SessionStateItemCollection Class
A collection of objects stored in session state. This class cannot be inherited.
System.Collections.Specialized::NameObjectCollectionBase
System.Web.SessionState::SessionStateItemCollection
Assembly: System.Web (in System.Web.dll)
The SessionStateItemCollection type exposes the following members.
| Name | Description | |
|---|---|---|
![]() | Count | Gets the number of key/value pairs contained in the NameObjectCollectionBase instance. (Inherited from NameObjectCollectionBase.) |
![]() | Dirty | Gets or sets a value indicating whether the collection has been marked as changed. |
![]() | IsReadOnly | Gets or sets a value indicating whether the NameObjectCollectionBase instance is read-only. (Inherited from NameObjectCollectionBase.) |
![]() | Item[Int32] | Gets or sets a value in the collection by numerical index. |
![]() | Item[String] | Gets or sets a value in the collection by name. |
![]() | Keys | Gets a collection of the variable names for all values stored in the collection. (Overrides NameObjectCollectionBase::Keys.) |
| Name | Description | |
|---|---|---|
![]() | BaseAdd | Adds an entry with the specified key and value into the NameObjectCollectionBase instance. (Inherited from NameObjectCollectionBase.) |
![]() | BaseClear | Removes all entries from the NameObjectCollectionBase instance. (Inherited from NameObjectCollectionBase.) |
![]() | BaseGet(Int32) | Gets the value of the entry at the specified index of the NameObjectCollectionBase instance. (Inherited from NameObjectCollectionBase.) |
![]() | BaseGet(String) | Gets the value of the first entry with the specified key from the NameObjectCollectionBase instance. (Inherited from NameObjectCollectionBase.) |
![]() | BaseGetAllKeys | Returns a String array that contains all the keys in the NameObjectCollectionBase instance. (Inherited from NameObjectCollectionBase.) |
![]() | BaseGetAllValues() | Returns an Object array that contains all the values in the NameObjectCollectionBase instance. (Inherited from NameObjectCollectionBase.) |
![]() | BaseGetAllValues(Type) | Returns an array of the specified type that contains all the values in the NameObjectCollectionBase instance. (Inherited from NameObjectCollectionBase.) |
![]() | BaseGetKey | Gets the key of the entry at the specified index of the NameObjectCollectionBase instance. (Inherited from NameObjectCollectionBase.) |
![]() | BaseHasKeys | Gets a value indicating whether the NameObjectCollectionBase instance contains entries whose keys are not nullptr. (Inherited from NameObjectCollectionBase.) |
![]() | BaseRemove | Removes the entries with the specified key from the NameObjectCollectionBase instance. (Inherited from NameObjectCollectionBase.) |
![]() | BaseRemoveAt | Removes the entry at the specified index of the NameObjectCollectionBase instance. (Inherited from NameObjectCollectionBase.) |
![]() | BaseSet(Int32, Object) | Sets the value of the entry at the specified index of the NameObjectCollectionBase instance. (Inherited from NameObjectCollectionBase.) |
![]() | BaseSet(String, Object) | Sets the value of the first entry with the specified key in the NameObjectCollectionBase instance, if found; otherwise, adds an entry with the specified key and value into the NameObjectCollectionBase instance. (Inherited from NameObjectCollectionBase.) |
![]() | Clear | Removes all values and keys from the session-state collection. |
![]() ![]() | Deserialize | Creates a SessionStateItemCollection collection from a storage location that is written to using the Serialize method. |
![]() | Equals(Object) | Determines whether the specified Object is equal to the current Object. (Inherited from Object.) |
![]() | Finalize | Allows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection. (Inherited from Object.) |
![]() | GetEnumerator | Returns an enumerator that can be used to read all the key names in the collection. (Overrides NameObjectCollectionBase::GetEnumerator().) |
![]() | GetHashCode | Serves as a hash function for a particular type. (Inherited from Object.) |
![]() | GetObjectData | Implements the ISerializable interface and returns the data needed to serialize the NameObjectCollectionBase instance. (Inherited from NameObjectCollectionBase.) |
![]() | GetType | Gets the Type of the current instance. (Inherited from Object.) |
![]() | MemberwiseClone | Creates a shallow copy of the current Object. (Inherited from Object.) |
![]() | OnDeserialization | Implements the ISerializable interface and raises the deserialization event when the deserialization is complete. (Inherited from NameObjectCollectionBase.) |
![]() | Remove | Deletes an item from the collection. |
![]() | RemoveAt | Deletes an item at a specified index from the collection. |
![]() | Serialize | Writes the contents of the collection to a BinaryWriter. |
![]() | ToString | Returns a string that represents the current object. (Inherited from Object.) |
| Name | Description | |
|---|---|---|
![]() | AsParallel | Enables parallelization of a query. (Defined by ParallelEnumerable.) |
![]() | AsQueryable | Converts an IEnumerable to an IQueryable. (Defined by Queryable.) |
![]() | Cast<TResult> | Converts the elements of an IEnumerable to the specified type. (Defined by Enumerable.) |
![]() | OfType<TResult> | Filters the elements of an IEnumerable based on a specified type. (Defined by Enumerable.) |
| Name | Description | |
|---|---|---|
![]() ![]() | ICollection::CopyTo | Copies the entire NameObjectCollectionBase to a compatible one-dimensional Array, starting at the specified index of the target array. (Inherited from NameObjectCollectionBase.) |
![]() ![]() | ICollection::IsSynchronized | Gets a value indicating whether access to the NameObjectCollectionBase object is synchronized (thread safe). (Inherited from NameObjectCollectionBase.) |
![]() ![]() | ICollection::SyncRoot | Gets an object that can be used to synchronize access to the NameObjectCollectionBase object. (Inherited from NameObjectCollectionBase.) |
The SessionStateItemCollection class is used to manage session-state variable values indexed by a variable name or by numerical index. The session-state variables are exposed to ASP.NET application code using the HttpSessionState class, which is accessed using the Session property of the current HttpContext or the Page. The HttpSessionState class calls the HttpSessionStateContainer class, which manages session-state variable values using the SessionStateItemCollection.
Notes to ImplementersWhen you create a custom session-state provider based on the SessionStateStoreProviderBase class, use the SessionStateItemCollection class to manage the items stored in session state. If you need to create a custom object to manage session-state items, implement the ISessionStateItemCollection interface.
Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2
The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.








