本文整理匯總了VB.NET中System.Linq.Expressions.Expression.OrElse方法的典型用法代碼示例。如果您正苦於以下問題：VB.NET Expression.OrElse方法的具體用法？VB.NET Expression.OrElse怎麽用？VB.NET Expression.OrElse使用的例子？那麽, 這裏精選的方法代碼示例或許可以為您提供幫助。您也可以進一步了解該方法所在類System.Linq.Expressions.Expression的用法示例。
在下文中一共展示了Expression.OrElse方法的1個代碼示例，這些例子默認根據受歡迎程度排序。您可以為喜歡或者感覺有用的代碼點讚，您的評價將有助於係統推薦出更棒的VB.NET代碼示例。
示例1: Func
' Add the following directive to your file:
' Imports System.Linq.Expressions
' This expression perfroms a logical OR operation
' on its two arguments, but if the first argument is true,
' the second arument is not evaluated.
' Both arguments must be of the Boolean type.
Dim orElseExpr As Expression = Expression.OrElse(
Expression.Constant(False),
Expression.Constant(True)
)
' Print the expression.
Console.WriteLine(orElseExpr.ToString())
' The following statement first creates an expression tree,
' then compiles it, and then executes it.
Console.WriteLine(Expression.Lambda(Of Func(Of Boolean))(orElseExpr).Compile()())輸出：
(False OrElse True) True