private void button4_Click(object sender, EventArgs e)
{
string station_number = textBox4.Text;
string city_name = textBox2.Text;
string station_information = velibService.GetInfomationsOfStation(city_name, station_number);
var arr = station_information.Split(Environment.NewLine.ToCharArray());
List <string> stations_formate = new List <string>(arr);
string res = "";
foreach (string stname in stations_formate)
{
res = res + stname + Environment.NewLine;
}
textBox5.Text = res;
}