IsNullQueryFunction (IQueryColumnExpressionConvertible,IQueryColumnExpressionConvertible) - конструктор Смотри также Terrasoft.Core.DB - пространство имен > IsNullQueryFunction - класс > IsNullQueryFunction : IsNullQueryFunction (IQueryColumnExpressionConvertible,IQueryColumnExpressionConvertible) C#

replacementExpression: Expression returned by the function if checkExpression is equal to null.

Glossary Item Box

Initializes a new IsNullQueryFunction instance for the specified check expression and the placeholder expression.

Синтаксис

public IsNullQueryFunction( 
   IQueryColumnExpressionConvertible checkExpression, 
   IQueryColumnExpressionConvertible replacementExpression 
)

checkExpression: Expression to check for being equal to null.
replacementExpression: Expression returned by the function if checkExpression is equal to null.

Исключение	Описание
System.ArgumentNullException	If the `null` value is passed as either the checkExpression or the replacementExpression parameter.