/// <summary>
/// Attempts to get page from server, if there are 10 failures then the user is alerted
/// </summary>
/// <param name="pagename">name of page to retrieve</param>
private async Task AttemptGetPage(string pagename)
{
//subscribe to connection issues
var errorCount = 0;
MessagingCenter.Subscribe <ServerAccess>(this, "httprequestexception", sender =>
{
//display error after 10 attempts
if (errorCount < 10)
{
errorCount++;
}
else if (errorCount == 10)
{
errorCount++;
//alert user that there was a connection issue
DisplayAlert("Warning", "No connection to the server could be established, make sure you are connected to the internet", "ok");
}
});
//gets home page from database
await _viewModel.GetPageAsync(pagename);
//unsubscribe to connection issues
MessagingCenter.Unsubscribe <PageViewModel>(this, "httprequestexception");
}