Func.IsNull(QueryColumnExpression,QueryColumnExpression) - метод Смотри также Terrasoft.Core.DB - пространство имен > Func - класс > IsNull - метод : IsNull(QueryColumnExpression,QueryColumnExpression) - метод C#

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

Glossary Item Box

Gets the function of substituting the null value for the replacement value for the specified expression to check and the replacement expression.

Синтаксис

public static IsNullQueryFunction IsNull( 
   QueryColumnExpression checkExpression, 
   QueryColumnExpression replacementValue 
)

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

Function that substitutes the null value in the checkExpression expression for the replacementValue expression.