>Can somebody pls provide some Sample Code of Handling dbf files in network i.e. code to open files, write files, delete records etc. in network.

First, you have to SET EXCLUSIVE OFF.

Next, you could use explicit record locking, but the modern and recommended approach is that you use buffering. Enable buffering on your tables - usually option 3 or 5 (optimistic record locking, or optimistic table locking). Sample commands, in a Form.Load():

set exclusive off && this is required for shared access in a network
set deleted on && nothing to do with network,
               && but usually you would want to include this
* Open tables
use Table1 in 0 order Field1
...
* Buffering:
CursorSetProp("Buffering", 5, "Table1")
...

Now, the user can do changes. To undo the changes:

* Form.OnCancel() && method added by programmer
TableRevert()

And to save changes, your code might be similar to the following:

* Form.OnSave() && method added by programmer
select Table1
if not TableUpdate() && if TableUpdate() failed
  local laError(1)
  aerror(laError)
  MessageBox("Can't save the record, message #"  trans(laError(1);
    + " Message: " + laError(2))
endif

Buffering is recommended, even if you don't use your program in a network.