Databinding to a Custom Control's Textbox

I have a custom control that comprises of a label and a textbox. I have
added the Design Time Properties for the designer to select the DataSource
and DataMember, those seem to work fine at Design Time. But at Run Time the
TextBox remains empty. How do I "Wire Up" the DataSource/Datamember so that
the data shows in the TextBox?

This is the portion of the code Im using to set the DataMember/Source
properties:

[Editor("System.Windows.Forms.Design.DataMemberListEditor,System.Design,
Version=2.0.0.0, Culture=neutral,PublicKeyToken=b03f5f7f11d50a3a",
typeof(System.Drawing.Design.UITypeEditor))]
public string DataMember
{
get
{
return m_DataMember;
}
set
{
m_DataMember = value;
}
}

[AttributeProvider(typeof(IListSource))]
public object DataSource
{
get
{
return m_DataSource;
}
set
{
m_DataSource = value;
}
}

Thank you for any help or tutorials on the subject!
Ron