async void SelectOne(object sender, EventArgs args)
{
ImagePreviwer.SetValue(IsVisibleProperty, true);
PreviuseButton.SetValue(IsVisibleProperty, true);
NextButton.SetValue(IsVisibleProperty, true);
SelectGrid.SetValue(IsVisibleProperty, false);
}
async void OnNextButton(object sender, EventArgs args)
{
counter = (counter < 8) ? (counter + 1) : 1;
string name = string.Format("a{0}.jpg", counter.ToString());
ImagePreviwer.Source = name;
if (counter == 1)
{
ImagePreviwer.SetValue(IsVisibleProperty, false);
PreviuseButton.SetValue(IsVisibleProperty, false);
NextButton.SetValue(IsVisibleProperty, false);
ExamGrid.SetValue(IsVisibleProperty, true);
}
}