Maintaining the state for all controls in datagrid in Silverlight

Question

Hi,

i am developting one question paper. now i want to save the question no and answer in a session using arr aylist. how can i save . in .net i am using this code i stroed both question no and answer . now i want the same code in silverlight. but in silverlight i am not getting both arraylist and sessions . how can i achieve this one.

private void SaveCheckedValues()
{
ArrayList userdetails1 = new ArrayList();
ArrayList userdetails2 = new ArrayList();
ArrayList userdetails3 = new ArrayList();
ArrayList userdetails4 = new ArrayList();

int index = -1;
foreach (GridViewRow gvrow in GV_Questionpaper.Rows)
{
index = (int)GV_Questionpaper.DataKeys[gvrow.RowIndex].Value;
bool result1 = ((RadioButton)gvrow.FindControl("RBtn_Option1")).Checked;
bool result2 = ((RadioButton)gvrow.FindControl("RBtn_Option2")).Checked;
bool result3 = ((RadioButton)gvrow.FindControl("RBtn_Option3")).Checked;
bool result4 = ((RadioButton)gvrow.FindControl("RBtn_Option4")).Checked;

if (Session["CHECKED_ITEMS1"] != null)
{
userdetails1 = (ArrayList)Session["CHECKED_ITEMS1"];
}
if (Session["CHECKED_ITEMS2"] != null)
{
userdetails2 = (ArrayList)Session["CHECKED_ITEMS2"];
}
if (Session["CHECKED_ITEMS3"] != null)
{
userdetails3 = (ArrayList)Session["CHECKED_ITEMS3"];
}
if (Session["CHECKED_ITEMS4"] != null)
{
userdetails4 = (ArrayList)Session["CHECKED_ITEMS4"];
}

if (result1)
{
if (!userdetails1.Contains(index))
userdetails1.Add(index);
}
else
{
userdetails1.Remove(index);
}
if (result2)
{
if (!userdetails2.Contains(index))
userdetails2.Add(index);
}
else
{
userdetails2.Remove(index);
}
if (result3)
{
if (!userdetails3.Contains(index))
userdetails3.Add(index);
}
else
{
userdetails3.Remove(index);
}
if (result4)
{
if (!userdetails4.Contains(index))
userdetails4.Add(index);
}
else
{
userdetails4.Remove(index);
}

Priya Linge · Answer

Hi, Make 1 class named as SessionManager class() as below, Namespace for isolatedstorage : using System.IO.IsolatedStorage; public class SessionManager { public static IsolatedStorageSettings Session = IsolatedStorageSettings.ApplicationSettings; public static Int32 QuestionId { get; set; } public static Int32 AnswerId { get; set; } public SessionManager() { } public SessionManager(int questionId ,Int32 ansId) { QuestionId = questionId ; AnswerId = ansID; Session.Add("questionId", questionId); Session.Add("answeID",ansId ); } public void clearSession() { Session.Clear(); } } Use this class in your applicarion . if (SessionManager.Session.Contains("QuestionId")) It return the boolean value, it check the is their value contain in session. If(checked_items !=null) { new SessionManager(lblquesid.content,ansid); Here you can get the values , suppose quesionID=lable.content,answerID=radiobtn.checked item, store this values in this class. Hope this will help you. Thanks.

nagaraju · Answer

Hi priya, i am new to this technology. i am trying from oneweek for this state issue. i done it in .net using above code . is it possible to maintain state in silverlight using this code. I think u got my requirement can u please tell me how to store the question id and answer for every page with out losing data usign isolated storage settings.

Priya Linge · Answer

Hi, You can strore the values in silverlight with the help of IsoloatedStorageSettings. Silverlight doesnot support the Arraylist. Instead of that it will supports, the following non-generic interfaces . •IEnumerator •IEnumerable •ICollection •IComparer •IDictionary •IDictionaryEnumerator •DictionaryEntry •IEqualityComparer •IList http://msdn.microsoft.com/en-us/library/system.io.isolatedstorage.isolatedstoragesettings(v=vs.95).aspx Hope this will help you. Thanks.

Maintaining the state for all controls in datagrid in Silverlight

Answers (3)