How to: Create a Binding in Code

http://msdn.microsoft.com/en-us/library/ms742863.aspx

public class MyData : INotifyPropertyChanged
{
    private string myDataProperty;

    public MyData() { }

    public MyData(DateTime dateTime)
    {
        myDataProperty = "Last bound time was " + dateTime.ToLongTimeString();
    }

    public String MyDataProperty
    {
        get { return myDataProperty; }
        set
        {
            myDataProperty = value;
            OnPropertyChanged("MyDataProperty");
        }
    }

    public event PropertyChangedEventHandler PropertyChanged;

    private void OnPropertyChanged(string info)
    {
        PropertyChangedEventHandler handler = PropertyChanged;
        if (handler != null)
        {
            handler(this, new PropertyChangedEventArgs(info));
        }
    }
}

//make a new source
  MyData myDataObject = new MyData(DateTime.Now);      
  Binding myBinding = new Binding("MyDataProperty");
  myBinding.Source = myDataObject;
  myText.SetBinding(TextBlock.TextProperty, myBinding);