private async void InpitTrigger(object sender, EventArgs e)
{
if (!InputAmount.IsFocused)
{
InputAmount.Focus();
}
}
private void BtnCalculate_Click(object sender, EventArgs e)
{
if (string.IsNullOrWhiteSpace(InputAmount.Text))
{
InputAmount.Focus();
}
}
protected override void OnAppearing()
{
base.OnAppearing();
InputAmount.Focus();
}