C#

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
        }
    }
}

MyCommand.Parameters.Add("@Mode", System.Data.SqlDbType.Text);
MyCommand.Parameters["@Mode"].Value = Convert.ToInt32(cbModePicker.SelectedItem.ToString());