Method DeferredSingle

DeferredSingle<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 "Single" 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<TSource> DeferredSingle<TSource>(this IQueryable<TSource> source)
Parameters
Type Name Description
IQueryable<TSource> source

The System.Linq.IQueryable`1 that contains the elements to be counted.
Returns
Type Description
QueryDeferred<TSource>

The single element of the input sequence.
Type Parameters
Name Description
TSource

The type of the elements of source.

DeferredSingle<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 "Single" 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<TSource> DeferredSingle<TSource>(this IQueryable<TSource> source, Expression<Func<TSource, bool>> predicate)
    where TSource : class
Parameters
Type Name Description
IQueryable<TSource> source

The System.Linq.IQueryable`1 that contains the elements to be counted.
Expression<Func<TSource, System.Boolean>> predicate

A function to test an element for a condition.
Returns
Type Description
QueryDeferred<TSource>

The single element of the input sequence.
Type Parameters
Name Description
TSource

The type of the elements of source.