Convert DataTable to JSON with key per row

Question

I thought the following would be a pretty common task and assumed there would be an easy solution for it, but i can\'t find one.

If I have a datatable in the followi

Answer 1

Using JSON.NET (Newtonsoft.Json.Linq)

var obj = new JObject(
    dataTable.Rows.Cast()
         .Select(r => new JProperty(r["ID"].ToString(),
                 new JObject(
                     new JProperty("Name", r["Name"].ToString()),
                     new JProperty("Active", r["Active"].ToString())
                 )
             ))
);

// Convert the JObject to a JSON string
var json = obj.ToString();