Models.cs

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

namespace PackageDownloadsExample
{
    /// <summary>
    /// A package that matched a search query.
    /// 
    /// See https://docs.microsoft.com/en-us/nuget/api/search-query-service-resource#search-result
    /// </summary>
    public class SearchResult
    {
        /// <summary>
        /// The ID of the matched package.
        /// </summary>
        [JsonProperty("id")]
        public string PackageId { get; set; }

        /// <summary>
        /// The total downloads for all versions of the matched package.
        /// </summary>
        [JsonProperty("totalDownloads")]
        public long TotalDownloads { get; set; }

        /// <summary>
        /// The versions of the matched package.
        /// </summary>
        [JsonProperty("versions")]
        public IReadOnlyList<SearchResultVersion> Versions { get; set; }
    }

    /// <summary>
    /// A single version from a <see cref="SearchResult"/>.
    /// 
    /// See https://docs.microsoft.com/en-us/nuget/api/search-query-service-resource#search-result
    /// </summary>
    public class SearchResultVersion
    {
        /// <summary>
        /// The package's full NuGet version after normalization, including any SemVer 2.0.0 build metadata.
        /// </summary>
        [JsonProperty("version")]
        public string Version { get; set; }

        /// <summary>
        /// The downloads for this single version of the matched package.
        /// </summary>
        [JsonProperty("downloads")]
        public long Downloads { get; set; }
    }
}