Latest Contributions by YurongTan

Doese anyone have an idea how to get the dimension parameters (width and height) of a DataGrid that is linked to a dynamic list with varying length?  I am thinking about "Reloading" the DataGrid each time when the list is changed, but am still out of luck so far.  Even though the data on mylist does show up in the DataGrid view, "myDataGrid.ItemsSource = mylist;" does not change the size of the grid, especially when a new list becomes shorter.  It looks like the "size change" of the DataGrid happens after the display.  Any pointers, clues, or samples out there?  Thanks Yurong Tan VAOIG ... View more

I have the following XAML code that produces a flashing-expanding (trobe) point.  I have to specifically commend out the "MapPoint" section in the code solely to prevent Visual Studio 2010 from crashing.  Can someone shed some light on this?  Thanks <esri:GraphicsLayer ID="MyFlashingGraphicPoint" Opacity="0.9" Visible="False" > <esri:GraphicsLayer.Graphics>   <esri:Graphic Symbol="{StaticResource FlashingMarkerSymbol}">    <!--esri:MapPoint x:Name="MySelectedPoint" X="-10000000" Y="4883000">     <esri:Geometry.SpatialReference >      <esri:SpatialReference WKID="102100" />     </esri:Geometry.SpatialReference>    </esri:MapPoint-->   </esri:Graphic> </esri:GraphicsLayer.Graphics> </esri:GraphicsLayer> ... View more

I have a GraphicsLayer "MySelectedPoint" to hold a selected point feature with a different symbol to distinguish it from the underlying graphics layer, but the selected point does not display nor is it visible.  I spent some time looking around for an answer, but couldn't figure out what I missed.   Here is the code: Two marker symbols (smaller solid red and larger blue cross).  The red one is for the underlying graphicslayer "MyGraphicsLayer" and the blue larger one cross is for the selected graphic in "MySelectedPoint" layer. <Grid.Resources> <esri:SimpleMarkerSymbol x:Key="DefaultMarkerSymbol" Size="30" Color="Blue" Style="Cross" /> <esri:SimpleMarkerSymbol x:Key="SimpleMarkerSymbol" Size="14" Color="Red" Style="Circle" /> <esri:Map x:Name="MyMap" WrapAround="True" Extent="-15000000,2000000,-7000000,8000000"> <esri:GraphicsLayer ID="MyGraphicsLayer" Opacity="0.8" /> <esri:GraphicsLayer ID="MySelectedPoint"/> When a record is selected in the DataGrid table, the graphic corresponding to the selected record is cloned and add to the "MySelectedPoint" graphicslayer which does not display even thoug there is a record/graphic in it with cordinates and symbology. private void FindDetails_SelectionChanged(object sender, SelectionChangedEventArgs e) { DataGrid myTargetPoint = sender as DataGrid; int mySelection = myTargetPoint.SelectedIndex; if (mySelection > -1) {   GraphicsLayer mySelectedPoint = MyMap.Layers["MySelectedPoint"] as GraphicsLayer;   mySelectedPoint.ClearGraphics();     Graphic thisPoint = (Graphic)FindDetailsDataGrid.SelectedItems[0];     if (thisPoint != null)   {    Graphic myPoint = new Graphic();    myPoint.Geometry = thisPoint.Geometry.Extent.Clone();    myPoint.Symbol = LayoutRoot.Resources["DefaultMarkerSymbol"] as Symbol;    mySelectedPoint.Graphics.Add(myPoint);    mySelectedPoint.Visible = true;    mySelectedPoint.Opacity = 1.0;   } } } What do I miss here?  Thanks ... View more

