Read dat file in winforms applications

Question

Hi,
I am working on winform applications

using (FileStream fs = new FileStream(path, FileMode.Open, FileAccess.Read, FileShare.ReadWrite))
{
.....
}

am writing above code to Read DAT file but some times I am getting following exception

"The process cannot access the file 'C:\data\myfile.dat' because it is being used by another process."

Can you tel me how to solve this problem ?

Answer 1

select empid,

(select min(attandancedate) from tbl_test where empid=a1.empid and (cast(attandancedate as time) between '08:00:00' and '09:59:59')) as intime,

(select max(attandancedate) from tbl_test where empid=a1.empid and (cast(attandancedate as time) >= '17:00:00')) as outtime

from tbl_test a1 group by a1.empid

 

 

But This Query Gives Null For Emp1 As Outtime Because He Does Not Punched After 5 PM

 

For Ideal Case We Can Remove Time from second query because we can get last punch of any employee using max, that can be use as outtime

 

Please Tell If This Is Usefull. 

 

 

 

Answer 2

select empid, min(attendencedate) as inTime, max(attendencedate) as outTime

from temp

group by empid;