windows phone 7, can't bind an image to stackpanel properly - xaml

Question

Binded image refuses to be displayed. Could anyone give some hints?
This is XAML:
<ListBox Name="TransactionList" Margin="0,0,0,78">
<ListBox.ItemTemplate>
<DataTemplate>
<Button Width="460" Height="100">
<Button.Content>
<StackPanel Orientation="Horizontal" Height="80" Width="400">
<Image Source="{Binding Pic}" Margin="2" Width="80" Height="80" Stretch="Fill" Style="{Binding}" />
<StackPanel Orientation="Vertical" Height="40">
<StackPanel Orientation="Horizontal" Height="40">
<TextBlock Width="100" FontSize="22" Text="{Binding Name}" Height="40" Style="{Binding}" />
<TextBlock Width="200" FontSize="22" Text="{Binding Surname}" Height="40"/>
</StackPanel>
<StackPanel Orientation="Horizontal" Height="40">
<TextBlock Width="200" FontSize="22" Text="{Binding Number}" Height="40" Style="{Binding}" />
</StackPanel>
</StackPanel>
</StackPanel>
</Button.Content>
</Button>
</DataTemplate>
</ListBox.ItemTemplate>
</ListBox>
This is how it should look like
And this what I got
Image and Number are not displayed...
Here's the MainPage structure:
public MainPage()
{
InitializeComponent();
Loaded += new RoutedEventHandler(MainPage_Loaded);
}
void MainPage_Loaded(object sender, RoutedEventArgs e)
{
List<Transaction> transactionList = new List<Transaction>();
transactionList.Add(new Transaction("John", "Smith", "[phone]", 1)); //'1' stands for Gender
TransactionList.ItemsSource = transactionList;
}
And a Transaction class:
public class Transaction
{
public string Name { get; set; }
public string Surname { get; set; }
public string Number { get; set; }
public int Gender { get; set; }
public string Pic { get; set; }
public Transaction(String Name, String Surname, String Number, int Gender)
{
this.Name = Name;
this.Surname = Surname;
this.Number = Number;
this.Gender = Gender;
switch (Gender)
{
case 0:
this.Pic = "Images/man.png";
break;
case 1:
this.Pic = "Images/woman.png";
break;
default:
this.Pic = "Images/unknown.png";
break;
}
}
}

Answer 1

The Pic property should be the type of URI not string
public Uri Pic { get; set; }
and
public Transaction(String Name, String Surname, String Number, int Gender)
{
this.Name = Name;
this.Surname = Surname;
this.Number = Number;
this.Gender = Gender;
switch (Gender)
{
case 0:
this.Pic = new Uri("Images/man.png", UriKind.Relative);
break;
case 1:
this.Pic = new Uri("Images/woman.png", UriKind.Relative);
break;
default:
this.Pic = new Uri("Images/unknown.png", UriKind.Relative);
break;
}
}
xaml
<Image Margin="2" Width="80" Height="80" Stretch="Fill" Style="{Binding}" >
<Image.Source>
<BitmapImage UriSource="{Binding Pic}" />
</Image.Source>
</Image>