C# exe setup error

Hello team, I have found the solution on how to deploy the application, I went into the set up folder to upload Sqlserver file and it works for me. Thank you all for your help.

This is my code please

Data Source=(LocalDB)\v11.0;Integrated Security=SSPI;AttachDbFilename=|DataDirectory|AtteyNew.mdf;Integrated Security=True;
// Unit Class ConnectionString Code
public string MyConnection()
{
con = @"Data Source=(LocalDB)\v11.0;AttachDbFilename=|DataDirectory|\App_Data\AtteyNew.mdf; Initial Catalog=Attey;Integrated Security=True";
return con;
}