Iron Bug

string json = @"[
   {
     'Title': 'Json.NET is awesome!',
     'Author': {
       'Name': 'James Newton-King',
       'Twitter': '@JamesNK',
       'Picture': '/jamesnk.png'
     },
     'Date': '2013-01-23T19:30:00',
    'BodyHtml': '<h3>Title!</h3>\r\n<p>Content!</p>'
  }
]";
dynamic blogPosts = JArray.Parse(json);
dynamic blogPost = blogPosts[0];
string title = blogPost.Title;
Console.WriteLine(title);
string author = blogPost.Author.Name;
Console.WriteLine(author);
DateTime postDate = blogPost.Date;
Console.WriteLine(postDate);

private void button1_Click(object sender, EventArgs e)
        {
            foreach (DataGridViewRow row in dataGridView1.Rows)
            {
                if (row.Cells[0].Value != null && row.Cells[0].Value.ToString() == textBox1.Text)
                {
                    var ticketsCell = row.Cells[2];
                    var count = int.Parse(ticketsCell.Value.ToString());
                    if (count == 0) MessageBox.Show("Нет билетов!");
                    else ticketsCell.Value = count - 1;
                }
            }
        }