Map initial extent

<UserControl x:Class="ArcGIS.WPF.Samples.SetInitialMapArea.SetInitialMapArea"
             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" />
    </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.Geometry;
using Esri.ArcGISRuntime.Mapping;

namespace ArcGIS.WPF.Samples.SetInitialMapArea
{
    [ArcGIS.Samples.Shared.Attributes.Sample(
        name: "Map initial extent",
        category: "Map",
        description: "Display the map at an initial viewpoint representing a bounding geometry.",
        instructions: "When the sample loads, note that the map view opens at the initial viewpoint defined on the map.",
        tags: new[] { "envelope", "extent", "initial", "viewpoint", "zoom" })]
    public partial class SetInitialMapArea
    {
        public SetInitialMapArea()
        {
            InitializeComponent();

            // Create the UI, setup the control references and execute initialization
            Initialize();
        }

        private void Initialize()
        {
            // Create new Map with basemap
            Map myMap = new Map(BasemapStyle.ArcGISImageryStandard);

            // Create and set initial map area
            Envelope initialLocation = new Envelope(
                -12211308.778729, 4645116.003309, -12208257.879667, 4650542.535773,
                SpatialReferences.WebMercator);
            myMap.InitialViewpoint = new Viewpoint(initialLocation);

            // Assign the map to the MapView
            MyMapView.Map = myMap;
        }
    }
}