Public Class RuleSetDialog _
    Inherits Form

Dim instance As RuleSetDialog

public class RuleSetDialog : Form

public ref class RuleSetDialog : public Form

public class RuleSetDialog extends Form

    RuleSet ruleSet = null;        // no rule set to start with
    using (RuleSetDialog dialog = new RuleSetDialog(typeof(TestClass), null, ruleSet))
    {
        if (dialog.ShowDialog() == System.Windows.Forms.DialogResult.OK)
        {
            ruleSet = dialog.RuleSet;
            RuleValidation validation = new RuleValidation(typeof(TestClass), null);
            RuleEngine engine = new RuleEngine(ruleSet, validation);
            TestClass testObject = new TestClass();
            engine.Execute(testObject);
        }
    }