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QueryExpression Class

Retrieves instances of a specific entity type by using a complex query.


Namespace:  System.Web.UI.WebControls.Expressions
Assembly:  System.Web.Extensions (in System.Web.Extensions.dll)

public class QueryExpression

The QueryExpression type exposes the following members.

Public methodQueryExpressionInitializes new instance of the QueryExpression class.

Public propertyExpressionsGets the collection of expressions in the query.

Public methodEquals(Object)Determines whether the specified Object is equal to the current Object. (Inherited from Object.)
Protected methodFinalizeAllows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection. (Inherited from Object.)
Public methodGetHashCodeServes as a hash function for a particular type. (Inherited from Object.)
Public methodGetQueryableResolves the expression by using the specified IQueryable data source control.
Public methodGetTypeGets the Type of the current instance. (Inherited from Object.)
Public methodInitializeInitializes the QueryExpression object by using the specified owner control, a HttpContext instance, and IQueryableDataSource object.
Protected methodMemberwiseCloneCreates a shallow copy of the current Object. (Inherited from Object.)
Public methodToStringReturns a string that represents the current object. (Inherited from Object.)

Data source controls that derive from IQueryableDataSource expose the data source query that enables you to create LINQ queries declaratively. You can create new expressions by deriving from DataSourceExpression.

.NET Framework

Supported in: 4

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

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

Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.