private void OnPickerSelectedIndexChanged(object sender, EventArgs e)
{
Picker picker = sender as Picker;
if (picker.Equals(picker_comp_1))
{
selected_company_1 = picker.SelectedItem.ToString();
}
else if (picker.Equals(picker_comp_2))
{
selected_company_2 = picker.SelectedItem.ToString();
}
else
{
quote = picker.SelectedItem.ToString();
}
}