LINQ to JSON has methods available for parsing JSON from a string or loading JSON directly from a file.

# Parsing JSON text

JSON values can be read from a string using M:Newtonsoft.Json.Linq.JToken.Parse(System.String).

Parsing a JSON Object from text

Parsing a JSON Array from text

# Loading JSON from a file

JSON can also be loaded directly from a file using M:Newtonsoft.Json.Linq.JToken.ReadFrom(Newtonsoft.Json.JsonReader).

Reading JSON from a file

LINQ to JSON
LINQtoJSON.htm
_self
M:Newtonsoft.Json.Linq.JToken.Parse(System.String)
M:Newtonsoft.Json.Linq.JToken.ReadFrom(Newtonsoft.Json.JsonReader)