ACC2000: Parameter Prompt If LinkMasterFields or LinkChildFields Contains Table Name

ID: Q207662

The information in this article applies to:

Microsoft Access 2000

This article applies to a Microsoft Access database (.mdb) and a Microsoft Access project (.adp).

Moderate: Requires basic macro, coding, and interoperability skills.

SYMPTOMS

When you open a form that contains a subform or a report that contains a subreport, you may receive an unexpected prompt to enter a parameter value.

CAUSE

The LinkMasterFields or LinkChildFields property of the subform or subreport contains a reference to the underlying table or query. This table or query could be the record source of the main form, the main report, the subform, or the subreport. The property's value is in the format

MainTable.FieldName

Because the reference to the table or query underlying the form or report is implied, it is not necessary to include the table or query name in the LinkMasterFields or LinkChildFields property.

RESOLUTION

Use one of the following resolutions to correct the behavior of the form or report:

Do not refer to the underlying table or query in the LinkMasterFields or LinkChildFields property.

-or-

Refer to a control name on the main form or report that contains the appropriate value for the link criteria.

MORE INFORMATION

Steps to Reproduce Behavior

Open the sample database Northwind.mdb.

In the Database window, click Forms under Objects, and then click New.

In the New Form dialog box, click Form Wizard, and then click OK.

On the first screen of the Form Wizard, click Table: Categories in the Table/Queries list.

Move the CategoryID, CategoryName, and Description fields from the Available Fields list to the Selected Fields list.

Click Table: Products in the Table/Queries list.

Move the ProductID, ProductName, CategoryID, and UnitPrice fields from the Available Fields list to the Selected Fields list, and then click Next.

On the screen that asks you how you want to view your data, click By Categories, and then click to select Form with subform(s). Click Next.

When asked what layout you would like for your subform, click to select Datasheet, and then click Next.

When asked what style you would like, click Standard, and then click Next.

When asked what titles you want for your forms, type frmLinkMain in the Forms box and frmLinkSub in the Subform box. Then click Finish.

On the View menu, click Design View.

Right-click frmLinkSub, and then click Properties.

Change the LinkChildFields property to Products.CategoryID, and change the LinkMasterFields property to Categories.CategoryID.

View the form in Form view.

Note that you are prompted for the parameters Categories.CategoryID and Products.CategoryID.

REFERENCES

For more information about linking main forms and subforms or main reports and subreports, click Microsoft Access Help on the Help menu, type "LinkChildFields, LinkMasterFields Properties" in the Office Assistant or the Answer Wizard, and then click Search to view the topics returned.

Additional query words: param prompts


Keywords          : kbdta FmrOthr 
Version           : WINDOWS:2000
Platform          : WINDOWS 
Issue type        : kbprb

Last Reviewed: May 13, 1999