiion group for rider class so if a grade is ticked it comes back with the response 100 and 200 for b grade etc. What I need in the rider number box is the next available rider number to be generated automatically. For instance if the a grade option is ticked and the largest rider number in the 100's already stored in the table is 103 then it automatically comes up with 104 as the rider number. All classes rider numbers are stored in the one table at this stage. Does it make it easier if I have a table for each class. I don't know how to make a form look at multiple tables. I have developed a query that can determine the highest number used in any class based on an input of (100, 200 etc) but don't know how to use a query from a form if this is an option. I have a very limited experience with access and vba so may need very detailed help if possible but any advice will be gladly accepted. Thanks I'm assuming that you're using a form to manipulate your data (as you should be!). I'm also assuming that you have a text box called "txtUniqueNo" bound to a field "UniqueNo" in table "tblEnduro" and your option group is bound to a number field "Class" and is called "ogrClass" and that the option values are 100 (a), 200 (b) etc. Something like this should work in the form's Before Update event (untested): Me.txtUniqueNo = Nz(DMax("UniqueNo", "tblEnduro", "[Class] = " & Me.ogrClass)+1,Me.ogrClass) The "Nz" handles the case where there is no number for the selected class, in which case it will take the value assigned to the selected option. If your Class field is a text field then you'll need to use quotation marks: Me.txtUniqueNo = Nz(DMax("UniqueNo", "tblEnduro", "[Class] = ' " & Me.ogrClass & " ' ")+1,Me.ogrClass) I've included extra spaces around the single quotes for clarity, you should not include them in your code. The number will be assigned when the record has been saved. Hope that makes sense. Keith. www.keithwilby.co.uk |
#4
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Trying to get a field to generate contents automatically on aform
hi,
NDBC wrote: I have developed a query that can determine the highest number used in any class based on an input of (100, 200 etc) but don't know how to use a query from a form if this is an option. You can use DLookup(), e.g. in the form's Before Update event Private Sub Form_BeforeUpdate(Cancel As Integer) Me![RiderNumber] = DLookup("[Number]", "yourQueriesName") End Sub mfG -- stefan -- |
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