ArcGIS API for Silverlight getting started (1) Hello World FAQs

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This error is inexplicable today.

 

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Error: the object is missing.

After checking the code multiple times, you can't see any problems. ThenAdd the initializationfailed attribute to the above layer.

Front-end code

  <  Usercontrol X: Class  = "Apiforsilverlightsamp. S2"  
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"  
Xmlns: ESRI = "CLR-namespace: ESRI. ArcGIS. Client; Assembly = ESRI. ArcGIS. Client"  
MC: ignorable  = "D"  >  
  <  Grid  X: Name  = "Layoutroot"  Background  = "White"  >  
  <  ESRI: Map  X: Name = "Mymap"  >  
  <  ESRI: map. Layers  >  
  <  ESRI: arcgistiledmapservicelayer  ID  = "Layerworldmap"  Initializationfailed  = "Arcgistiledmapservicelayer_initializationfailed"  
URL = "Http://server.arcgisonline.com/ArcGIS/rest/services/ESRI_Imagery_World_2D/MapServer"     />  
  </  ESRI: map. Layers  >  
  </  ESRI: Map  >  
  </  Grid  >  
 </  Usercontrol  > 

 

 

 

 

 

Background code

   Private VoidArcgistiledmapservicelayer_initializationfailed (ObjectSender, eventargs E)
{
ESRI. ArcGIS. Client. layer Layer=SenderAsESRI. ArcGIS. Client. layer;
MessageBox. Show (layer. initializationfailure. tostring ());
}
 

 

The following prompt is displayed:

 

when I saw this prompt, I suddenly realized that I was calling the services provided by ESRI, but my current network access was restricted (at the company, I had to open Baidu, msdn, and other websites before ten o'clock A.M, google doesn't open it either. I don't know what the leader thinks about it, You know ). After, access is completely normal.