Passing values bewteen user controls is separate web forms

[campwes]

Hi! I have what I hope is a simple problem. I have 2 web forms. The
first form is a welcome page with a textbox and button (in a user
control). What's supposed to happen is that a user will enter data in
the textbox and click the button. The event handler for the button
then has to send that value to a the second web form containing a user
control that can accept that value as a parameter in a db query and
display the user control with the results of the query. I can set the
value of the query in the user control and display the page on its own,
but how do I get the textbox value from another form? I'll happily
supply code if my description isn't clear.

Thanks,

campwes

[Rykie]

Hi,

I guess you are a newby, because this is normally the first question
every newby asks, and your next question will be on how to do a databse
query, so here we go....

if you have a textbox called NameTextBox, then on the button click
event you can use one of many options to pass the value to the next
page, but I will use the session state to do this, so here is how to:
on the click event do the following: Session("userNa me") =
NameTextBox.Tex t, this will put the value of the textbox into the
session state object, more specifically it will link it to the
"userName" variable in the session state, just think of the session
state as one big hashtable. Now on any page in the project you can
refer to this value by simply doing this: Dim _UserName as String =
cstr(Session("u serName")), this will retrieve the whatever is held in
the userName variable in the session state object, cast it to string
and assign it to your variable.

Now for the SQL part press F1 and look under SqlCommand and you will
see good examples.

Rykie

[campwes]

Rykie,

Thank you for the suggestion. One thing I am not clear on is how the
value from the textbox1.Text field gets to the database query. When a
user enters a number in the text field and clicks the Send button from
the 1st user control, the 2nd user control must receive this number as
a parameter in a query ("...where question_number =" & qNum & "...) and
display its page data (2nd user control, UI, etc). Thanks again for
the help.

Regards,

campwes

[Rykie]

Campwes,

As I said before, look under SQLCommand on MSDN.

There are a number of ways you can do this, but the one I will do will
be in your first dropdownlist postback event I will do a databse query
and set the second ddl datasource there.

Ryk

[campwes]

Rykie,

I don't need to know how to do a database query. That's wasn't my
problem.

If there's anyone else reading this who wants the answer, here it is...

http://msdn2.microsoft.com/en-us/library/6c3yckfw.aspx