Question

i have a listbox and i am trying to make the scrolling work without having to set the height, is this possible? Thanks. Below is the code. The scrolling does not work.

 <ListBox Name="EmployeeListBox" Background="Transparent"  
                             SelectionMode="Single"
                             ItemsSource="{Binding Employees, Mode=TwoWay}"  >
        <ListBox.ItemTemplate>
            <DataTemplate >
                <StackPanel>
                    <Grid>
                        <Grid.ColumnDefinitions>
                            <ColumnDefinition Width="120" />
                            <ColumnDefinition Width="140" />
                        </Grid.ColumnDefinitions>
                        <Grid.RowDefinitions>
                            <RowDefinition Height="Auto"/>
                            <RowDefinition Height="Auto"/>
                        </Grid.RowDefinitions>
                        <TextBlock  Grid.Column="0" Grid.Row="0" FontWeight="Bold" Text="Name:" />
                        <TextBlock x:Name="TextBlock1"  Grid.Column="1" Grid.Row="0"  
                                       Text="{Binding Name}" />
                    </Grid>
                </StackPanel>
            </DataTemplate>
        </ListBox.ItemTemplate>
    </ListBox>

and viewmodel:

 public class EmployeeDataContext
{
    public List<Employee> Employees { get; set; }
    public EmployeeDataContext()
    {
        GetEmployeeList();
    }
    private void GetEmployeeList()
    {
        Employees = new List<Employee>();
        for (int i = 0; i < 100; ++i)
        {
            Employees.Add(new Employee() { Name = "Gema Arterton" });
        }
    }
}
public class Employee
{
    public string Name { get; set; }
}

Answer 1

(sorry for my bad english)

It depends too on what control is the listbox inside. If your listbox is inside a Grid, it should take all the space of that grid – if it is inside a stackpanel it will use the least amount os space possible so you will have to use fixed height/width. Try this:

<UserControl...>
    <Grid>
      <ListBox HorizontalAlignment="Stretch" VerticalAlignment="Stretch">         
      </ListBox>
    </Grid>
</UserControl/>

The listbox should use all screen size and show vertical scrollbars if there is enough items.