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Hi Saurabh
You can show your entry records on top on daily basis by using the concept of date, i mean to say that when you are trying to show the records, use order by <datefield> desc clause in your select query.
For question 2 refer this link
http://www.c-sharpcorner.com/UploadFile/satyapriyanayak/how-to-save-image-along-with-details-into-database-in-asp-ne/
Hope this will help you.