DbExpressionBuilder.Aggregate(EdmFunction, DbExpression) Method

Reference

Definition

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

Assembly:: System.Data.Entity.dll

Important

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Creates a new DbFunctionAggregate.

public:
[System::Runtime::CompilerServices::Extension]
 static System::Data::Common::CommandTrees::DbFunctionAggregate ^ Aggregate(System::Data::Metadata::Edm::EdmFunction ^ function, System::Data::Common::CommandTrees::DbExpression ^ argument);

public static System.Data.Common.CommandTrees.DbFunctionAggregate Aggregate(this System.Data.Metadata.Edm.EdmFunction function, System.Data.Common.CommandTrees.DbExpression argument);

static member Aggregate : System.Data.Metadata.Edm.EdmFunction * System.Data.Common.CommandTrees.DbExpression -> System.Data.Common.CommandTrees.DbFunctionAggregate

<Extension()>
Public Function Aggregate (function As EdmFunction, argument As DbExpression) As DbFunctionAggregate

Parameters

function: EdmFunction

The function that defines the aggregate operation.

argument: DbExpression

The argument over which the aggregate function should be calculated.

Returns

DbFunctionAggregate

A new function aggregate with a reference to the given function and argument. The function aggregate's Distinct property will have the value false.

Exceptions

ArgumentNullException

function or argument null.

ArgumentException

function is not an aggregate function or has more than one argument, or the result type of argument is not equal or promotable to the parameter type of function.

Applies to

Продукт	Версии
.NET Framework	4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8, 4.8.1

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