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ObjectQuery<T>::Where Method

Limits the query to results that match specified filtering criteria.

Namespace:  System.Data.Objects
Assembly:  System.Data.Entity (in System.Data.Entity.dll)

public:
ObjectQuery<T>^ Where(
	String^ predicate, 
	... array<ObjectParameter^>^ parameters
)

Parameters

predicate
Type: System::String

The filter predicate.

parameters
Type: array<System.Data.Objects::ObjectParameter>

Zero or more parameters that are used in this method.

Return Value

Type: System.Data.Objects::ObjectQuery<T>
A new ObjectQuery<T> instance that is equivalent to the original instance with WHERE applied.

ExceptionCondition
ArgumentNullException

predicate is nullptr.

-or-

parameters is nullptr.

ArgumentException

The predicate is an empty string.

This example is based on the Adventure Works Sales Model. The example creates a new ObjectQuery<T> that contains results of the existing query filtered by the following criteria: "it.ProductID = 900".

No code example is currently available or this language may not be supported.

.NET Framework

Supported in: 4.5.2, 4.5.1, 4.5, 4, 3.5 SP1

.NET Framework Client Profile

Supported in: 4

Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

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