public void RemoveExamInfo(ExamFileInfo info)
{
ExamFileCatalogueInfo examCatalogue;
using (IsolatedStorageFileStream isoStream = new IsolatedStorageFileStream("examCatalogue.json", FileMode.Open, _isolatedStorageFile))
{
using (StreamReader reader = new StreamReader(isoStream))
examCatalogue = JsonConvert.DeserializeObject <ExamFileCatalogueInfo>(reader.ReadToEnd());
}
int index = -1;
for (int i = 0; i < examCatalogue.ExamFileInfos.Count; i++)
{
if (examCatalogue.ExamFileInfos[0].Id.Equals(info.Id))
{
index = i;
break;
}
}
if (index > -1)
{
examCatalogue.ExamFileInfos.RemoveAt(index);
}
_isolatedStorageFile.DeleteFile("examCatalogue.json");
using (IsolatedStorageFileStream isoStream = new IsolatedStorageFileStream("examCatalogue.json", FileMode.CreateNew, _isolatedStorageFile))
{
using (StreamWriter writer = new StreamWriter(isoStream))
writer.Write(JsonConvert.SerializeObject(examCatalogue));
}
}
public Exam LoadExam(ExamFileInfo examInfo)
{
if (File.Exists(examInfo.Path))
{
return(JsonConvert.DeserializeObject <Exam>(File.ReadAllText(examInfo.Path)));
}
return(null);
}
public void BeginExam(ExamFileInfo examInfo)
{
ExamSession session = _uiManager.ShowExamConfigurationView(examInfo);
if (session != null)
{
BeginExamSession(session);
}
OnExamCompleted?.Invoke(null, session == null ? ExamOutcome.NotStarted : ExamOutcome.Completed);
}
public ExamSession ShowExamConfigurationView(ExamFileInfo examInfo)
{
Exam exam = _storageManager.LoadExam(examInfo);
_examConfigurationView.ShowDialog(Application.OpenForms[0], exam);
if (_examConfigurationView.CustomCloseReason == CustomCloseReason.ok)
{
return(_examConfigurationView.ExamSession);
}
return(null);
}
