Synchronous Web Service Calls with Silverlight: Dispelling the async-only myth

Daniel Vaughan

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16 Nov 2008LGPL311 min read

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In this article, we look at the asynchronous web service model in Silverlight, and how it can be augmented to allow synchronous web service calls. We also explore efficient channel caching, and asynchronous Silverlight Unit Tests.

silverlightcore_01_00.zip
- Documentation
  - License.txt
- Libraries
  - Microsoft.Silverlight.Testing
    - Microsoft.Silverlight.Testing.dll
    - Microsoft.VisualStudio.QualityTools.UnitTesting.Silverlight.dll
- Source
  - Silverlight
    - SilverlightCore.sln
    - SilverlightCore.Tests
      - App.xaml
      - App.xaml.cs
      - Bin
        
        Debug
        
        de
        
        es
        
        fr
        
        it
        
        ja
        
        ko
        
        zh-Hans
        
        zh-Hant
      - obj
        
        Debug
        
        Page.g.cs
        
        TempPE
      - Properties
        
        AppManifest.xml
        
        AssemblyInfo.cs
      - SilverlightCore.Tests.csproj
      - UISynchronizationContextTest.cs
    - SilverlightCore
      - ArgumentValidator.cs
      - Bin
        
        Debug
        
        de
        
        es
        
        fr
        
        it
        
        ja
        
        ko
        
        zh-Hans
        
        zh-Hant
      - Communication
        
        ChannelManager.cs
        
        IChannelManager.cs
        
        SynchronousChannelBroker.cs
      - Concurrency
        
        ConcurrencyException.cs
        
        ISynchronizationContext.cs
        
        UISynchronizationContext.cs
      - CoreException.cs
      - Diagrams
        
        SilverlightCoreOverview.cd
      - obj
        
        Debug
        
        TempPE
      - Properties
        
        AssemblyInfo.cs
      - Resources
      - Services
      - SilverlightCore.csproj
    - SilverlightExamples.Web
      - App_Data
      - bin
        
        de
        
        es
        
        fr
        
        it
        
        ja
        
        ko
        
        zh-Hans
        
        zh-Hant
      - ClientBin
      - Constants.cs
      - Default.aspx
      - IServiceContract.cs
      - ISimpleService.cs
      - obj
        
        Debug
        
        TempPE
      - Properties
        
        AssemblyInfo.cs
      - Silverlight.js
      - SilverlightExamples.Web.csproj
      - SimpleService.svc
      - SimpleService.svc.cs
      - Web.config
    - SilverlightExamples
      - App.xaml
      - App.xaml.cs
      - Bin
        
        Debug
      - Images
        
        OlympicPictogram.png
      - obj
        
        Debug
        
        TempPE
      - Page.xaml
      - Page.xaml.cs
      - Properties
        
        AppManifest.xml
        
        AssemblyInfo.cs
      - Service References
        
        SimpleServiceReference
        
        configuration.svcinfo
        
        configuration91.svcinfo
        
        Reference.cs
        
        Reference.svcmap
        
        SimpleService.disco
        
        SimpleService.wsdl
        
        SimpleService.xsd
        
        SimpleService1.wsdl
        
        SimpleService1.xsd
      - ServiceReferences.ClientConfig
      - SilverlightExamples.csproj
SimpleBlockingSample.zip
- SimpleBlockingSample
  - BlockingSample.sln
  - BlockingSample.sln.docstates
  - BlockingSample.suo
  - NonBlockingSample.sln.docstates
  - SimpleBlockingSample.Web
    - bin
      - NonBlockingSample.Web.dll
      - NonBlockingSample.Web.pdb
    - BlockingSample.Web.csproj
    - BlockingSample.Web.csproj.user
    - BlockingSampleTestPage.aspx
    - BlockingSampleTestPage.html
    - ClientBin
      - NonBlockingSample.xap
    - obj
      - Debug
        
        BlockingSample.Web.csproj.FileListAbsolute.txt
        
        DesignTimeResolveAssemblyReferencesInput.cache
        
        NonBlockingSample.Web.csproj.FileListAbsolute.txt
        
        NonBlockingSample.Web.dll
        
        NonBlockingSample.Web.pdb
        
        TempPE
    - Properties
      - AssemblyInfo.cs
    - Silverlight.js
    - SilverlightFaultBehavior.cs
    - SimpleService.svc
    - SimpleService.svc.cs
    - Web.config
    - Web.Debug.config
    - Web.Release.config
  - SimpleBlockingSample
    - App.xaml
    - App.xaml.cs
    - Bin
      - Debug
        
        AppManifest.xaml
        
        NonBlockingSample.dll
        
        NonBlockingSample.pdb
        
        NonBlockingSample.xap
        
        NonBlockingSampleTestPage.html
    - BlockingSample.csproj
    - BlockingSample.csproj.user
    - MainPage.xaml
    - MainPage.xaml.cs
    - NonBlockingSample.6.0.ReSharper.user
    - obj
      - Debug
        
        App.g.cs
        
        App.g.i.cs
        
        DesignTimeResolveAssemblyReferences.cache
        
        DesignTimeResolveAssemblyReferencesInput.cache
        
        MainPage.g.cs
        
        MainPage.g.i.cs
        
        NonBlockingSample.csproj.FileListAbsolute.txt
        
        NonBlockingSample.dll
        
        NonBlockingSample.g.resources
        
        NonBlockingSample.pdb
        
        TempPE
        
        Service References.SimpleServiceReference.Reference.cs.dll
        
        XapCacheFile.xml
    - Properties
      - AppManifest.xml
      - AssemblyInfo.cs
    - Service References
      - SimpleServiceReference
        
        configuration.svcinfo
        
        configuration91.svcinfo
        
        Reference.cs
        
        Reference.svcmap
        
        SimpleService.disco
        
        SimpleService.wsdl
        
        SimpleService.xsd
        
        SimpleService1.wsdl
        
        SimpleService1.xsd
    - ServiceReferences.ClientConfig


Microsoft Visual Studio Solution File, Format Version 10.00
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EndProject
Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "SilverlightExamples.Web", "SilverlightExamples.Web\SilverlightExamples.Web.csproj", "{AD5F89E8-5186-40C6-B2FB-B4F371D6BC4D}"
EndProject
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EndProject
Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "SilverlightCore.Tests", "SilverlightCore.Tests\SilverlightCore.Tests.csproj", "{4B7951B7-F0F6-448B-B8D2-D0D46289500D}"
EndProject
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License

This article, along with any associated source code and files, is licensed under The GNU Lesser General Public License (LGPLv3)

Written By

Daniel Vaughan

Engineer

Switzerland

Daniel is a former senior engineer in Technology and Research at the Office of the CTO at Microsoft, working on next generation systems.

Previously Daniel was a nine-time Microsoft MVP and co-founder of Outcoder, a Swiss software and consulting company.

Daniel is the author of Windows Phone 8 Unleashed and Windows Phone 7.5 Unleashed, both published by SAMS.

Daniel is the developer behind several acclaimed mobile apps including Surfy Browser for Android and Windows Phone. Daniel is the creator of a number of popular open-source projects, most notably Codon.

Would you like Daniel to bring value to your organisation? Please contact

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Synchronous Web Service Calls with Silverlight: Dispelling the async-only myth

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