datagridview doesn´t show the datasource

[tommylej]

i´m trying to bind a list to a datagridview. i do that:

public void seedatagrid(List<myClass> liste2)
{
    dgv_TraceItems.DataSource = new BindingList<myClass>(liste2.ToList());
}

and the datagridview has the data, how is in the picture, but it doesn´t show anything.

could you help me?? how can i resolve the problem?? thank you
data.jpg

the class

public enum TYPE
{
    normal= 1,
    especial= 3, 
    low= 6, 
    high= 7,          
}


public class myClass : INotifyPropertyChanged
{

    private byte number;
    private TYPE type;
    private string file;
    private bool isselected;

    public event PropertyChangedEventHandler PropertyChanged;

    public byte Number
    {
        get
        {
            return this.number;
        }
        set
        {
            this.number= value;
            this.OnPropertyChanged("Number");
        }
    }

    public TYPE Type
    {
        get
        {
            return this.type;
        }
        set
        {
            this.type = value;
            this.OnPropertyChanged("Type");
        }
    }

    public string File
    {
        get
        {
            return this.file;
        }
        set
        {
            this.file = value;
            this.OnPropertyChanged("File");
        }
    }

    public bool IsSelected
    {
        get
        {
            return this.isselected;
        }
        set
        {
            this.isselected = value;
            this.OnPropertyChanged("IsSelected");
        }
    }

    public myClass(UInt32 Data, string Text)
    {            
        this.number = (byte)((Data & 0x0000FF00) >> 8);
        this.type = (TYPE)((Data & 0x00FF0000) >> 16);
        this.file = Text;

    }

    private void OnPropertyChanged(string propertyName)
    {
        if (this.PropertyChanged != null)
        {
            this.PropertyChanged(this, new PropertyChangedEventArgs(propertyName));
        }
    }