title: Append data in a json file in C#
body: <p>How would i keep appending data?
  I have this:</p>
  
  <pre><code>{
    "13232": [
      "2012952"
    ]
  }
  </code></pre>
  
  <p>And i want to add an another object to it, example:</p>
  
  <pre><code>{
    "13232": [
      "2012952"
    ],
    "19213": [
      "2016086"
    ]
  }
  </code></pre>
  
  <p>This is the code i use: </p>
  
  <pre><code>JArray array = new JArray();
  array.Add(Itemid);
  
  JObject o = new JObject();
  o[Userid] = array;
  
  string json = o.ToString(Formatting.Indented);
  //i know this keeps appending text but how would i append it inside the { and }?
  File.AppendAllText("E:/media.json", json);
  </code></pre>
  
  <p>I literally have no idea how to keep adding it, but maybe someone else has?</p>