private void Btn_Update_Click(object sender, EventArgs e)
{
City c = new City();
c.Id = selectedId;
c.Name = tx_CityName.Text;
c.CountryCode = tx_CountryCode.Text;
c.District = tx_District.Text;
c.Population = tx_Population.Text;
var caller = new myAPIcaller();
caller.UpdateCity(c);
displayAllCaller();
foreach (Control tx in panel1.Controls)
{
if (tx is TextBox)
{
tx.Text = "";
}
}
}
