entity framework core database first update database after change model code example

Example 1: update models with ef core

Scaffold-DbContext "Server=myserver\mydb;Database=mydb;Trusted_Connection=True;" Microsoft.EntityFrameworkCore.SqlServer -OutputDir Models -t <table> -f

Example 2: how to update modal class using dbfirst in asp.net core

Additional Tip
If you are going to update the models from time to time, here's a convenient way to simplify the process.

Head over to menu Tools > External Tools, and then Add a new menu and fill in the following entries:

Title:

Update DbContext
Command:

dotnet.exe
Arguments:

ef dbcontext scaffold "your-connection-string" Microsoft.EntityFrameworkCore.SqlServer --output-dir=Models --force
Initial directory:

$(ProjectDir)
Then optionally tick "Use Output window", hit Apply and OK.

When you go to Tools again, this new menu should be there and ready for reuse, in just a click of a button!