foreach (KeyValuePair<DateTime, string> kvp in dictionary)
{
//textBox3.Text += ("Key = {0}, Value = {1}", kvp.Key, kvp.Value);
Console.WriteLine("Key = {0}, Value = {1}", kvp.Key, kvp.Value);
}
dict.Select(i => $"{i.Key}: {i.Value}").ToList().ForEach(Console.WriteLine);