Problem in Performance of Add-on

Hi all,

I have made a program for Payroll in Vb.net where i need to upload the attendance of 5000 employees through an excel sheet.

That is, 5000 employees * 30 days so there will be a line item of 150000 in the excel sheet.

My issue here is,

It takes very long time to get upload into my system, the performance of my add-on is very worst.

How to resolve this issue???

Help me solving this issue friends.

Regards,

Janani