Map rotation

<UserControl x:Class="ArcGIS.WPF.Samples.MapRotation.MapRotation"
             xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
             xmlns:esri="http://schemas.esri.com/arcgis/runtime/2013">
    <Grid>
        <esri:MapView x:Name="MyMapView" />
        <Border Style="{StaticResource BorderStyle}">
            <Grid>
                <Grid.RowDefinitions>
                    <RowDefinition Height="Auto" />
                    <RowDefinition Height="Auto" />
                </Grid.RowDefinitions>
                <Grid.ColumnDefinitions>
                    <ColumnDefinition Width="*" />
                    <ColumnDefinition Width="50" />
                </Grid.ColumnDefinitions>
                <TextBlock Grid.Row="0"
                           Grid.Column="0"
                           Grid.ColumnSpan="2"
                           FontWeight="SemiBold"
                           Text="Slide to rotate the map."
                           TextAlignment="Center" />
                <Slider x:Name="MySlider"
                        Grid.Row="1"
                        Grid.Column="0"
                        Margin="0,5,0,0"
                        VerticalAlignment="Center"
                        Maximum="180"
                        Minimum="0"
                        ValueChanged="MySlider_ValueChanged"
                        Value="0" />
                <TextBlock x:Name="MyLabel"
                           Grid.Row="1"
                           Grid.Column="1"
                           Padding="0,2,0,0"
                           VerticalAlignment="Center"
                           Text="0°"
                           TextAlignment="Center" />
            </Grid>
        </Border>
    </Grid>
</UserControl>

// Copyright 2016 Esri.
//
// Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License.
// You may obtain a copy of the License at: http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an
// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific
// language governing permissions and limitations under the License.

using Esri.ArcGISRuntime.Mapping;
using System.Windows;

namespace ArcGIS.WPF.Samples.MapRotation
{
    [ArcGIS.Samples.Shared.Attributes.Sample(
        name: "Map rotation",
        category: "MapView",
        description: "Rotate a map.",
        instructions: "Use the slider to rotate the map.",
        tags: new[] { "rotate", "rotation", "viewpoint" })]
    public partial class MapRotation
    {
        public MapRotation()
        {
            InitializeComponent();

            Initialize();
        }

        private void Initialize()
        {
            // Show a new map with a streets basemap.
            MyMapView.Map = new Map(BasemapStyle.ArcGISStreets);
        }

        private void MySlider_ValueChanged(object sender, RoutedPropertyChangedEventArgs<double> e)
        {
            // Display the rotation value in the Label formatted nicely with degree symbol.
            MyLabel.Text = string.Format("{0:0}\u00b0", MySlider.Value);

            // Set the MapView rotation to that of the Slider.
            MyMapView.SetViewpointRotationAsync(e.NewValue);
        }
    }
}