Assuming that your JSON string is a list of objects, each object will correspond to a row in the DataTable, viz:
public DataTable DerializeDataTable()
{
const string json = @"[{""Name"":""AAA"",""Age"":""22"",""Job"":""PPP""},"
+ @"{""Name"":""BBB"",""Age"":""25"",""Job"":""QQQ""},"
+ @"{""Name"":""CCC"",""Age"":""38"",""Job"":""RRR""}]";
var table = JsonConvert.DeserializeObject<DataTable>(json);
return table;
}
This requires the Json.NET framework.
If your JSON structure is different please post it. Best Regards.