how to use CreateHostBuilder(args).Build(); in .NET 6

Question

I was using .NET 5 and I wrote this line of code in Startup.cs

var host= CreateHostBuilder(args).Build();
host.MigrateDatabase<Program>();
host.Run();

but now I don't know how should I use this in .NET 6 at Program.cs

Answer 1

.NET 6 has introduced the new minimal hosting model for ASP.NET Core apps. In short you can summarize the changes to the following:

var builder = WebApplication.CreateBuilder(args);

// Here goes code from Startup.ConfigureServices

var app = builder.Build();

// Here goes code from Startup.Configure

app.Run();

For more details check the:

• Migrate from ASP.NET Core 5.0 to 6.0 article
• Code samples migrated to the new minimal hosting model in ASP.NET Core 6.0 article
• ASP.NET Core 6 how to access Configuration during startup

Note that the "old" generic host model (ASP.NET Core version) still exists, works and can be used (actually some templates like worker one still use it).