DbExpressionBuilder.AggregateDistinct(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 that is applied in a distinct fashion.

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

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

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

<Extension()>
Public Function AggregateDistinct (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 true.

Exceptions

ArgumentNullException

function or argument is 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