Method DeferredAny

DeferredAny<TSource>(IQueryable<TSource>)

This method is the deferred implementation of the extension method . In EF some linq operations are performed on the client end instead of the server. Therefore, if we use the regular method it will cache the data from the database before performing the actual "Any" operation. To cater to this, we provide with a deferred implementation that delays the caching so that only the result can be cached.

Declaration
public static QueryDeferred<bool> DeferredAny<TSource>(this IQueryable<TSource> source)
Parameters
Type Name Description
IQueryable<TSource> source

A sequence to check for being empty.
Returns
Type Description
QueryDeferred<System.Boolean>

true if the source sequence contains any elements; otherwise, false.
Type Parameters
Name Description
TSource

The type of the elements of source.

DeferredAny<TSource>(IQueryable<TSource>, Expression<Func<TSource, Boolean>>)

This method is the deferred implementation of the extension method . In EF some linq operations are performed on the client end instead of the server. Therefore, if we use the regular method it will cache the data from the database before performing the actual "Any" operation. To cater to this, we provide with a deferred implementation that delays the caching so that only the result can be cached.

Declaration
public static QueryDeferred<bool> DeferredAny<TSource>(this IQueryable<TSource> source, Expression<Func<TSource, bool>> predicate)
Parameters
Type Name Description
IQueryable<TSource> source

A sequence whose elements to test for a condition.
Expression<Func<TSource, System.Boolean>> predicate

A function to test each element for a condition.
Returns
Type Description
QueryDeferred<System.Boolean>

true if any elements in the source sequence pass the test in the specified predicate; otherwise, false.
Type Parameters
Name Description
TSource

The type of the elements of source.