the following codes show how to create dynamic
check boxes according to database data.also the
tricky part is that whether a check box will
be checked or not can be done by the code '$checked'.

this post shows how to populate dropdown list from
dataset.it's done by the following generic method-

From many years software makers or developers
facing problems on how to make data to both
outside and inside of the system maintaining
security

jquery dialog is not only best for showing only content but
also can be used to show form,buttons for postback.......
but for this jquery dialog must be appended to form as -

following way a DataTable with data can be used to
populate gridview control in asp.net.following codes get files list
from a file path and adds in DataTable then sets that
DataTable as a DataSource of the GridView grdDirList.