Code:

namespace TSLab.DataSource
{
    /// <summary>
    /// Specifies the type of order 
    /// </summary>
    public enum OrderType
    {
        /// <summary>
        /// buy/sell by bar open price
        /// </summary>
        Market,
        /// <summary>
        /// buy/sell by bar close price
        /// </summary>
        Limit,
        /// <summary>
        /// buy/sell if price lesser or equals
        /// </summary>
        Fall,
        /// <summary>
        /// buy/sell if price greater or equals
        /// </summary>
        Growth
    }
}