Wpf adding stack panels from view - wpf

Question

I'm not sure my title is clear (poor wpf skills).
What i'm trying to do is to create a smart data entry form. My goal is to have a hard coded data that the user should enter, and on demand (a plus button) he can enter another set of data, every time the user will click the plus button another set will appear in the window (endless)
Edit:
For more details, for a very simple example of what i'm trying to achieve, lets say that this is the window:
And after the user will click the plus button the window will look like this:
And the plus button will always let the user adding more peoples.

Answer 1

Seems like all you need is a List and a ItemControl:
Your Model:
public class User
{
public String Name { get; set; }
public int Age { get; set; }
}
In your ViewModel:
public List<User> Users { get; set; }
//In your constructor
Users = new List<User>();
In your View:
<ItemsControl ItemsSource={Binding Users}>
<ItemsControl.ItemTemplate>
<DataTemplate>
<StackPanel>
<StackPanel Orientation="Horizontal" Margin="10">
<TextBlock Text="Name:" />
<TextBox Text="{Binding Name}" />
</StackPanel>
<StackPanel Orientation="Horizontal" Margin="10">
<TextBlock Text="Age:" />
<TextBox Text="{Binding Age}" />
</StackPanel>
</StackPanel>
</DataTemplate>
</ItemsControl.ItemTemplate>
</ItemsControl>
And then below this wire up your add button to a command to point to a method that would do someething like:
private void AddUser()
{
Users.Add(new User());
NotifyPropertyChange("Users");
}

Answer 2

Use an ItemsControl with its ItemsSource property bound to a ReadOnlyObservableCollection<Person>, where Person is a class holding the name and age as strings.
(1) Create Person
public class Person
{
public string Name { get; set; }
public int Age { get; set; }
}
(2) Create PeopleViewModel, holding your collection.
public class PeopleViewModel
{
private ObservableCollection<Person> _people;
public ReadOnlyObservableCollection<Person> People { get; private set; }
public PeopleViewModel()
{
_people = new ObservableCollection<Person>();
People = new ReadOnlyObservableCollection<Person>(_people);
addPerson(); // adding the 1st person
}
// You also need to hook this up to the button press somehow
private void addPerson()
{
_people.Add(new Person());
}
}
(3) Set the DataContext of your window to be a PersonViewModel in the code-behind
public partial class MainWindow : Window
{
public MainWindow()
{
InitializeComponent();
DataContext = new PeopleViewModel();
}
}
(4) Create an ItemsControl along with a DataTemplate for Person
<ItemsControl ItemsSource="{Binding People}">
<ItemsControl.ItemTemplate>
<DataTemplate>
<StackPanel>
<StackPanel Orientation="Horizontal">
<TextBlock Text="name:" />
<TextBox Text="{Binding Name}" />
</StackPanel>
<StackPanel Orientation="Horizontal">
<TextBlock Text="age:" />
<TextBox Text="{Binding Age}" />
</StackPanel>
</StackPanel>
</DataTemplate>
</ItemsControl.ItemTemplate>
</ItemsControl>
Don't forget to hook up your button either through a Command or through the Button.Click event.