Setting Sliding Panel size in WPF Navigation Drawer (SfNavigationDrawer)

The size of side pane can be adjusted using the DrawerHeight and DrawerWidth properties.

DrawerHeight

The DrawerHeight property is used to change the height of side pane when the Position is Top or Bottom.

<Window x:Class="NavigationDrawerWPF.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
        xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
        xmlns:syncfusion="http://schemas.syncfusion.com/wpf"
        xmlns:local="clr-namespace:NavigationDrawerWPF"
        mc:Ignorable="d"
        Title="MainWindow" Height="450" Width="800">
    <syncfusion:SfNavigationDrawer x:Name="navigationDrawer" 
                                   DrawerHeight="200" 
                                   Position="Top">
        <syncfusion:SfNavigationDrawer.DrawerHeaderView>
            <Grid Background="#31ade9">
                <Label Content="This is a very short content used to demonstrate the DrawerHeight property "/>
            </Grid>
        </syncfusion:SfNavigationDrawer.DrawerHeaderView>
    </syncfusion:SfNavigationDrawer>
</Window>
using Syncfusion.UI.Xaml.NavigationDrawer;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Media;

namespace NavigationDrawerWPF
{
    /// <summary>
    /// Interaction logic for MainWindow.xaml
    /// </summary>
    public partial class MainWindow : Window
    {
        public MainWindow()
        {
            InitializeComponent();
            SfNavigationDrawer navigationDrawer = new SfNavigationDrawer()
            {
                DrawerHeight = 200,
                Position = Position.Top
            };

            Grid grid = new Grid()
            {
                Background = new SolidColorBrush((Color)ColorConverter.ConvertFromString("#31ade9"))
            };

            Label label = new Label()
            {
                Content = "This is a very short content used to demonstrate the DrawerHeight property "
            };

            grid.Children.Add(label);
            navigationDrawer.DrawerHeaderView = grid;

            this.Content = navigationDrawer;
        }
    }
}

DrawerWidth

The DrawerWidth property is used to change the width of side pane when the Position is Left or Right.

<Window x:Class="NavigationDrawerWPF.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
        xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
        xmlns:syncfusion="http://schemas.syncfusion.com/wpf"
        xmlns:local="clr-namespace:NavigationDrawerWPF"
        mc:Ignorable="d"
        Title="MainWindow" Height="450" Width="800">
    <syncfusion:SfNavigationDrawer x:Name="navigationDrawer" 
                                   DrawerWidth="200" 
                                   Position="Left">
        <syncfusion:SfNavigationDrawer.DrawerHeaderView>
            <Grid Background="#31ade9">
                <TextBlock Text="This is a very short content used to demonstrate the DrawerHeight property "
                           TextWrapping="Wrap"/>
            </Grid>
        </syncfusion:SfNavigationDrawer.DrawerHeaderView>
    </syncfusion:SfNavigationDrawer>
</Window>
using Syncfusion.UI.Xaml.NavigationDrawer;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Media;

namespace NavigationDrawerWPF
{
    /// <summary>
    /// Interaction logic for MainWindow.xaml
    /// </summary>
    public partial class MainWindow : Window
    {
        public MainWindow()
        {
            InitializeComponent();
            SfNavigationDrawer navigationDrawer = new SfNavigationDrawer()
            {
                DrawerWidth = 200,
                Position = Position.Left,
                IsOpen = true
            };

            Grid grid = new Grid()
            {
                Background = new SolidColorBrush((Color)ColorConverter.ConvertFromString("#31ade9"))
            };

            TextBlock label = new TextBlock()
            {
                Text = "This is a very short content used to demonstrate the DrawerHeight property",
                TextWrapping = TextWrapping.Wrap
            };

            grid.Children.Add(label);
            navigationDrawer.DrawerHeaderView = grid;

            this.Content = navigationDrawer;
        }
    }
}