DataCache.PutAndUnlock Method (String, Object, DataCacheLockHandle, TimeSpan)

Artikkeli
08/26/2011

Replaces and unlocks an object in the cache. Specifies the timeout value of the cached object.

Namespace: Microsoft.ApplicationServer.Caching
Assembly: Microsoft.ApplicationServer.Caching.Client (in microsoft.applicationserver.caching.client.dll)

Usage

'Usage
Dim instance As DataCache
Dim key As String
Dim value As Object
Dim lockHandle As DataCacheLockHandle
Dim timeout As TimeSpan
Dim returnValue As DataCacheItemVersion

returnValue = instance.PutAndUnlock(key, value, lockHandle, timeout)

Syntax

'Declaration
Public Function PutAndUnlock ( _
    key As String, _
    value As Object, _
    lockHandle As DataCacheLockHandle, _
    timeout As TimeSpan _
) As DataCacheItemVersion

public DataCacheItemVersion PutAndUnlock (
    string key,
    Object value,
    DataCacheLockHandle lockHandle,
    TimeSpan timeout
)

public:
DataCacheItemVersion^ PutAndUnlock (
    String^ key, 
    Object^ value, 
    DataCacheLockHandle^ lockHandle, 
    TimeSpan timeout
)

public DataCacheItemVersion PutAndUnlock (
    String key, 
    Object value, 
    DataCacheLockHandle lockHandle, 
    TimeSpan timeout
)

public function PutAndUnlock (
    key : String, 
    value : Object, 
    lockHandle : DataCacheLockHandle, 
    timeout : TimeSpan
) : DataCacheItemVersion

Parameters

key
The unique value that is used to identify the object in the cache.

value
The object to add or replace.

lockHandle
The DataCacheLockHandle object that was returned when the object was locked.

timeout
The amount of time that the object should reside in the cache before expiration.

Return Value

A DataCacheItemVersion object that represents the version of the cached object after it has been updated by this method.

Remarks

Locked objects are never expired, but they may expire immediately if unlocked after their expiration time. For more information, see Expiration and Eviction.

The timeout value associated with the cached object overrides expiration settings specified in the named cache configuration. For more information, see Expiration and Eviction.

If the lockHandle parameter is not equal to the DataCacheLockHandle object obtained from the method that is used to lock the object, a DataCacheException object is thrown with the ErrorCode property set to InvalidCacheLockHandle, and the object is not updated.

Thread Safety

Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.

Platforms

Development Platforms

Visual Studio 2010 and later, .NET Framework 4

Target Platforms

Windows 7; Windows Server 2008 R2; Windows Server 2008 Service Pack 2; Windows Vista Service Pack 2

Jaa