Answer / kiran

1. InProcSessionStateStore-> which stores session state in memory in the ASP.NET worker process (current server)
2. OutOfProcSessionStateStore-> which stores session state in memory in an external state server process
3. SqlSessionStateStore-> which stores session state in Microsoft SQL Server and Microsoft SQL Server Express databases

Answer / munish

Three of the most important methods in a session state provider are GetItem, GetItemExclusive, and SetAndReleaseItemExclusive. The first two are called by SessionStateModule to retrieve a session from the data source. If the requested page implements the IRequiresSessionState interface (by default, all pages implement IRequiresSessionState), SessionStateModule's AcquireRequestState event handler calls the session state provider's GetItemExclusive method. The word "Exclusive" in the method name means that the session should be retrieved only if it's not currently being used by another request. If, on the other hand, the requested page implements the IReadOnlySessionState interface (the most common way to achieve this is to include an EnableSessionState="ReadOnly" attribute in the page's @ Page directive), SessionStateModule calls the provider's GetItem method. No exclusivity is required here, because overlapping read accesses are permitted by SessionStateModule.

In order to provide the exclusivity required by GetItemExclusive, a session state provider must implement a locking mechanism that prevents a given session from being accessed by two or more concurrent requests requiring read/write access to session state. That mechanism ensures the consistency of session state, by preventing concurrent requests from overwriting each other's changes. The locking mechanism must work even if the session state data source is a remote resource shared by several Web servers.

SessionStateModule reads sessions from the data source at the outset of each request, by calling GetItem or GetItemExclusive from its AcquireRequestState handler. At the end of the request, SessionStateModule's ReleaseRequestState handler calls the session state provider's SetAndReleaseItemExclusive method to commit changes to the data source, and release locks held by GetItemExclusive. A related method named ReleaseItemExclusive exists so that SessionStateModule can time out a locked session by commanding the session state provider to release the lock.

How does session state work in asp.net?

0 Answers  

---

How does Garbage collector(GC) works in .net

14 Answers   Accenture, HCL, Kekran Mekran, People Tech, Wipro,

---

difference between writing connection string in web.config through connection string and appsettings

2 Answers   iSoft,

---

What is autopostback in asp net?

0 Answers  

---

How to disable disable browser's Back button in asp.net (JavaScript)?

0 Answers   HCL,

---

What is the difference between ASP Session State and ASP.Net Session State?

0 Answers  

---

how many select state ments are used in stored procedure?

8 Answers   CSC,

---

What is the answer for "Which configuration Tool your using means" ? we have to tell about IIS or .Net Framework or VSS? Give me in brief ?

3 Answers   eXensys,

---

what is SAP fullform

161 Answers   A3Logics, Amazon, DFD, Federal Mogul, Hol Info, IBM, Infosys, Jai Ganesh, Kesri Metal, Lupin, Microsoft, RPG, SAP Labs, SRS Group, TCS, Videocon,

---

For a server control, you need to have same properties like color maxlength, size, and allowed character throughout the application. How do you handle this?

2 Answers   Microsoft,

---

How do you validate the controls in an ASP .NET page?

3 Answers  

---

What is the difference between file-based dependency and key-based dependency?

0 Answers  

---