Method Contains

Contains(String)

Determines whether the cache contains a specific key.

Declaration

bool Contains(string key)

Parameters

Type	Name	Description
System.String	key	The key to locate in the cache.

Returns

Type	Description
System.Boolean	True, if the ICache contains an element with the specified key; otherwise, false.

Remarks

In most of the cases this method's implementation is close to O(1).

Note: In a partitioned cluster this operation is an expensive one as it might result in network calls. It is therefore advised to use this property only when required.

Examples

The following example demonstrates how to check for containment of an item in the cache.

ICache cache = CacheManager.GetCache("demoClusteredCache");

if(cache.Contains("Product0"))
{
    Console.WriteLine("Item found!");
}

Exceptions

Type	Condition
System.ArgumentNullException	Key contains a null reference.
System.ArgumentException	Key is not serializable.