Count(IQueryable,IPredicateDescription) Method

Returns the number of elements in a sequence that satify a condition.

Syntax

Visual Basic
C#

'Declaration
 
<ExtensionAttribute()>
Public Overloads Shared Function Count( _
   ByVal source As IQueryable, _
   ByVal predicateDescription As IPredicateDescription _
) As Integer

'Usage
 
Dim source As IQueryable
Dim predicateDescription As IPredicateDescription
Dim value As Integer
 
value = QueryableExtensions.Count(source, predicateDescription)

[Extension()]
public static int Count( 
   IQueryable source,
   IPredicateDescription predicateDescription
)

Parameters

source
predicateDescription

Example

var mgr1 = new DomainModelEntityManager();

var entityType = typeof(Customer);
var baseQuery = EntityQuery.Create(entityType);
var pd = new PredicateDescription(Customer.EntityPropertyNames.Country, FilterOperator.IsEqualTo, "UK");
var count = baseQuery.Count(pd);

Requirements

Target Platforms: Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

Reference

QueryableExtensions Class
QueryableExtensions Members
Overload List