GroupDescriptorBase.CreateGroupKeyExpression Method

GroupDescriptorBaseCreateGroupKeyExpression Method

Creates a group expression by delegating its creation to CreateGroupKeyExpression(ParameterExpression), if itemExpression is ParameterExpression, otherwise throws ArgumentException

Namespace: Kettic.AspNet.Data
Assembly: Kettic.AspNet.Controls (in Kettic.AspNet.Controls.dll) Version: 2014.4.1129.0 (2014.04.1129.0)

Syntax

C++

Copy

public virtual Expression CreateGroupKeyExpression(
	Expression itemExpression
)

Public Overridable Function CreateGroupKeyExpression ( 
	itemExpression As Expression
) As Expression

public:
virtual Expression^ CreateGroupKeyExpression(
	Expression^ itemExpression
)

abstract CreateGroupKeyExpression : 
        itemExpression : Expression -> Expression 
override CreateGroupKeyExpression : 
        itemExpression : Expression -> Expression

Parameters

itemExpression: Type: System.Linq.ExpressionsExpression
The instance expression, which will be used for grouping.

Return Value

Type: Expression
Expression that creates group key for the given item.

Implements

IGroupDescriptorCreateGroupKeyExpression(Expression)

Exceptions

Exception	Condition
ArgumentException	Parameter should be of type ParameterExpression

Reference

GroupDescriptorBase Class

Kettic.AspNet.Data Namespace