Import MEF components from non-MEF exported classes

ImportMefComponent.cs

using System.ComponentModel.Composition;
using Microsoft.VisualStudio.Shell;
using Microsoft.VisualStudio.Shell.TableManager;

public class ExtensionPackage : Package
{
    [Import]
    private ITableManagerProvider _tableManagerProvider;

    protected override void Initialize()
    {
        base.Initialize();
        this.SatisfyImportsOnce(); // This calls the extension method

        ITableManager errorsTable = _tableManagerProvider.GetTableManager(StandardTables.ErrorsTable);
    }
}

SatisfyImportExtensionMethod.cs

using System.ComponentModel.Composition;
using Microsoft.VisualStudio.ComponentModelHost;
using Microsoft.VisualStudio.Shell;

public static class MefExtensions
{
    private static IComponentModel _compositionService;

    public static void SatisfyImportsOnce(this object o)
    {
        if (_compositionService == null)
        {
            _compositionService = ServiceProvider.GlobalProvider.GetService(typeof(SComponentModel)) as IComponentModel;
        }

        if (_compositionService != null)
        {
            _compositionService.DefaultCompositionService.SatisfyImportsOnce(o);
        }
    }
}