This sample shows you how to encode and decode JavaScript Object Notation (JSON) objects, arrays, strings, numbers and booleans using classes in the Windows.Data.Json namespace in your Windows Runtime app. This sample is provided in the C# and C++ programming languages. JavaScript developers should use the JSON.Parse method to parse JSON. For more information, see the JSON Object (JavaScript), an intrinsic object that provides functions to convert JavaScript values to and from the JSON format.
Note This sample was created using one of the universal app templates available in Visual Studio. It shows how its solution is structured so it can run on both Windows 8.1 and Windows Phone 8.1. For more info about how to build apps that target Windows and Windows Phone with Visual Studio, see Build apps that target Windows and Windows Phone 8.1 by using Visual Studio.
This sample demonstrates the following features:
- Serialize and deserialize JSON objects using the JsonObject class.
- Serialize and deserialize JSON arrays using the JsonArray class.
- Serialize and deserialize strings using the JsonValue class.
- Serialize and deserialize numbers using the JsonValue class.
- Serialize and deserialize booleans using the JsonValue class.
The following features can be used in a Windows Runtime app to retrieve text that contains JSON from an HTTP server or send text that contains JSON to an HTTP server.
- Windows.Web.Http.HttpClient - Supports apps written in JavaScript, C#, Visual Basic, or C++.
- XML HTTP Extended Request (IXMLHttpRequest2) - Supports apps written in C++.
- C++ REST SDK - Supports apps written in C++.
Note Use of this sample does not require Internet or intranet access so no network capabilities need to be set in the Package.appmanifest file.
To obtain an evaluation copy of Windows 8.1, go to Windows 8.1.
To obtain an evaluation copy of Microsoft Visual Studio 2013 Update 2, go to Microsoft Visual Studio 2013.
Note For Windows 8 app samples, download the Windows 8 app samples pack. The samples in the Windows 8 app samples pack will build and run only on Microsoft Visual Studio 2012.
Related topics
- Other
- Connecting to web services (Windows Runtime app using C++, C#, or Visual Basic)
- Using JavaScript Object Notation (JSON) (Windows Runtime app using C++, C#, or Visual Basic)
- Reference
- C++ REST SDK
- JsonArray
- JsonObject
- JsonValue
- Windows.Data.Json
- Windows.Web.Http.HttpClient
- XML HTTP Extended Request (IXMLHttpRequest2)
- Samples
- HttpClient Sample
- Windows 8 app samples
Operating system requirements
| Client | |
|---|---|
| Server | |
| Phone |
Build the sample
- Start Visual Studio 2013 Update 2 and select File > Open > Project/Solution.
- Go to the directory to which you unzipped the sample. Go to the directory named for the sample, and double-click the Visual Studio 2013 Update 2 Solution (.sln) file.
- Follow the steps for the version of the sample you want:
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To build the Windows version of the sample:
- Select Json.Windows in Solution Explorer.
- Press Ctrl+Shift+B, or use Build > Build Solution, or use Build > Build Json.Windows.
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To build the Windows Phone version of the sample:
- Select Json.WindowsPhone in Solution Explorer.
- Press Ctrl+Shift+B or use Build > Build Solution or use Build > Build Json.WindowsPhone.
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Run the sample
The next steps depend on whether you just want to deploy the sample or you want to both deploy and run it.
Deploying the sample
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To deploy the built Windows version of the sample:
- Select Json.Windows in Solution Explorer.
- Use Build > Deploy Solution or Build > Deploy Json.Windows.
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To deploy the built Windows Phone version of the sample:
- Select Json.WindowsPhone in Solution Explorer.
- Use Build > Deploy Solution or Build > Deploy Json.WindowsPhone.
Deploying and running the sample
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To deploy and run the Windows version of the sample:
- Right-click Json.Windows in Solution Explorer and select Set as StartUp Project.
- To debug the sample and then run it, press F5 or use Debug > Start Debugging. To run the sample without debugging, press Ctrl+F5 or use Debug > Start Without Debugging.
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To deploy and run the Windows Phone version of the sample:
- Right-click Json.WindowsPhone in Solution Explorer and select Set as StartUp Project.
- To debug the sample and then run it, press F5 or use Debug > Start Debugging. To run the sample without debugging, press Ctrl+F5 or use Debug > Start Without Debugging.