WPF

    <ListBox    Name="listBox"
          BorderThickness="0"
->        HorizontalAlignment="Stretch"
->        HorizontalContentAlignment="Stretch"
->        ScrollViewer.HorizontalScrollBarVisibility="Disabled"
          SelectionMode="Extended">
      <ListBox.ItemsPanel>
        <ItemsPanelTemplate>
          <WrapPanel Name="wrapPanel"
                        MinHeight="17"
->                      HorizontalAlignment="Stretch"
                        Background="Blue"
                        IsItemsHost="True"
                        Orientation="Horizontal"
                        ></WrapPanel>
        </ItemsPanelTemplate>
      </ListBox.ItemsPanel>
    </ListBox>

<Grid.COlumndefinitions>
<ColumnDefinition Width="*"/>
</Grid.ColumnDefinitions>

hb52134214 wrote:

If the list box is inside a grid, a grid will default to resize with its container, but the columns may not? In the grid set the column width to '*':

<Grid.ColumnDefinitions>
    <ColumnDefinition Width="100"></ColumnDefinition>
    <ColumnDefinition Width="65"></ColumnDefinition>
    <ColumnDefinition Width="*"></ColumnDefinition>
</Grid.ColumnDefinitions>

<window>
  <grid>
    <grid>
       <userControl>
         <ScrollViewer>
           <listbox>

<ListBox 
    ScrollViewer.VerticalScrollBarVisibility="Auto"
    ScrollViewer.HorizontalScrollBarVisibilty="Hidden"/>

hb52134214 wrote:

Why do you have the list box in the scroll viewer?

ScrollViewer.VerticalScrollBarVisibility="Auto"   
ScrollViewer.HorizontalScrollBarVisibilty="Hidden"

<UserControl x:Class="CustomControls.EmailAddressesListBox"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    Loaded="UserControl_Loaded"
    >
    <Border
        BorderThickness="2"
        BorderBrush="DarkBlue"
        CornerRadius="3"
        >
        <ListBox
            MaxHeight="68"
            BorderThickness="0" 
            SelectionMode="Extended"
            KeyUp="listBox_KeyUp"
            SelectionChanged="listBox_SelectionChanged"
            >
            <ListBox.ItemsPanel>
                <ItemsPanelTemplate>
                    <WrapPanel
                        MinHeight="17"
                        Width="{Binding ActualWidth,
                                        RelativeSource=
                                            {RelativeSource AncestorType={x:Type ScrollContentPresenter}}}"
                        Orientation="Horizontal"
                        >
                    </WrapPanel>
                </ItemsPanelTemplate>
            </ListBox.ItemsPanel>
        </ListBox>
    </Border>
</UserControl>

<WrapPanel
    Name="wrapPanel"
    MinHeight="17"
    Width="{Binding ActualWidth,
                    RelativeSource=
                        {RelativeSource AncestorType={x:Type ScrollContentPresenter}}}"
    IsItemsHost="True"
    Orientation="Horizontal"
    HorizontalAlignment="Left"
    />

Gideon Engelberth wrote:

If you do leave this as a UserControl, you should take out the explicit ScrollViewer since the ListBox will create a ScrollViewer internally if needed.

Michael Eber wrote:

I'm back in debug state

Tauseef A wrote:

is isolated storage in silverlight is permanent ?

Mark Salsbery
Microsoft MVP - Visual C++

Tauseef A wrote:

because once i restart my system all the files which i created in my isolated storage are deleted
and also if i close my visual studio and reopen it than it also removes all the
previously created files

private void CheckBox_Checked(object sender, RoutedEventArgs e)
{
    myListBox.SelectedItem = (sender as CheckBox).DataContext;
}

private void CheckBox_Unchecked(object sender, RoutedEventArgs e)
{
    myListBox.SelectedItem = (sender as CheckBox).DataContext;
}

Mark Salsbery
Microsoft MVP - Visual C++