How to Preserve Timestamp during file upload in Sharepoint

Hi Guys,

We are using Sharepoint 2013

I want to know how to preserve Timestamp when user upload file from local system to Sharepoint.

For Ex: A File is created on "1-april-2015" and the user is uploading on the date "20-april-2015". In the Sharepoint, The created date should be "1-april-2015" not the uploaded date of the file.

Tell me what are the possible way to achieve this? (ex : asp.net, etc)

Thanks in advance