HostingAbstractionsHostBuilderExtensions.StartAsync Method
Definition
Important
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Builds and starts the host.
public static System.Threading.Tasks.Task<Microsoft.Extensions.Hosting.IHost> StartAsync (this Microsoft.Extensions.Hosting.IHostBuilder hostBuilder, System.Threading.CancellationToken cancellationToken = default);static member StartAsync : Microsoft.Extensions.Hosting.IHostBuilder * System.Threading.CancellationToken -> System.Threading.Tasks.Task<Microsoft.Extensions.Hosting.IHost><Extension()>
Public Function StartAsync (hostBuilder As IHostBuilder, Optional cancellationToken As CancellationToken = Nothing) As Task(Of IHost)Parameters
- hostBuilder
- IHostBuilder
The IHostBuilder to start.
- cancellationToken
- CancellationToken
A CancellationToken that can be used to cancel the start.
Returns
The started IHost.
Exceptions
The cancellation token was canceled. This exception is stored into the returned task.
Remarks
This method stores in the task it returns all non-usage exceptions that the method's synchronous counterpart can throw. If an exception is stored into the returned task, that exception will be thrown when the task is awaited. Usage exceptions, such as ArgumentException, are still thrown synchronously. For the stored exceptions, see the exceptions thrown by Start(IHostBuilder).
