C# WinForm Bind DataGridView with a List and display checkbox for Boolean field

After some considerable searching I havent been able to find a solution to this issue. I have successfully set the datasource of a DatagridView using a list as follows.

The class

public class ChannelInfo
    {
        [Browsable(false)]
        [DisplayName("ChannelId")]
        public int channelId { get; set; }
        [DisplayName("Channel")]
        public string sysName { get; set; }
        [DisplayName("Display Name")]
        public string dispName { get; set; }
        [DisplayName("Unit")]
        public string unit { get; set; }
        [DisplayName("Divide By")]
        public int divideBy { get; set; }
        [DisplayName("YAxis")]
        public string yAxis { get; set; }
        [DisplayName("Min Scale")]
        public int scaleMin { get; set; }
        [DisplayName("Max Scale")]
        public int scaleMax { get; set; }
        [DisplayName("Colour")]
        public string colour { get; set; }
        [DisplayName("Set Point")]
        public double setPoint { get; set; }
        [DisplayName("Limit(+/-)")]
        public double? limit { get; set; }
        [DisplayName("MKT")]
        public bool? IncludeInMKT { get; set; }
        /// <summary>
        /// Default constructor
        /// </summary>
        public ChannelInfo()
        {

        }

        /// <summary>
        /// Copy constructor to create a copy of another object
        /// </summary>
        /// <param name="ci"> and object of the type ChannelInfo whos copy is to be created</param>
        public ChannelInfo(ChannelInfo ci)
        {
            channelId = ci.channelId;
            sysName = ci.sysName;
            dispName = ci.dispName;
            unit = ci.unit;
            divideBy = ci.divideBy;
            yAxis = ci.yAxis;
            scaleMin = ci.scaleMin;
            scaleMax = ci.scaleMax;
            colour = ci.colour;
            setPoint = ci.setPoint;
            limit = ci.limit;
            IncludeInMKT = ci.IncludeInMKT;
        }
    }

setting the data-source of the grid

static List<ChannelInfo> chInfoList;
dgvChannels.DataSource = chInfoList;

The type of the final column of the data-grid is set to DataGridViewCheckBoxColumn using the designer. The data-grid displays all the data fine except the last boolean field IncludeInMkt. It shows the text values (True/False) whereas, I expect it to be shown as a check box with the corresponding values in the chInfoList. I have also set the TrueValue to True and FalseValue to False in the designer.

Where am I going wrong, kindly suggest.