how to connect database to asp.net form

i want to connect to my local database but it doesn't responding means some thing is going wrong.
please advised me for the syntax of as i wrote the below code.
<connectionstrings>
<add name="connect" connectionString="Data Source=DESKTOP-L6ABJBC;Initial Catalog=LoginDB1;Integrated Security=SSPI;AttachDBFilename=|DataDirectory|\aspnet-WebSite3-20170707151050.mdf"/>