Form is not responding searching by keyword using YoutubeDataAPI

public List<string> links = new List<string>();
public List<string> titles = new List<string>();

public MainForm()
{
    InitializeComponent();
}


private void button1_Click(object sender, EventArgs e)
{
    this.Run().Wait();
    for (int i = 0; i < titles.Count; i++)
    {
        listView1.Items.Add(titles[i]).SubItems.Add(links[i]);
    }
}

private async Task Run()
{
    var youtubeService = new YouTubeService(new BaseClientService.Initializer()
    {
        ApiKey = "myAPIKey",
        ApplicationName = this.GetType().ToString()
    });

    var searchListRequest = youtubeService.Search.List("snippet");
    searchListRequest.Q = "Michael Jackson";
    searchListRequest.MaxResults = 50;
    searchListRequest.VideoCategoryId = "10";
    searchListRequest.Type = "video";

    var searchListResponse = await searchListRequest.ExecuteAsync();
    foreach (var searchResult in searchListResponse.Items)
    {

        switch (searchResult.Id.Kind)
        {
            case "youtube#video":
                titles.Add(searchResult.Snippet.Title);
                links.Add("https://www.youtube.com/watch?v=" + searchResult.Id.VideoId);
                break;
        }
    }
}