Use quartz.net in .net core 6.0 web api to implement scheduled tasks

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To use Quartz.NET in a .NET Core 6.0 Web API, you’ll need to first install the Quartz.NET package in your project. You can do this by adding the following line to your project’s .csproj file:

<PackageReference Include="Quartz" Version="3.0.7" />

Then, in the Startup class of your Web API, you’ll need to configure Quartz.NET by adding the following code to the ConfigureServices method:

services.AddQuartz(typeof(MyJob));

Where MyJob is the class that contains the code for the job you want to schedule.

You will also have to add Quartz.NET’s services to your container.

services.AddSingleton<IJobFactory, SingletonJobFactory>();
services.AddSingleton<ISchedulerFactory, StdSchedulerFactory>();

Once that’s done, you can schedule jobs in your Web API using the IScheduler interface, which you can inject into your controllers or other classes using the AddQuartz method in Startup.

You will also need to start the scheduler, you can do this by calling the Start method on the scheduler in the Configure method of the Startup class after you configure the services.

app.ApplicationServices.GetService<IScheduler>().Start();

You can also schedule jobs using the IJobDetail and ITrigger interfaces.

You should also keep in mind that Quartz is a library for scheduling jobs, it does not handle the job execution itself, for that you have to create a class that implements the IJob interface, this class is what you will pass to the AddJob method.