DbExpressionBuilder.Where Method

Reference

Definition

Namespace:: System.Data.Common.CommandTrees.ExpressionBuilder

Assembly:: System.Data.Entity.dll

Important

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Creates a new DbFilterExpression that filters the elements in the given input set using the specified predicate.

public:
[System::Runtime::CompilerServices::Extension]
 static System::Data::Common::CommandTrees::DbFilterExpression ^ Where(System::Data::Common::CommandTrees::DbExpression ^ source, Func<System::Data::Common::CommandTrees::DbExpression ^, System::Data::Common::CommandTrees::DbExpression ^> ^ predicate);

public static System.Data.Common.CommandTrees.DbFilterExpression Where (this System.Data.Common.CommandTrees.DbExpression source, Func<System.Data.Common.CommandTrees.DbExpression,System.Data.Common.CommandTrees.DbExpression> predicate);

static member Where : System.Data.Common.CommandTrees.DbExpression * Func<System.Data.Common.CommandTrees.DbExpression, System.Data.Common.CommandTrees.DbExpression> -> System.Data.Common.CommandTrees.DbFilterExpression

<Extension()>
Public Function Where (source As DbExpression, predicate As Func(Of DbExpression, DbExpression)) As DbFilterExpression

Parameters

source: DbExpression

An expression that specifies the input set.

predicate: Func<DbExpression,DbExpression>

A method representing the predicate to evaluate for each member of the input set. This method must produce an expression with a Boolean result type that provides the predicate logic.

Returns

DbFilterExpression

A new DbQuantifierExpression that represents the Any operation.

Exceptions

ArgumentNullException

source or predicate is null.

-or-

The expression produced by predicate is null.

ArgumentException

The expression produced by predicate does not have a Boolean result type.

Applies to

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