项目
11/18/2011

IQueryProvider.CreateQuery Method (Expression)

Microsoft Silverlight will reach end of support after October 2021. Learn more.

Constructs an IQueryable object that can evaluate the query represented by a specified expression tree.

Namespace: System.Linq
Assembly: System.Core (in System.Core.dll)

Syntax

'Declaration
Function CreateQuery ( _
    expression As Expression _
) As IQueryable

IQueryable CreateQuery(
    Expression expression
)

Parameters

expression
Type: System.Linq.Expressions.Expression
An expression tree that represents a LINQ query.

Return Value

Type: System.Linq.IQueryable
An IQueryable that can evaluate the query represented by the specified expression tree.

Remarks

Note:
The Expression property of the returned IQueryable object is equal to expression.

The CreateQuery method is used to create new IQueryable objects, given an expression tree. The query that is represented by the returned object is associated with a specific LINQ provider.

Several of the standard query operator methods defined in Queryable, such as OfType<TResult> and Cast<TResult>, call this method. They pass it a MethodCallExpression that represents a LINQ query.

Version Information

Silverlight

Supported in: 5, 4, 3

Silverlight for Windows Phone

Supported in: Windows Phone OS 7.1

Platforms

For a list of the operating systems and browsers that are supported by Silverlight, see Supported Operating Systems and Browsers.

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