async void saveBut_Clicked(System.Object sender, System.EventArgs e)
{
if (ExamType.SelectedIndex == -1)
{
DependencyService.Get <IMessage>().ShortAlert("Select a Type of Exam !");
return;
}
if (Convert.ToInt32(mark.Text) <= 0)
{
DependencyService.Get <IMessage>().ShortAlert("Enter Mark Of Exam");
mark.Focus();
return;
}
if (Hour.Text == "" || Hour.Text == null)
{
DependencyService.Get <IMessage>().ShortAlert("Enter Duration Of The Exam !");
Hour.Focus();
return;
}
if (Detail.Text == "" || Detail.Text == null)
{
DependencyService.Get <IMessage>().ShortAlert("Enter Detail Of The Exam !");
Detail.Focus();
return;
}
if (dt_selectQ.Rows.Count == 0)
{
DependencyService.Get <IMessage>().ShortAlert("Select Question From QuestionBank!");
return;
}
var action = await DisplayAlert("Online Examination", "Update Exam" + " ? ", "Yes", "No");
if (action)
{
saveBut.IsEnabled = false;
var current = Connectivity.NetworkAccess;
if (current == NetworkAccess.Internet)
{
if (CrossConnectivity.Current.IsConnected)
{
try
{
NativeMessageHandler ttk = new NativeMessageHandler {
UseProxy = false
};
HttpClient _client = new HttpClient(ttk);
_client.Timeout = TimeSpan.FromMilliseconds(60000);
string dtt = dateExam.Date.Year.ToString() + "-" + dateExam.Date.Month.ToString() + "-" + dateExam.Date.Day.ToString();
string cont = "?EId=" + ExamView.Eid + "&mark=" + mark.Text + "&q_type=" + ExamType.SelectedIndex.ToString() + "&Des=" + Detail.Text + "&hour=" + Hour.Text + "&dat=" + dtt + "&tim=" + timeExam.Time + "&course_id=" + Course.course_id;
string Url = "https://onlineexamination.a2hosted.com/OnlineExamination/update_Exam.php" + cont;
DataRow[] fr2 = dt_selectQ.Select();
List <SaveAnswer> list = new List <SaveAnswer> {
};
for (int i = 0; i < fr2.Length; i++)
{
list.Add(new SaveAnswer
{
QId = fr2[i]["q_id"].ToString(),
});
}
var myContent = JsonConvert.SerializeObject(list);
_client.DefaultRequestHeaders.Clear();
_client.DefaultRequestHeaders.Add("Accept", "application/json;charset=utf-8");
_client.DefaultRequestHeaders.Add("Accept-Language", "ar");
var request = new HttpRequestMessage()
{
RequestUri = new Uri(Url),
Method = HttpMethod.Post,
};
request.Content = new StringContent(myContent, Encoding.UTF8, "application/json");//CONTENT-TYPE header
var resp = await _client.SendAsync(request);
if (resp.IsSuccessStatusCode)
{
string QuizName = "";
if (ExamType.SelectedIndex >= 0)
{
switch (ExamType.SelectedIndex)
{
case 0:
QuizName = "Test1";
break;
case 1:
QuizName = "Test2";
break;
case 2:
QuizName = "Final";
break;
}
}
string msg = "Update Exam : " + Course.course_name + " / " + QuizName;
send_nav(msg);
await Shell.Current.Navigation.PopAsync();
}
else
{
DependencyService.Get <IMessage>().ShortAlert("تأكد من الاتصال بالانترنت");
}
}
catch (Exception er)
{
string tt = er.Message;
}
}
else
{
DependencyService.Get <IMessage>().ShortAlert("تأكد من الاتصال بالانترنت");
}
}
else
{
DependencyService.Get <IMessage>().ShortAlert("تأكد من الاتصال بالانترنت");
}
saveBut.IsEnabled = true;
}
}