Using Dropdown Lists and Postback VB .net

[stinger5900]

I have 4 ddlist's. ddlist a, b,c,d.

list a selects a database in a file
list b selects a table
list c selects a date in the table
and d selects a second value in the table

I would like ddlist a to post back and update ddlist c and ddlist d
I have ddlist b doing just that, but ddlist a will not it will post pack and reload the page however c and d will not update unless I change ddlist b

I am using vb code .net asp 2.0 and Access data base objects.
Is there a way to force ddlist c and d to refresh when ddlist a selected index is changed.

[harshmaul]

Hi,
Set the autopostback property to all of the DDLists as true,

then on the DDL's selecteditemind exchanged event fill the next list.

I can give example code tomorow if you like.

[kunal pawar]

can u post ur code, and can u tell us u set property AutoPostback of drop down box to true

[stinger5900]

Yes the Auto post back is true. I think is has something to do with the fact that the access data object is linked between ddlist b, c, and d. What i mean is in the SQL statement ddlist C get a value from b and ddlist d has an SQL statement that gets a value from ddlist c, however ddlist A sets the datafile property of the two access objects.

below is where ddlist a text is getting the used as "DatabaseRecord "
Dates.DataFile = Profile.DataBas eLocation & Session("Databa seRecord") & ".mdb"

info.DataFile = Profile.DataBas eLocation & Session("Databa seRecord") & ".mdb"

Where the SQL statement is
select * from table where ddlist c value is like date and ddlist d value is like data.

Is there a way to force the drop down list to data bind?