Help!!!

I am trying to bind a Class Property Address::Street
to a text box and the program keeps generating
an exception.

Any Ideas?



//DEFINE class Address
public class Address {
public String Street, City, State, Zip;
public int Amount;

}

public class WinForm : System.Windows.Forms.Form
{
///

/// Required designer variable.
///

//Create Class Address property
private System.Windows.Forms.TextBox tbStreet;
public string Street;
.
.
.
private void InitializeComponent()
{
//Initialize Address object
this.tbStreet = new System.Windows.Forms.TextBox();
this.oAddress = new Address();


this.tbStreet.DataBindings.Add("Text", oAddress,"Street");