在子表单中访问子表单我无法访问字段值

Question

I have a problem regarding an Access Project.

Indeed, I have a subform sub2 within a subform sub1 which is in a main form main .

In sub2 , I have a button that opens a new form created from a SQL query. This query is using in its "where" the value of a field of sub2 .

The opening of the new form is good when I am only using sub2 .

However, when I am doing the exact same thing through the main form, sub2 requires me to enter a data instead of automatically opening the new form.

My SQL query is SELECT Livres.* FROM Livres WHERE (((Livres.ID_livre)=[Formulaires]![Livre_sub]![ID_livre]));

Livre_sub is sub2 ID_livre is the field value

Answer 1

The query object has to reference through main form and 2 subform containers. Something like:

mainformname.subformcontainername.Form.subformcontainername!fieldname

Don't use dynamic parameterized query. Use WHERE argument of OpenForm method.

DoCmd.OpenForm "formname", , , "ID_livre=" & Me.ID_livre

Answer 2

通用语法是：

[Forms]![NameOfMainForm]![NameOfSubform1CONTROL].[Form]![NameOfSubform2CONTROL].[Form]![NameOfControl]