Dynamically created Datagrids data lost on Postback

[ree32]

I have a placeholder and depending on a user input(a drop downlist)
when the user clicks a button I dynamically create a number of
datagrids and fill them with data from a database. But the problem is
that on a postback I lose all the datagrids and their data.

I have looked at numerous pages on the net regarding this issue. Many
say you have to rebuild build the controls on postback. How am I meant
to do this in my situation as I don't even know the number of
datagrids that are going to be built. I also don't want to access the
database and retrieve the data on every single postback.

Is there some way to load the datagrids back?

 

[Guest]

If you build the datagrid dynamically, then you bear the burden of
re-creating the datagrid on a postback. If you do no want to "re-retrieve"
the data from the database, then you can store off the DataTable into a
ViewState variable then on post-back, retrive the datatable from the
Viewstate (eg. MyDataTable = (DataTable) ViewState("MyTable") (C# code
example).

I hope this helps..