geekbot/Geekbot.net/Commands/Dog.cs

using System;
using System.Net.Http;
using System.Threading.Tasks;
using Discord.Commands;
using Newtonsoft.Json;

namespace Geekbot.net.Commands
{
    public class Dog : ModuleBase
    {
        [Command("dog", RunMode = RunMode.Async)]
        [Summary("Return a random image of a dog.")]
        public async Task Say()
        {
            using (var client = new HttpClient())
            {
                try
                {
                    client.BaseAddress = new Uri("http://random.dog");
                    var response = await client.GetAsync("/woof.json");
                    response.EnsureSuccessStatusCode();

                    var stringResponse = await response.Content.ReadAsStringAsync();
                    var dogFile = JsonConvert.DeserializeObject<DogResponse>(stringResponse);
                    await ReplyAsync(dogFile.url);
                }
                catch (HttpRequestException e)
                {
                    await ReplyAsync($"Seems like the dog got lost (error occured)\r\n{e.Message}");
                }
            }
        }
    }

    public class DogResponse
    {
        public string url { get; set; }
    }
}