Forms :: Binding Combobox To Generic List?

What I would like to do is bind a combobox to my own object which is as follows:

Public Class Categories
Public Sub New(ByVal myConn As SqlConnection)
Dim myConnection As SqlConnection = myConn
myConnection.Open()

[code]....

(I have put breakpoints and I know this object has data.)So on my form how do I bind my combobox to this object? The code I have is below:

Dim bs As New BindingSource
bs.DataSource = New Inventory.Categories(myconn)
cboCategory.DataSource = bs
cboCategory.DisplayMember = "Description"
cboCategory.ValueMember = "CategoryID"

but it returns the following error: Cannot bind to the new display member. Parameter name: newDisplayMember