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<html>
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<title>Serializing and Deserializing JSON</title>
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<span class="productTitle">Json.NET - Quick Starts & API Documentation</span><br />
<span class="topicTitle">Serializing and Deserializing JSON</span></div>
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<span style="color: DarkGray"> </span>
<p>The quickest method of converting between JSON text and a .NET object is using
the <a href="./html/T_Newtonsoft_Json_JsonSerializer.htm">JsonSerializer</a>. The JsonSerializer converts .NET objects into their JSON
equivalent and back again.</p>
<p>For simple scenarios where you want to convert to and from a JSON string the <a href="./html/Overload_Newtonsoft_Json_JsonConvert_SerializeObject.htm">SerializeObject</a> and <a href="./html/Overload_Newtonsoft_Json_JsonConvert_DeserializeObject.htm">DeserializeObject</a> methods on <a href="./html/T_Newtonsoft_Json_JsonConvert.htm">JsonConvert</a> provide an easy to use wrapper over
JsonSerializer.</p>
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<div style="font-family: Courier New; font-size: 10pt; color: black;">
<pre style="margin: 0px;"><span style="color: #2b91af;">Product</span> product = <span style="color: blue;">new</span> <span style="color: #2b91af;">Product</span>();</pre>
<pre style="margin: 0px;"> </pre>
<pre style="margin: 0px;">product.Name = <span style="color: #a31515;">"Apple"</span>;</pre>
<pre style="margin: 0px;">product.Expiry = <span style="color: blue;">new</span> <span style="color: #2b91af;">DateTime</span>(2008, 12, 28);</pre>
<pre style="margin: 0px;">product.Price = 3.99M;</pre>
<pre style="margin: 0px;">product.Sizes = <span style="color: blue;">new</span> <span style="color: blue;">string</span>[] { <span style="color: #a31515;">"Small"</span>, <span style="color: #a31515;">"Medium"</span>, <span style="color: #a31515;">"Large"</span> };</pre>
<pre style="margin: 0px;"> </pre>
<pre style="margin: 0px;"><span style="color: blue;">string</span> output = <span style="color: #2b91af;">JsonConvert</span>.SerializeObject(product);</pre>
<pre style="margin: 0px;"><span style="color: green;">//{</span></pre>
<pre style="margin: 0px;"><span style="color: green;">// "Name": "Apple",</span></pre>
<pre style="margin: 0px;"><span style="color: green;">// "Expiry": "\/Date(1230375600000+1300)\/",</span></pre>
<pre style="margin: 0px;"><span style="color: green;">// "Price": 3.99,</span></pre>
<pre style="margin: 0px;"><span style="color: green;">// "Sizes": [</span></pre>
<pre style="margin: 0px;"><span style="color: green;">// "Small",</span></pre>
<pre style="margin: 0px;"><span style="color: green;">// "Medium",</span></pre>
<pre style="margin: 0px;"><span style="color: green;">// "Large"</span></pre>
<pre style="margin: 0px;"><span style="color: green;">// ]</span></pre>
<pre style="margin: 0px;"><span style="color: green;">//}</span></pre>
<pre style="margin: 0px;"> </pre>
<pre style="margin: 0px;"><span style="color: #2b91af;">Product</span> deserializedProduct = <span style="color: #2b91af;">JsonConvert</span>.DeserializeObject<<span style="color: #2b91af;">Product</span>>(output);</pre>
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<p>
SerializeObject and DeserializeObject both have overloads that take a
<a href="html/T_Newtonsoft_Json_JsonSerializerSettings.htm">JsonSerializerSettings</a> object. JsonSerializerSettings lets you use many of the JsonSerializer settings listed below while still using the simple serialization methods.
</p>
<h3>JsonSerializer</h3>
<p>For more control over how an object is serialized the JsonSerializer can be used
directly. The JsonSerializer is able to read and write JSON text directly to
a stream via <a href="./html/T_Newtonsoft_Json_JsonTextReader.htm">JsonTextReader</a> and <a href="./html/T_Newtonsoft_Json_JsonTextWriter.htm">JsonTextWriter</a>. Other kinds of JsonWriters can
also be used such as <a href="./html/T_Newtonsoft_Json_Linq_JTokenReader.htm">JTokenReader</a>/<a href="./html/T_Newtonsoft_Json_Linq_JTokenWriter.htm">JTokenWriter</a> to
convert your object to and
from LINQ to JSON objects or <a href="./html/T_Newtonsoft_Json_Bson_BsonReader.htm">BsonReader</a>/<a href="./html/T_Newtonsoft_Json_Bson_BsonWriter.htm">BsonWriter</a> to convert to and from BSON.</p>
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<div style="font-family: Courier New; font-size: 10pt; color: black;">
<pre style="margin: 0px;"><span style="color: #2b91af;">Product</span> product = <span style="color: blue;">new</span> <span style="color: #2b91af;">Product</span>();</pre>
<pre style="margin: 0px;">product.Expiry = <span style="color: blue;">new</span> <span style="color: #2b91af;">DateTime</span>(2008, 12, 28);</pre>
<pre style="margin: 0px;"> </pre>
<pre style="margin: 0px;"><span style="color: #2b91af;">JsonSerializer</span> serializer = <span style="color: blue;">new</span> <span style="color: #2b91af;">JsonSerializer</span>();</pre>
<pre style="margin: 0px;">serializer.Converters.Add(<span style="color: blue;">new</span> <span style="color: #2b91af;">JavaScriptDateTimeConverter</span>());</pre>
<pre style="margin: 0px;">serializer.NullValueHandling = <span style="color: #2b91af;">NullValueHandling</span>.Ignore;</pre>
<pre style="margin: 0px;"> </pre>
<pre style="margin: 0px;"><span style="color: blue;">using</span> (<span style="color: #2b91af;">StreamWriter</span> sw = <span style="color: blue;">new</span> <span style="color: #2b91af;">StreamWriter</span>(<span style="color: #a31515;">@"c:\json.txt"</span>))</pre>
<pre style="margin: 0px;"><span style="color: blue;">using</span> (<span style="color: #2b91af;">JsonWriter</span> writer = <span style="color: blue;">new</span> <span style="color: #2b91af;">JsonTextWriter</span>(sw))</pre>
<pre style="margin: 0px;">{</pre>
<pre style="margin: 0px;"> serializer.Serialize(writer, product);</pre>
<pre style="margin: 0px;"> <span style="color: green;">// {"Expiry":new Date(1230375600000),"Price":0}</span></pre>
<pre style="margin: 0px;">}</pre>
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<p>JsonSerializer has a number of properties on it to customize how it serializes JSON.
These can also be used with the methods on JsonConvert via the
JsonSerializerSettings overloads.</p>
<p>Read more about the available JsonSerializer settings here:
<a href="SerializationSettings.html">Serialization Settings</a></p>
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