Latest Contributions by DominiqueBroux

In the example, the datacontext of each item is the layer itself (it's why we can display the name, change the opacity....). So if you add a 'Delete' button, you have to write a code like: private void ButtonDelete_Click(object sender, System.Windows.RoutedEventArgs e) { FrameworkElement element = sender as FrameworkElement; this.MyMap.Layers.Remove(element.DataContext as Layer); } The layer will be removed from the map and the button/checkbox/slider will be removed automatically as well (thanks to the SL/WPF binding). Concerning your question about the layer removal through XAML, I don't think you can do that out of the box. ... View more

Something simple like: double ratio = 200/200.5;     p2.X = p1.X + ratio * (p2.X-p1.X); p2.Y = p1.Y + ratio * (p2.Y-p1.Y); or do you need to deal with geodesic precision? ... View more

In this case, you can no more take advantage of the existing collection 'QueryTask.LastResults.Features'. You have to manage yourself a collection of graphics. When you get the result of a query, depending on your need, you can append/replace/combine/clear the collection. ... View more

As your control is not visible, it's not loaded. You might try by making it visible and by collapsing it when loaded. Example in XAML:             <i:Interaction.Triggers>                 <i:EventTrigger EventName="Loaded">                     <ei:ChangePropertyAction PropertyName="Visibility">                         <ei:ChangePropertyAction.Value>                             <Visibility>Collapsed</Visibility>                         </ei:ChangePropertyAction.Value>                     </ei:ChangePropertyAction>                 </i:EventTrigger>             </i:Interaction.Triggers> ... View more

Remove the layer from the layer collection associated to the map. Something like: myMap.Layers.Remove(myLayer); ... View more

Which version of API are you working with? I forgot to mention that LayerInfo property was only existing from version 2.0. Links to documentation:   LayerInfo property : http://help.arcgis.com/en/webapi/silverlight/apiref/topic316.html   FeatureLayerInfo members : http://help.arcgis.com/en/webapi/silverlight/apiref/topic342.html If you are using the version 2.0 and don't get any description for your feature layer, check that your service is giving such information. Example of service giving a description and a copyright : http://sampleserver1.arcgisonline.com/ArcGIS/rest/services/Demographics/ESRI_Census_USA/MapServer/0?f=pjson ... View more

The extension method 'ESRI.ArcGIS.Client.Bing.Transform.GeographicToWebMercator(this ESRI.ArcGIS.Client.Geometry.MapPoint)' should be helpful. /Dominique ... View more

For a featureLayer, Description and CopyrightText are given by the property layerInfo. A tooltip like:    <ToolTipService.ToolTip>         <StackPanel MaxWidth="400">             <TextBlock FontWeight="Bold" Text="{Binding CopyrightText}" TextWrapping="Wrap" />             <TextBlock FontWeight="Bold" Text="{Binding LayerInfo.CopyrightText}" TextWrapping="Wrap" />             <TextBlock Text="{Binding Description}" TextWrapping="Wrap" />             <TextBlock Text="{Binding LayerInfo.Description}" TextWrapping="Wrap" />         </StackPanel>     </ToolTipService.ToolTip> should work in this case. /Dominique ... View more

Get the rings of the polygon, each ring is a collection of point. For example, to get the points of the first ring of your polygon, you can use : ESRI.ArcGIS.Client.Geometry.PointCollection points = myPolygon.Rings[0]; /Dominique ... View more

Looks working for me with something like : <Grid x:Name="LayoutRoot">     <Grid.RowDefinitions>         <RowDefinition Height="10" ></RowDefinition>         <RowDefinition Height="*" ></RowDefinition>         <RowDefinition Height="30" ></RowDefinition>     </Grid.RowDefinitions>     <Grid.ColumnDefinitions>         <ColumnDefinition Width="250" />         <ColumnDefinition Width="*"/>         <ColumnDefinition Width="10" />     </Grid.ColumnDefinitions>     <!-- Map Control -->     <esri:Map x:Name="Map" Background="White" Grid.Row="1" Grid.Column="1"> ....... Rows/Columns 0 and 2 have fixed sizes and the map in row 1/Column 1 is using the remaining space. /Dominique ... View more

You are getting the same error than if your feature layer URL was incorrect. Verify what you get if you execute a query on your feature layer URL. With the sample, you get this : http://sampleserver1.arcgisonline.com/ArcGIS/rest/services/Demographics/ESRI_Census_USA/MapServer/0?f=pjson (pjson =  format pretty json to be more readable). /Dominique ... View more

You are right, it looks like there is an issue in this case. As a temporarly workaround, you can initialize the extent by code when the map is loaded :        <esri:Map x:Name="MyMap" Layers="{Binding Layers, Mode=OneWay}" Loaded="MyMap_Loaded" /> void MyMap_Loaded(object sender, System.Windows.RoutedEventArgs e) {   MyMap.Extent = (ESRI.ArcGIS.Client.Geometry.Envelope)LayoutRoot.Resources["InitialExtent"]; } /Dominique ... View more

If you have the version 2 of the API, another option you might consider is to create a FeatureLayer which will give you the list of fields after the initialization step. Example: Declare a feature layer in selection only mode in order not to request any data you don't need.     <esri:FeatureLayer Url="http://sampleserver1.arcgisonline.com/ArcGIS/rest/services/Demographics/ESRI_Census_USA/MapServer/0"         Mode="SelectionOnly" Initialized="FeatureLayer_Initialized"> Get the fields by handling 'Initialized' event : private void FeatureLayer_Initialized(object sender, EventArgs e) { FeatureLayer featureLayer = sender as FeatureLayer; List<Field> fields = featureLayer.LayerInfo.Fields; fields.ForEach(field => Debug.WriteLine(String.Format("Field Name = {0}, Alias = {1}, type = {2}", field.Name, field.Alias, field.Type))); } /Dominique ... View more

You have to edit the template : Open the project in Blend, rightclick the Toolbar and select to edit a copy of the template. Select the stackpanel called 'RootElement'. Change the orientation from Horizontal to Vertical. /Dominique ... View more

From an ArcGISDynamicmapServiceLayer, you can use either 'Identify' which returns the features of the map service near a point (example : http://resources.esri.com/help/9.3/arcgisserver/apis/silverlight/samples/start.htm#Identify ) or a Query task which returns the features of a layer (example : http://resources.esri.com/help/9.3/arcgisserver/apis/silverlight/samples/start.htm#SpatialQuery). If you are using the version 2.0 of the API, you can also consider using a featureLayer in SelectionOnly mode (Example : http://help.arcgis.com/en/webapi/silverlight/samples/start.htm#FeatureLayerSelection). Hope this help. /Dominique ... View more