C#

using PowerPoint = Microsoft.Office.Interop.PowerPoint;
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PowerPoint.Application pptApp;
PowerPoint.Presentations oPresentations;
PowerPoint.Presentation oPresentation;
string sPath = @"C:\sample.avi"; // Dummy path for this example

pptApp = new PowerPoint.Application();
pptApp.Visible = MCore.MsoTriState.msoTrue;
oPresentations = pptApp.Presentations;

oPresentation = oPresentations.Add(MCore.MsoTriState.msoTrue); 

PowerPoint.Slide slide = oPresentation.Slides.AddSlide(oPresentation.Slides.Count, oPresentation.Slides[oPresentation.Slides.Count].CustomLayout); // 1. Add slide - works well

PowerPoint.Shape video = slide.Shapes.AddMediaObject2(sPath, MCore.MsoTriState.msoFalse, MCore.MsoTriState.msoTrue, 0f, 0f, -1f, -1f);  // 2. Add video from external file - works well

/* 3. Trying to set Start Automatically for video - but not producing expected result*/
video.AnimationSettings.PlaySettings.PlayOnEntry = MCore.MsoTriState.msoTrue; 

/* Clueless for how to set a video to Full Screen while slide show is running */

Ex: let’s I have a Combo-box control in my Win-Form project and that has a list of city stored in database, now user A and User B are working on the same form. If user A adds a new city in the database how can User B’s combo-box take that change into consideration and update itself automatically?

public interface IInstrumentService
{
    void Start();

    void Stop();

    void UpdateStatus(ServiceStatusModel status);
}

public class TestClass1 : IInstrumentService
{
    public void Start()
    {
    }

    public void Stop()
    {
    }

    public void UpdateStatus(ServiceStatusModel status)
    {
    }
}

private void GetServicesToLoadServices()
{
    string[] files = Directory.GetFiles(_servicesLocation, "*.dll");
    foreach (string file in files)
    {
        Assembly assembly = Assembly.LoadFrom(file);
        foreach (Type type in assembly.GetTypes())     //< == Type is "TestClass1" 
        {
            bool isImplementing1 = type.IsAssignableFrom(typeof(IInstrumentService));       //< ==  ALWAYS FALSE
            bool isImplementing2 = typeof(IInstrumentService).IsAssignableFrom(type);       //< ==  ALWAYS FALSE
        }
    }
}