test-alebro/Services/OmdbService.cs

using System.Reflection.Metadata;

class OmdbService
{
    private readonly string url;

    public OmdbService()
    {
        var apiKey = File.ReadAllText("APIKey.txt").Trim();
        apiKey = System.Net.WebUtility.UrlEncode(apiKey);

        url = "http://www.omdbapi.com/?apikey=" + apiKey
            + "&type=movie"
            + "&r=json";
    }

    public async Task<string> FetchMovieDetail(string id)
    {
        var requestUrl = url + "i=" + System.Net.WebUtility.UrlEncode(id);
        using var httpClient = new HttpClient();

        var response = await httpClient.GetStringAsync(requestUrl);
        return response.ToString();
    }

    public async Task<string> FetchMovies(string searchTitle)
    {
        var requestUrl = url + "&t=" + System.Net.WebUtility.UrlEncode(searchTitle);
        using var httpClient = new HttpClient();

        var response = await httpClient.GetStringAsync(requestUrl);
        return response.ToString();
    }
}