I have class

//Create GroupFieldArgs as an EventArgs
    public class GroupFieldArgs : EventArgs
    {
        private string groupName = string.Empty;
        private int aggregateValue = 0;
        //Get the fieldName
        public string GroupName
        {
            set { groupName = value; }
            get { return groupName; }
        }
        //Get the aggregate value
        public int AggregateValue
        {
            set { aggregateValue = value; }
            get { return aggregateValue; }
        }
    }

I have another class that creates a event handler

public class Groupby
{
 public event EventHandler eh;
}

Finally I have Timer on my form that has Timer_TICK event. I want to pass GroupFieldArgs in Timer_TICK event. What is the best way to do it?