Hello Group
I'm having a bit of trouble figuring this out. I'm grateful for any
hints.
Let's assume I'm have a webapplication with two .aspx pages, Page A
and Page B.
Page A consists of a textbox (textbox1) and a HTML Button control.
Page B consists of a datagrid control.
When the button on Page A is clicked, Page B is opened in a new
browser window
displaying a list of values. (Page A stays open in the background)
When I select one of the values in Page B, I would like that the
textbox on Page A displays the value I selected.
It works if I save the value from Page B in a Session and then put a
server control button on Page A which updates the textbox once
clicked.
But how can I update the textbox directly from Page B? E.g. when
clicking on the datagrid run code like this:
Dim PageA as Page
PageA.textbox1.text = datagridvalue
It comes back as 'An object reference is not set to an instance of
this object.'
I've tried
PageA = CType(Context.Handler, PageA)
PageA.textbox1.text = datagridvalue
but I think it fails because Page B has been opened in a new browser
instance and was not called with the Server.Transfer method.
I also have made textbox1 Public to see whether that helps.
Please let me know whether it is possible to refer to textbox1 of Page
A in the background from Page B. If I save the value in a session and
switch to Page A and update the textbox with the session value it
works so there must be a way to do this directly on Page B??
One more theorie I have why it fails is that Page A has alredy been
rendered. But in this case I still could store the datagrid value in a
session and then have a script to refresh Page A with a statement in
the Page_Load event that assigns the session value to textbox1 if it's
not empty. Any hints how I can force Page A to reload from Page B?
Thanks for your efforts!
Martin
