ACC2000: Four Ways to Move to a Record from a Combo Box Selection

• In the AfterUpdate property of the combo box, call a macro that uses the FindRecord action.
• In the AfterUpdate property of the combo box, call a macro using the ApplyFilter action.
• Use a Form/Subform, with the combo box in the main form and the data in the subform, bound by the LinkMasterFields and LinkChildFields properties.
• Base the form on a query that joins two tables, and use the AutoLookup technique to bind the combo box to the field that controls the join.

   Method Number:                  1   2   3   4
   ---------------------------------------------
   Requires no code/macros                 x   x
   Saves on subforms               x   x       x
   Can scroll to other records     x       x   x
   Does not require a query        x   x   x
   Can edit records                x   x   x
				

Method 1

1. Create a form called frmComboTest based on the Products table, and set the form's DefaultView property to Single Form.
2. Add an unbound combo box by using the Control Wizard. (To use the Control Wizard, make sure that the Control Wizards button is pressed in on the toolbox before you create the combo box.) In the Control Wizard dialog box, follow these steps:
   
   
   1. Click the Find a record on my form based on the value I selected in my combo box button, and then click Next.
   2. Include the ProductID and ProductName fields, and then click Next.
   3. Click Finish.
   The Control Wizard creates an event procedure similar to the following:

   Sub ComboNN_AfterUpdate()
      'Find the record that matches the control.
      Me.RecordsetClone.Findfirst "[ProductID] = " & Me![ComboNN]
      Me.Bookmark = Me.RecordSetClone.Bookmark
   End Sub
   					

3. View the frmComboTest form in Form view. Note that when you choose a product name in the combo box, you are moved to the record selected.

Method 2

1. Create a form called frmComboTest based on the Products table, and set the form's DefaultView property to Single Form.
2. Set the Filter property for the frmComboTest form to the following:
   [ProductName] = Forms![frmComboTest]![cboLookup]
3. Add an unbound combo box called cboLookup, and set the control's properties as follows. The combo box can be located anywhere on the form, but preferably in the form header or footer.

      Combo Box
      ----------------------------------------------
      ControlName: cboLookup
      ControlSource: <leave blank>
      RowSourceType: Table/Query
      RowSource: Select [ProductName] from Products;
      BoundColumn: 1
      ColumnWidths: 1"
      AfterUpdate: mcrLocateProduct
   					

4. Create the following macro called mcrLocateProduct:

      Macro Name          Action
      ----------------------------
      mcrLocateProduct    SetValue
                          Requery
   
      mcrLocateProduct Actions
      --------------------------------------
      SetValue
      Item: Forms![frmComboTest].FilterOn
      Expression: True
   					

Method 3

1. Create a new form not based on any table or query. Add a combo box, and set the control's properties as follows:

      Combo Box
      ----------------------------
      ControlName: cboLookup
      ControlSource: <leave blank>
      RowSourceType: Table/Query
      RowSource: Products
      ColumnCount: 4
      ColumnWidths: 0";2"
      BoundColumn: 1
   					

2. Create a second form based on the Products table to use as a subform, and set the form's DefaultView property to Single Form.
3. Add the following text box to the form:

      Text Box
      ------------------------
      ControlName: ProductID
      ControlSource: ProductID
      Visible: Yes
   						

   NOTE: Include at least the ProductID field on the new form. However, additional fields may help to illustrate that you have changed records based on the value selected in the combo box.
4. Save the form, and then use it to create a subform control on the first form by dragging it from the Database window to the detail section of the first form.
5. Set the subform control properties as follows:

      Subform
      ----------------------------
      LinkChildFields: [ProductID]
      LinkMasterFields: cboLookup
   					

Method 4

1. Create a table called tblProductSelect that has a single field, ProductID. Set the field's Data Type to Number and the Field Size to Long Integer. A primary key is not necessary. Also, you should add no records to this table.
2. Create the following query called qryProductSelect, based on a join between the ProductID fields of the tblProductSelect and Products tables. Include the following attributes in the query:

      Query: qryProductSelect
      -----------------------------------------------
      Field: ProductID
      Table Name: tblProductSelect
      Show: X (checked on)
   
      Field: <any other fields you are interested in>
      TableName: Products
   					

3. Create a form based on qryProductSelect, and add all fields. You must add at least the ProductID field.
4. Delete the text box control for ProductID and re-create it as a combo box, as follows:

      Combo Box
      --------------------------
      ControlName: ProductID
      ControlSource: ProductID
      RowSourceType: Table/Query
      RowSource: Products
      ColumnCount: 1
      ColumnWidths: 2"
      BoundColumn: 1