How can I Use Addrenge Entity how to install relevant DLL for Addrenge

Question

Hello members,

Hope you are doing good!!

can any one guide me on

How can I Use Addrenge Entity which is not exist inside my Entity framework how to install Dll for Addrenge , I just want to insert Bulk Data (1000 records) using excel sheet currently i am using Add method it takes 13 min for insertion of 1000 records ...