Iterate through JSON doc C#

Question

I'm trying to create a simple app that takes a JSON document from the Google Maps API and iterates through it, showing each leg of the route, duration, and distance.

I have gotten it to display the first of leg, but I don't know how to make the boxes repeat. Maybe a foreach loop? I'm new and I'm really not sure.

var from = origin.Text;
var to = destination.Text;
var requesturl = @"http://maps.googleapis.com/maps/api/directions/json?origin="
        + from + "&alternatives=false&units=imperial&destination="
        + to + "&sensor=false";
string content = file_get_contents(requesturl);
JObject o = JObject.Parse(content);
string distance = (string)o.SelectToken("routes[0].legs[0].distance.text");
string instructions =
        (string) o.SelectToken("routes[0].legs[0].steps[0].html_instructions");
txtDistance.Text = distance;
TextBox1.Text = instructions;

Answer 1

You can deserialize the entire JSON response and use objects to iterate over the results. This would be much more maintainable than hardcoding or calculating string paths.

You can take a look at Google Directions C# wrapper for details

Answer 2

This answer: Deserialize JSON into C# dynamic object? has code for some classes that let you deserialize JSON into a dynamic C# object. Sounds like it would be perfect for your needs.

Answer 3

As you have an example json document, you can create related contracts with http://json2csharp.com/ . You can use your object with typed properties afterwards and easily iterate through related fields.