Latest Contributions by ShaningYu

I created a user control for Overview Map using ESRI's source code in http://help.arcgis.com/en/webapi/silverlight/samples/start.htm#OverviewMap             <esri:OverviewMap x:Name="MyOverviewMap" Margin="35,25,35,25" MaximumExtent="-180,-90,180,90"                     Map="{Binding ElementName=_Map}">                 <esri:OverviewMap.Layer>                     <esri:ArcGISTiledMapServiceLayer ID="TopoLayer"                            Url="http://services.arcgisonline.com/ArcGIS/rest/services/NPS_Physical_World_2D/MapServer"/>                 </esri:OverviewMap.Layer>             </esri:OverviewMap> where _Map is defined in its .xaml.cs file:         private MainPage _Parent;         private Map _Map;         #region Public Methods         public Overview()   {             InitializeComponent();             ...         }         public void SetMap(Map TheMap)  {             _Map = TheMap;         }         public void SetParent(MainPage TheParent)  {             _Parent = TheParent;         } However, the Overview Map is still empty.  I debugged, and observed that _Map contains 4 layers (not null).  There must be something missing for the binding.  If you know, please point it our.  Thanks. ... View more

I created a toolbar, e.g. the BaseMap Switch tool bar that allows me to switch from one basemap to another.   Then I created a control toolbar.  By clicking a button, the BaseMap Switch toolbar can be either expanded or collapsed. I wrote a piece of code (see below), but I don't know how to set the value for the BaseMap Toolbar's visibility (or something else).  If you have the experience, please share it with me.  Thanks.         private void SetTool(Button btn)         {             _Parent = (MainPage)System.Windows.Application.Current.RootVisual;             _Parent.UnsetTool();             btn.Background = (Brush)Application.Current.Resources["ButtonHighlightBrush"];             _btnCurrentTool = btn;             if (btn == btnMapSwitch)             {                 //_Parent.MyBaseMaps.Visibility = "Collapse";  // can't be a string, what should be?             }             ...          } ... View more

I tried to customize a template received by adding the Switch Map component sourced from ESRI: http://help.arcgis.com/en/webapi/silverlight/samples/start.htm#SwitchMap.  The procedure I used is described below: 1) Create Switch.xaml as well as .cs file in \UserControls\. 2) Copy and paste the related source codes into the 2 files mentioned in 1).  E.g., in the xaml file:     <Grid Name="LayoutRoot" Background="Transparent">         <Grid.Resources>             <esri:SimpleFillSymbol x:Name="DefaultFillSymbol" Fill="#33FF0000" BorderBrush="Red" BorderThickness="2" />         </Grid.Resources>         <unb:FloatingPanel x:Name="MyFloatingPanel" Floating="True" Margin="0,0,0,0" />         <Grid Style="{StaticResource FloatingPanelItemsGrid}" Margin="10,10,10,10">             <Rectangle Style="{StaticResource ForePanel}" HorizontalAlignment="Left" Width="220" />             <StackPanel Orientation="Horizontal" HorizontalAlignment="Center" Margin="18,0,6,0" Width="196">                 <RadioButton x:Name="StreetsRadioButton" .../>                 <RadioButton x:Name="TopoRadioButton" .../>                 <RadioButton x:Name="ImageryRadioButton" ... />             </StackPanel>         </Grid>     </Grid> 3) Add the following code into MainPage.xaml             <esri:Map x:Name="MyMap"                       Canvas.Left="0" Canvas.Top="0" Height="900" Width="1200"                       IsLogoVisible="False">                 <esri:ArcGISTiledMapServiceLayer ID="AGOLayer" Visible="True"                     Url="http://server.arcgisonline.com/ArcGIS/rest/services/ESRI_StreetMap_World_2D/MapServer"/>                 <esri:GraphicsLayer ID="ResultsGraphicsLayer" />                 <esri:GraphicsLayer ID="MeasureGraphicsLayer" />                 <esri:GraphicsLayer ID="IDGraphicsLayer" />             </esri:Map> 4) Compile and run debugging. I received NullReferenceException at         private void RadioButton_Click(object sender, RoutedEventArgs e)         {             ArcGISTiledMapServiceLayer arcgisLayer = _Parent.MyMap.Layers["AGOLayer"] as ArcGISTiledMapServiceLayer; I don't know how to fix it.  If you can share your experience, I will greatly appreciate. ... View more

I loaded a sample code into the \UserControls\ folder of the project.  I want to load the widget (e.g. myControl.xaml as well as myControl.xaml.cs) as a MenuItem through a menu.   The related code is below:                     <Button x:Name="myMenuItem1"                             Style="{StaticResource MenuItem}"                             ToolTipService.ToolTip="Your First Menu Here!"                             Content="SubMenu #1" > I tried to find a piece of sample code to triggle the widget but not successful.  If you know how, I will appreciate your help.  Thanks. ... View more

I loaded the sample code from http://help.arcgis.com/en/webapi/silverlight/samples/start.htm#ToolBarWidget, which contains the navigation tools.  However, both the To Previous and To Next tools do not function.  For the code in the XAML file, <esri:ToolbarItem.Content>                                     <Image Source="/Assets/images/i_next.png" IsHitTestVisible="False" ... I removed   IsHitTestVisible="False" But it still does not function well.  I debugged its C# code for Previous Extent, and observed that _currentExtentIndex is always 0.  Then,                         if (_currentExtentIndex == !0)    {                            ......                         }                         break; it goes to break.  I got similiar result for the Next Extent. If you know where the problem is, please share your experience.  Thanks. ... View more

I used to work on ESRI's Flexviewer and currently work on Silverlight version template ESRIStandardMapApplication.  I followed the procedure in http://help.arcgis.com/en/webapi/silverlight/help/index.html - Working with Templates, and loaded ESRI's ESRI Standard Map Application template as my new project.  Then I received 17 errors.  The 1st error is: Error 1 Unable to load the metadata for assembly 'ESRIStandardMapApplication1'. This assembly may have been downloaded from the web.  See http://go.microsoft.com/fwlink/?LinkId=179545.  The following error was encountered during load: Could not load file or assembly 'ESRIStandardMapApplication1' or one of its dependencies. The system cannot find the file specified c:\documents and settings\myName\my documents\visual studio 2010\Projects\ESRIStandardMapApplication1\ESRIStandardMapApplication1\MainPage.xaml I then checked the http://go.microsoft.com/fwlink/?LinkId=179545.  However, I don't know which assembly needs to be unblocked. If you have experienced this kind of problem, please share your experience.  Thanks. ... View more