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Jayaprakash
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Enabling only few states in USA map
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In a USA map, I want to enable highlighting and selection in only few states. How I can do that? Do I need to customize something in the map shape file? Or I can handle in code itself? Please help me.

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  • 30692
    Offline posted

    Do you mean something like this?

    Markup:

    <UserControl x:Class="SilverlightApplication18.MainPage"

        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"

        mc:Ignorable="d" d:DesignWidth="640" d:DesignHeight="480" xmlns:igMap="clr-namespace:Infragistics.Silverlight.Map;assembly=Infragistics.Silverlight.DataVisualization.Map.v9.2">

      <Grid x:Name="LayoutRoot">

            <igMap:XamWebMap x:Name="theMap" ElementClick="theMap_ElementClick">

                <igMap:XamWebMap.Layers>

                    <igMap:MapLayer Imported="MapLayer_Imported">

                        <igMap:MapLayer.Reader>

                            <igMap:ShapeFileReader Uri="ShapeFiles/usa_st" DataMapping="Name = STATE_NAME; Caption = STATE_NAME" />

                        </igMap:MapLayer.Reader>

                    </igMap:MapLayer>

                </igMap:XamWebMap.Layers>

            </igMap:XamWebMap>

        </Grid>

    </UserControl>

    Code:

    public partial class MainPage : UserControl

        {

            private Dictionary<String, Boolean> _allowedNames = new Dictionary<string, bool>();

     

            public MainPage()

            {

                InitializeComponent();

     

                _allowedNames.Add("New Jersey", true);

                _allowedNames.Add("Alaska", true);

            }

     

            private void MapLayer_Imported(object sender, Infragistics.Silverlight.Map.MapLayerImportEventArgs e)

            {

                foreach (MapElement ele in theMap.Layers[0].Elements)

                {

                    if (_allowedNames.ContainsKey(ele.Name))

                    {

                        ele.IsClickable = true;

                        ele.IsSelectable = true;

                    }

                    else

                    {

                        ele.IsClickable = false;

                        ele.IsSelectable = false;

                    }

                }

            }

     

            private void theMap_ElementClick(object sender, MapElementClickEventArgs e)

            {

                MessageBox.Show("You clicked on: " + e.Element.Name);

            }

        }

    Please let me know if you have any questions.

    -Graham

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