once data is fetched into dataset connection gets closed. but in datareader
connection is always maintained...then why datareader is fast and mainly
recommended ?
When multiple users attempt to modify data at the same time
Ex user 1 is updating record at same time user2 deleted
record sucessfully.now user1 has press update button . how
to handle concurrency
explain connection less and with connection?diference
between data reader,data set,data adapter? can we use data
reader,data set in a single application? if yes explain
with simple code,if no explain?
i have two textboxes one for user name and another for
password . i have a table name compare(which contains
name,passwod etc.,)my doubt is how compare username
textbox with name column and how compare password textbox
with passwod column. i want the code
oledbdataadpter with ms access in c#.net giving exception
System.Data.OleDb.OleDbException while writing
adapter.update(dataset,"tabname"); how to update the
database from dataset?