Hello, I am wondering if there is some info out there that can explain how to animate marker symbols using storyboard?  I got an example from this site for polygons (see below), but it is kind of working in the dark for markers.  I would appreciate any pointers.  Thanks in advance. EXAMPLE FROM THIS SITE FOR POLYGON GRAPHICS LAYER <esri:FillSymbol x:Key="ResultsFillSymbol">     <esri:FillSymbol.ControlTemplate>         <ControlTemplate x:Name="CustomPolygonTemplate">             <Grid>                 <VisualStateManager.VisualStateGroups>                     <VisualStateGroup x:Name="CommonStates">                          <VisualState x:Name="MouseOver">                             <Storyboard>                                 <ColorAnimation Storyboard.TargetName="Element"                                     Storyboard.TargetProperty="(Fill).(Color)"                                     To="#8800FFFF" Duration="0:0:0.1" />                             </Storyboard>                         </VisualState>                         ..... But for a marker layer, I am lost: <!-- FOR POINT GRAPHICS LAYER -->      <esri:MarkerSymbol x:Key="myFocusPointCustomMarker">    <esri:MarkerSymbol.ControlTemplate>          <ControlTemplate x:Name="myCustomMarkerTemplate">     <Grid>          <VisualStateManager.VisualStateGroups>                <VisualState x:Name="Selected">         <Storyboard>              <PointAnimation Storyboard.TargetName="Element"       Storyboard.TargetProperty="?????" ???? />                      </Storyboard>      </VisualState>                 ...          </VisualStateManager.VisualStateGroups>     </Grid>         </ControlTemplate>    </esri:MarkerSymbol.ControlTemplate> </esri:MarkerSymbol> ... View more

I am working on a secondary "popup" from a MapTip to display additional information and I haven't been able to position the pop up (either TextBox or esri:InfoWindow) properply.  In fact the pop up stays at the center of the map display.  Is there a pointer out there or a sample to look at?  Thanks ... View more

I got this error message and tech support appears to have no clue.  A map service falsely appears fine (started and up running) in ArcCatalog and ArcGIS Server Manager.  And the http://myserver:6080/arcgis/rest/services/myservice/MapServer metadata looks fine too.  BUT the service CAN NOT be viewed or displayed anywhere (ArcCatalog, ArcMap, ArcGIS Server Manager, Visual Studio, deployed web Applications).  When it is previewed in ArcGIS server manager, the following message popped up.  Does anyone have a similar experience?  Thanks in advance! Message: 'dojo' is undefined Line: 10 Char: 2 Code: 0 URI: http://localhost:6080/arcgis/rest/services/BaseMapLayers/MapServer?f=jsapi ... View more

I encountered an app deployment problem and am yet still struggling with it for some time.  It is about deploying a map application developed on the Silverlight (5) platform ArcGIS API(3.0)  together with a WCF RIA service.  The app was developed in the same web server as the hosting one, but in a separate project directory.  It runs fine as a project, but it got choked and spits out an error message (see below) when deployed in the server (wwwroot).  The WCF service is to pull in auxiliary data from a SQL server to juice up pop-ups and facilitate controls and it works great.  But it ceases functioning once the app is deployed in the web server (see message below).   Cam someone shed some light on this as to what is the problem and/or where to look at in order to find a solution? Below is error message ================================================= Message: Unhandled Error in Silverlight Application An exception occurred during the operation, making the result invalid.  Check InnerException for exception details.   at System.ComponentModel.AsyncCompletedEventArgs.RaiseExceptionIfNecessary()    at MyXY.ServiceReference1.FetchHITIssuesCompletedEventArgs.get_Result()    at MyXY.MainPage.HITDataServiceClient_FetchHITIssuesCompleted(Object sender, FetchHITIssuesCompletedEventArgs e)    at MyXY.ServiceReference1.MyXYServiceClient.OnFetchHITIssuesCompleted(Object state) Line: 1 Char: 1 Code: 0 URI: http://oigcodevgis/TEST/MyXY/MyXYTestPage.html ... View more

I forgot to mention this is a Silverlight app. I have a few point records located in central Florida and those records are the results from a query and are displayed on the map as graphics as well as on a DataGrid.  When I clicked on a record in the DataGrid, the map pans to Africa?  What do I miss.  Here is the codes:         private void dataReportLink_SelectionChanged(object sender, SelectionChangedEventArgs e)         {             DataGrid HITHighLight = sender as DataGrid;             int HITSelected = HITHighLight.SelectedIndex;             if (HITSelected > -1)              {                 Graphic thisHIT = (Graphic)dataReportLink.SelectedItem;                 if (thisHIT != null)                 {                     thisHIT.Symbol = LayoutRoot.Resources["MyCrossHairTarget"] as ESRI.ArcGIS.Client.Symbols.Symbol;                     thisHIT.Geometry.SpatialReference = MyMap.SpatialReference;                     MyMap.PanTo(thisHIT.Geometry);                 }             }       } ... View more