Method GetByTag

GetByTag<T>(Tag)

Gets all the cached items with the specified tag.

Declaration
IDictionary<string, T> GetByTag<T>(Tag tag)
Parameters
Type Name Description
Tag tag

Name of tag to search the cache items with.
Returns
Type Description
System.Collections.Generic.IDictionary<System.String, T>

Returns a dictionary containing the cache keys and associated objects with the type specified.
Type Parameters
Name Description
T

Specifies the type of value obtained from the cache.
Examples

The following example demonstrates how to get the objects with the specified tag.

ICache cache = CacheManager.GetCache("demoCache");
Tag tag = new Tag("Sports");
IDictionary<string,Product> result = cache.SearchService.GetByTag<Product>(tag);

GetByTag<T>(String)

Gets all the cached objects with the wild card supported tag.

Declaration
IDictionary<string, T> GetByTag<T>(string wildCardExpression)
Parameters
Type Name Description
System.String wildCardExpression

The wild card Expression to search with.
Returns
Type Description
System.Collections.Generic.IDictionary<System.String, T>

Returns a dictionary containing the cache keys and associated objects with the type specified.
Type Parameters
Name Description
T

Specifies the type of value obtained from the cache.
Remarks

The special characters supported in wild search by NCache are: 1) "*" : Used as a substitute for zero or more characters in the string. 2)"?" : Used as a substitute for a single character in the string.

Examples

The following example demonstrates how to get the objects with the specified tag using wildcard.

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

Following tags are created and items are added in the cache with these tags

Tag[] tags = new Tag[3];
tags[0] = new Tag("Important Customers");
tags[1] = new Tag("East Coast Customers");
tags[2] = new Tag("West Coast Customers");

IDictionary<string, Customer> result = cache.SearchService.GetByTag<Customer>("*Customers");