public class ParameterAdapter : IParameter
{
	private string _name;
	private IEnumerable<object> _values;
	public ParameterAdapter(string name, IEnumerable< object> values)
	{
		_name = name;
		_values = values ?? throw new ArgumentNullException(nameof(values), "Values cannot be null.");
	}
	public string Name
	{
		get => _name;
		set => _name = value ?? throw new ArgumentNullException(nameof(value), "Name cannot be null.");
	}
	public IEnumerable<object> Values
	{
		get => _values;
		set => _values = value ?? throw new ArgumentNullException(nameof(value), "Values cannot be null.");
	}
}
// Handler for a UI control event, e.g., a button click
private void OnUpdateReportParametersClick(object sender, EventArgs e)
{
	// Assuming 'viewer' is an instance of the Viewer class
	// Assuming 'startDatePicker' and 'regionComboBox' are UI controls
	// Cast each element of the array to object
	var startDateParameter = new ParameterAdapter("StartDate", new[] { startDatePicker.Value }.Cast <object>());
	// For the region parameter, ensure that the selected item is treated as an object.
	// If regionComboBox.SelectedItem is not null, cast it to object; otherwise, handle the null case appropriately.
	var regionParameterValues = regionComboBox.SelectedItem != null ? new[] { regionComboBox.SelectedItem }.Cast<object>()
	                                                                        : Enumerable.Empty <object>();
	var regionParameter = new ParameterAdapter("Region", regionParameterValues);
	var parameters = new List<IParameter> { startDateParameter, regionParameter };
	// Dynamically update the report with new parameters
	viewer.SetParametersValues(parameters);
}