<Window x:Class="Window1" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" Title="UseExpander" Height="300" Width="300"> <Grid> <StackPanel Name="StackPanel1" Margin="0,0,0,0"> <Expander Header="Name" Margin="0,0,0,0" Name="Expander1" IsExpanded="True"> <StackPanel Margin="20,0,0,0"> <StackPanel Height="Auto" Width="Auto" Orientation="Horizontal"> <Label Height="25.96" Width="84">First Name</Label> <TextBox Height="25" Width="147" /> </StackPanel> <StackPanel Height="Auto" Width="Auto" Orientation="Horizontal"> <Label Height="25.96" Width="84">Last Name</Label> <TextBox Height="25" Width="147" /> </StackPanel> </StackPanel> </Expander> <Separator /> <Expander Header="Address" Margin="0,0,0,0" IsExpanded="True"> <StackPanel Margin="20,0,0,0" > <StackPanel Height="Auto" Width="Auto" Orientation="Horizontal"> <Label Height="25.96" Width="84">Street</Label> <TextBox Height="25" Width="147" /> </StackPanel> <StackPanel Height="Auto" Width="Auto" Orientation="Horizontal"> <Label Height="25.96" Width="84">City</Label> <TextBox Height="25" Width="147" /> </StackPanel> <StackPanel Height="Auto" Width="Auto" Orientation="Horizontal"> <Label Height="25.96" Width="84">State</Label> <TextBox Height="25" Width="147" /> </StackPanel> <StackPanel Height="Auto" Width="Auto" Orientation="Horizontal"> <Label Height="25.96" Width="84">Zip</Label> <TextBox Height="25" Width="147" /> </StackPanel> </StackPanel> </Expander> <Separator /> </StackPanel> </Grid> </Window>