public abstract class JiraDbAction
    {
        public abstract void CollectData();

        public abstract event EventHandler OnDataAvaliable;

        public JiraDbAction(string connStr)
        {
            ConnString = connStr;
        }

        public string ConnString
        {
            get;
            private set;
        }
    }

    public class GetProjectsAction : JiraDbAction
    {
        private string _user;

        public GetProjectsAction(string connString, string user)
            : base(connString)
        {
            _user = user;
        }

        public override void CollectData()
        {
            using (jiradbEntities ctx = new jiradbEntities(ConnString))
            {
                Projects = ctx.projects.Where(x => x.LEAD == _user).ToList();
            }

            if (OnDataAvaliable != null)
                OnDataAvaliable.Invoke(this, EventArgs.Empty);
        }

        public override event EventHandler OnDataAvaliable;

        public List<project> Projects
        {
            get;
            set;
        }
    }

    public class JiraWrapper
    {
        private List<JiraDbAction> operations;
        private int _operationsFinished;

        public void AddOperation(JiraDbAction jiraDbAction)
        {
            if (operations == null) operations = new List<JiraDbAction>();

            operations.Add(jiraDbAction);
        }

        public void Execute()
        {
            _operationsFinished = 0;

            foreach (var operation in operations)
            {
                operation.OnDataAvaliable += new EventHandler(operation_OnDataAvaliable);

                Thread operationThread = new Thread(new ThreadStart(operation.CollectData));
                operationThread.Start();
            }
        }

        void operation_OnDataAvaliable(object sender, EventArgs e)
        {
            _operationsFinished++;

            if (_operationsFinished == operations.Count && OnDataAvaliable != null)
                OnDataAvaliable.Invoke(this, EventArgs.Empty);
        }

        public event EventHandler OnDataAvaliable;
     }

    [TestClass]
    public class JiraTest
    {
        public string cs = "metadata=res://*/JiraModel.csdl|res://*/JiraModel.ssdl|res://*/JiraModel.msl;provider=MySql.Data.MySqlClient;provider connection string=\"server=localhost;User Id=root;database=jiradb;password=root;Persist Security Info=True\"";

        [TestMethod]
        public void GetJiraProjects()
        {
            GetProjectsAction action1 = new GetProjectsAction(cs, "admin");
            //GetProjectsAction action2 = new GetProjectsAction(cs, "admin");


            JiraWrapper jiraWrapper = new JiraWrapper();

            jiraWrapper.OnDataAvaliable += new EventHandler(jiraWrapper_OnDataAvaliable);

            jiraWrapper.AddOperation(action1);
            //jiraWrapper.AddOperation(action2);

            jiraWrapper.Execute();
            
        }

        void jiraWrapper_OnDataAvaliable(object sender, EventArgs e)
        {
            
        }
    }