This article applies to a Microsoft Access database (.mdb/.accdb) and to a Microsoft Access project (.adp).
For a Microsoft Access 2000 version of this article, see
Note This article explains a technique that is demonstrated in the sample file, FrmSmp00.mdb.
For additional information about how to obtain this sample file, click the following article number to view the article in the Microsoft Knowledge Base:
Microsoft provides programming examples for illustration only, without warranty either expressed or implied. This includes, but is not limited to, the implied warranties of merchantability or fitness for a particular purpose. This article assumes that you are familiar with the programming language that is being demonstrated and with the tools that are used to create and to debug procedures. Microsoft support engineers can help explain the functionality of a particular procedure, but they will not modify these examples to provide added functionality or construct procedures to meet your specific requirements.
- Open the sample database Northwind.mdb.
- Create a new form that is not based on any table or query with the following combo boxes, and then save the form as Categories And Products.
NOTE: If you are in an Access project, the RowSourceType will be Table/View/StoredProc.
Combo Box 1
AfterUpdate: [Event Procedure]
Combo Box 2
- Add the following code to the AfterUpdate event procedure of the Categories combo box:
Me.Products.RowSource = "SELECT ProductName FROM" & _
" Products WHERE CategoryID = " & Me.Categories & _
" ORDER BY ProductName"
Me.Products = Me.Products.ItemData(0)
- View the Categories And Products form in Form view. Note that when you select a category in the first combo box, the second combo box is updated to list only the available products for the selected category.
NotesIn this example, the second combo box is filled with the results of an SQL statement. This SQL statement finds all the products that have a CategoryID that matches the category that is selected in the first combo box.
Whenever a category is selected in the first combo box, the AfterUpdate property runs the event procedure, which sets the second combo box's RowSource property. This refreshes the list of available products in the second combo box. Without this procedure, the contents of the second combo box would not change.
Article ID: 289670 - Last Review: Jan 7, 2017 - Revision: 1