Adding a Label | ComponentOne Maps for WPF and Silverlight

Adding a Label

In This Topic

In this topic, you will add a label to a geographic point – the geographic coordinates of Erie, Pennsylvania (USA) - using a C1VectorLayer and a C1VectorPlacemark. For more information on vector layers, see Vector Layer.

In XAML

Complete the following steps:

Add the following XAML between the <c1:C1Maps> and </c1:C1Maps> tags:

XMAL	Copy Code
<c1:C1VectorLayer> <c1:C1VectorPlacemark LabelPosition="Left" GeoPoint="-80.107008,42.16389" StrokeThickness="2" Foreground="#FFEB1212" PinPoint="-80.010866,42.156831" Label="Erie, PA"/> </c1:C1VectorLayer>

XMAL

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<c1:C1VectorLayer>
<c1:C1VectorPlacemark LabelPosition="Left" GeoPoint="-80.107008,42.16389" StrokeThickness="2" Foreground="#FFEB1212" PinPoint="-80.010866,42.156831" Label="Erie, PA"/>
</c1:C1VectorLayer>

Run the project.

In Code

In XAML view, add x:Name="C1Maps1" to the <c1:C1Maps> tag so that the object will have a unique identifier for you to call in code.

Enter Code view and import the following namespace:

Visual Basic	Copy Code
Imports C1.Silverlight.C1Maps

C#	Copy Code
using C1.Silverlight.C1Maps;

Add the following code beneath the InitializeComponent() method:

Visual Basic	Copy Code
' Create layer and add it to the map Dim vl As C1VectorLayer = New C1VectorLayer() C1Maps1.Layers.Add(vl) 'Create a vector placemark and add it to the layer Dim vp1 As C1VectorPlacemark = New C1VectorPlacemark() vl.Children.Add(vp1) ' Set the placemark to a set of geographical coordinates vp1.GeoPoint = New Point(-80.107008, 42.16389) ' Set the placemark's label and properties vp1.Label = "Erie, PA" vp1.FontSize = 12 vp1.Foreground = New SolidColorBrush(Colors.Red) vp1.LabelPosition = LabelPosition.Center

Visual Basic

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' Create layer and add it to the map
Dim vl As C1VectorLayer = New C1VectorLayer()
C1Maps1.Layers.Add(vl)

'Create a vector placemark and add it to the layer
Dim vp1 As C1VectorPlacemark = New C1VectorPlacemark()
vl.Children.Add(vp1)

' Set the placemark to a set of geographical coordinates
vp1.GeoPoint = New Point(-80.107008, 42.16389)

' Set the placemark's label and properties
vp1.Label = "Erie, PA"
vp1.FontSize = 12
vp1.Foreground = New SolidColorBrush(Colors.Red)
vp1.LabelPosition = LabelPosition.Center

C#	Copy Code
// Create layer and add it to the map C1VectorLayer vl = new C1VectorLayer(); C1Maps1.Layers.Add(vl); //Create a vector placemark and add it to the layer C1VectorPlacemark vp1 = new C1VectorPlacemark(); vl.Children.Add(vp1); // Set the placemark to a set of geographical coordinates vp1.GeoPoint = new Point(-80.107008, 42.16389); // Set the placemark's label and properties vp1.Label = "Erie, PA"; vp1.FontSize = 12; vp1.Foreground = new SolidColorBrush(Colors.Red); vp1.LabelPosition = LabelPosition.Center;

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// Create layer and add it to the map
C1VectorLayer vl = new C1VectorLayer();
C1Maps1.Layers.Add(vl);

//Create a vector placemark and add it to the layer
C1VectorPlacemark vp1 = new C1VectorPlacemark();
vl.Children.Add(vp1);

// Set the placemark to a set of geographical coordinates
vp1.GeoPoint = new Point(-80.107008, 42.16389);

// Set the placemark's label and properties
vp1.Label = "Erie, PA";
vp1.FontSize = 12;
vp1.Foreground = new SolidColorBrush(Colors.Red);
vp1.LabelPosition = LabelPosition.Center;

Run the project.

This Topic Illustrates the Following:

The following image shows a C1Maps control with the geographic coordinates of Erie, Pennsylvania (USA) labeled.