Youtube Video Category List

Here is a sample code in C# to get the YouTube video category list by country:

using System;
using System.Collections.Generic;
using System.Net;
using Newtonsoft.Json;

public class VideoCategory
{
    public string CategoryId { get; set; }
    public string CategoryName { get; set; }
    public string CountryId { get; set; }
    public string CountryName { get; set; }
}

public class YouTubeApi
{
    public List GetVideoCategoryListByCountry(string countryCode)
    {
        string url = "https://www.googleapis.com/youtube/v3/videoCategories?part=snippet®ionCode=" + countryCode + "&key=YOUR_API_KEY";

        using (WebClient client = new WebClient())
        {
            string json = client.DownloadString(url);

            dynamic data = JsonConvert.DeserializeObject(json);

            List videoCategories = new List();

            foreach (var item in data.items)
            {
                VideoCategory videoCategory = new VideoCategory
                {
                    CategoryId = item.id,
                    CategoryName = item.snippet.title,
                    CountryId = data.regionCode,
                    CountryName = data.items[0].snippet.country
                };

                videoCategories.Add(videoCategory);
            }

            return videoCategories;
        }
    }
}

class Program
{
    static void Main(string[] args)
    {
        var youtubeApi = new YouTubeApi();

        // You can pass in the country code as a parameter to get video category list for that country
        List videoCategories = youtubeApi.GetVideoCategoryListByCountry("US");

        foreach (var category in videoCategories)
        {
            Console.WriteLine("CategoryId: " + category.CategoryId);
            Console.WriteLine("CategoryName: " + category.CategoryName);
            Console.WriteLine("CountryId: " + category.CountryId);
            Console.WriteLine("CountryName: " + category.CountryName);
            Console.WriteLine("---------------");
        }
    }
}

Please replace YOUR_API_KEY with your actual YouTube Data API key. Also, make sure to install the Newtonsoft.Json NuGet package in your project.

This code will fetch the video category list for a specific country and display the CategoryId, CategoryName, CountryId, and CountryName for each category.