static public string serialize_questions(List <Question> questions)
{
string Result = questions.Count.ToString() + "~";
for (int i = 0; i < questions.Count; i++)
{
if (questions.ElementAt(i) is Text_Question)
{
Result += Serializable_Questions.serialize_TextQuestion((Text_Question)questions.ElementAt(i));
}
//else if(questions.ElementAt(i) is DropDown)
//{
// Result += Serializable_Questions.serialize_DropDown((DropDown)questions.ElementAt(i));
//}
else if (questions.ElementAt(i) is Slider_Question)
{
Result += Serializable_Questions.serialize_Slider((Slider_Question)questions.ElementAt(i));
}
else if (questions.ElementAt(i) is Multible)
{
Result += Serializable_Questions.serialize_MultiChoice((Multible)questions.ElementAt(i));
}
}
return(Result);
}
static public ObservableCollection <Survey> deserialize(string Content)
{
ObservableCollection <Survey> surveys = new ObservableCollection <Survey>();
List <Question> questions = new List <Question>();
int iter = 0;
char i = Content[iter];
string count_surveys = "";
while (i != '~')
{
count_surveys += i.ToString();
iter++;
i = Content[iter];
}
int Count_Surveys = Int32.Parse(count_surveys);
for (int j = 0; j < Count_Surveys; j++)
{
string count_questions = "";
string id = "";
questions = new List <Question>();
iter++;
i = Content[iter];
while (i != '~')
{
id += i.ToString();
iter++;
i = Content[iter];
}
iter++;
i = Content[iter];
while (i != '~')
{
count_questions += i.ToString();
iter++;
i = Content[iter];
}
int Count_Questions = Int32.Parse(count_questions);
for (int k = 0; k < Count_Questions; k++)
{
iter++;
i = Content[iter];
string typequestion = "";
while (i != '~')
{
typequestion += i.ToString();
iter++;
i = Content[iter];
}
if (typequestion.Contains("Text"))
{
KeyValuePair <Text_Question, int> Pair = Serializable_Questions.deserialize_Text_Question(Content, iter);
questions.Add(Pair.Key);
iter = Pair.Value;
}
else if (typequestion.Contains("Multible") || typequestion.Contains("MultiChoice") || typequestion.Contains("DropDown"))
{
KeyValuePair <Multible, int> Pair = Serializable_Questions.deserialize_MultibleChoice(Content, iter, typequestion);
questions.Add(Pair.Key);
iter = Pair.Value;
}
//else if (typequestion.Contains("DropDown"))
//{
// KeyValuePair<DropDown, int> Pair = Serializable_Questions.deserialize_DropDown(Content, iter);
// questions.Add(Pair.Key);
// iter = Pair.Value;
//}
else if (typequestion.Contains("Slider"))
{
KeyValuePair <Slider_Question, int> Pair = Serializable_Questions.deserialize_Slider(Content, iter);
questions.Add(Pair.Key);
iter = Pair.Value;
}
//else if (typequestion.Contains("TextDescription"))
//{
// Question question = new Question(TypeQuestion.TextDescription, Int32.Parse(id));
// questions.Add(question);
//}
}
iter++;
i = Content[iter];
string user = "";
string title = "";
string description = "";
string date_publish = "";
string number_of = "";
string type = "";
while (i != '~')
{
user += i.ToString();
iter++;
i = Content[iter];
}
iter++;
i = Content[iter];
while (i != '~')
{
title += i.ToString();
iter++;
i = Content[iter];
}
iter++;
i = Content[iter];
while (i != '~')
{
description += i.ToString();
iter++;
i = Content[iter];
}
iter++;
i = Content[iter];
while (i != '~')
{
number_of += i.ToString();
iter++;
i = Content[iter];
}
iter++;
i = Content[iter];
while (i != '~')
{
type += i.ToString();
iter++;
i = Content[iter];
}
iter++;
i = Content[iter];
while (i != '~')
{
date_publish += i.ToString();
iter++;
i = Content[iter];
}
Survey survey = new Survey(questions, user, title, description, date_publish);
survey.Id = Int32.Parse(id);
survey.Number_of_Participants = Int32.Parse(number_of);
TypeSurvey _type = TypeSurvey.Education;
if (type.Equals("Sport"))
{
_type = TypeSurvey.Sport;
}
else if (type.Equals("Marketing"))
{
_type = TypeSurvey.Marketing;
}
else if (type.Equals("Other"))
{
_type = TypeSurvey.Other;
}
survey.type_Property = _type;
surveys.Add(survey);
}
return(surveys);
}
