ExecuteScalarAsync() [2/2]

virtual Task< object?> System.Data.Common.DbCommand.ExecuteScalarAsync ( CancellationToken cancellationToken )

inlinevirtual

Definition at line 234 of file DbCommand.cs.

    {
        if (cancellationToken.IsCancellationRequested)
        {
            return ADP.CreatedTaskWithCancellation<object>();
        }
        CancellationTokenRegistration cancellationTokenRegistration = default(CancellationTokenRegistration);
        if (cancellationToken.CanBeCanceled)
        {
            cancellationTokenRegistration = cancellationToken.Register(delegate(object s)
            {
                ((DbCommand)s).CancelIgnoreFailure();
            }, this);
        }
        try
        {
            return Task.FromResult(ExecuteScalar());
        }
        catch (Exception exception)
        {
            return Task.FromException<object>(exception);
        }
        finally
        {
            cancellationTokenRegistration.Dispose();
        }
    }

References System.cancellationToken, System.Threading.CancellationTokenRegistration.Dispose(), System.exception, System.Data.Common.DbCommand.ExecuteScalar(), System.Threading.Tasks.Task< TResult >.FromException(), and System.s.