DataCache::Put Method (String^, Object^, DataCacheItemVersion^, String^)
Adds or replaces an object in the specified region if it is at the specified version. This overload is not supported in Windows Azure Shared Caching.
Assembly: Microsoft.ApplicationServer.Caching.Client (in Microsoft.ApplicationServer.Caching.Client.dll)
public: DataCacheItemVersion^ Put( String^ key, Object^ value, DataCacheItemVersion^ oldVersion, String^ region )
Parameters
- key
-
Type:
System::String^
The unique value that is used to identify the object in the region. Key names must be less than 65 KB.
- value
-
Type:
System::Object^
The object to add or replace.
- oldVersion
-
Type:
Microsoft.ApplicationServer.Caching::DataCacheItemVersion^
The DataCacheItemVersion object that represents the version of the cached object that is to be replaced.
- region
-
Type:
System::String^
The name of the region the object resides in.
Return Value
Type: Microsoft.ApplicationServer.Caching::DataCacheItemVersion^A DataCacheItemVersion object that represents the version of the object saved to the cache under the key value.
By passing the oldVersion parameter, this method can maintain concurrency. If another process updates the cached object before this method is called, this method does not update the cached object and returns null.