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The JavaScript JSON Cookbook

The JavaScript JSON Cookbook

By : Ray Rischpater
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The JavaScript JSON Cookbook

The JavaScript JSON Cookbook

1 (2)
By: Ray Rischpater

Overview of this book

If you're writing applications that move structured data from one place to another, this book is for you. This is especially true if you've been using XML to do the job because it's entirely possible that you could do much of the same work with less code and less data overhead in JSON. While the book's chapters make some distinction between the client and server sides of an application, it doesn't matter if you're a frontend, backend, or full-stack developer. The principles behind using JSON apply to both the client and the server, and in fact, developers who understand both sides of the equation generally craft the best applications.
Table of Contents (12 chapters)
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11
Index

Decoding data from BSON using Json.NET

Using Json.NET, decoding BSON is the opposite of encoding; given a class that describes the data to decode and a blob of binary data, invoke a reader to read the data.

Getting ready

Of course, you need a reference to the Json.NET assembly in your project in order to do this. See recipe How to Deserialize an object using Json.NET in Chapter 7, Using JSON in a Type-safe Manner, to learn how to add a reference to Json.NET in your application using NuGet.

How to do it…

Starting with a stream, you'll use a BsonReader with a JsonSerializer to deserialize the BSON. Assuming data is byte[] of BSON data:

MemoryStream ms = new MemoryStream(data);
using (var reader = new Newtonsoft.Json.Bson.BsonReader(ms))
{
  var serializer = new Newtonsoft.Json.JsonSerializer();
  var r = serializer.Deserialize<Record>(reader);

  // use r
}

How it works…

We create MemoryStream from the incoming data, which we use with BsonReader to actually read the data...

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