Sometime it needs calling sub routine in MS Access VBA on another form or in same form to perform certain tasks on the current intended command execution as a pre-requisite of the process. There might also be needed to call a subroutine on the main from the sub-form. In addition to that calling the sub-routine from another sub-routine within the same form.
Procedure of calling sub routine in ms access:
Lets say the below sub routine reside in the “Main_Form” which will populate the CLASSES table from the STUDENTS table :
Public Sub Populate_Classes() Dim a as Integer a = 10; Dim db As Database Set db = CurrentDb Dim SQL As String Dim qdf As QueryDef SQL = "INSERT INTO CLASSES(id,name,dob,class,roll,updatetime)" & _ " SELECT sid, lname, sdob, sroll, format(Now(),'yyyy/mm/dd') FROM STUDENTS " Set qdf = db.CreateQueryDef("", SQL) qdf.Execute dbFailOnError End Sub
- Calling the Populate_Classes sub-routine form another sub-routine named as “Execute_First” in the same MS access form “Main_Form”:
Private Sub Execute_First() Call Populate_Classes End Sub
- Calling the Populate_Classes sub-routine form another sub-routine named as “Calling_From_Another_Form” from another MS access form:
Private Sub Calling_From_Another_Form() Forms!Main_Form.Populate_Classes End Sub
- If the MS Access application is using the Navigation Form:
- In the Navigation form the “Navigation Button” command calling a form to be loaded on the “NavigationSubform” container. Hence the original form is retaining the Sub-routine but as the “NavigationSubform” is representing the thing so instead of mentioning the original form we mention the “NavigationSubform” in the code.
- For example, if Populate_Classes is retaining in the “Class” form under navigation button; we will not call as “Forms![Navigation]![Class].Form.Populate_Classes “ rather we will call as below:
Private Sub Calling_From_Another_Form() Forms![Navigation]![NavigationSubform].Form.Populate_Classes End Sub