本文整理汇总了VB.NET中System.Linq.Expressions.Expression<TDelegate>类的典型用法代码示例。如果您正苦于以下问题：VB.NET Expression<TDelegate>类的具体用法？VB.NET Expression<TDelegate>怎么用？VB.NET Expression<TDelegate>使用的例子？那么恭喜您, 这里精选的类代码示例或许可以为您提供帮助。
在下文中一共展示了Expression<TDelegate>类的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的VB.NET代码示例。
示例1: Func
' Lambda expression as executable code.
Dim deleg As Func(Of Integer, Boolean) = Function(ByVal i) i < 5
' Invoke the delegate and display the output.
MsgBox(String.Format("deleg(4) = {0}", deleg(4)))
' Lambda expression as data in the form of an expression tree.
Dim expr As System.Linq.Expressions.Expression(Of Func(Of Integer, Boolean)) = Function(ByVal i) i < 5
' Compile the expression tree into executable code.
Dim deleg2 As Func(Of Integer, Boolean) = expr.Compile()
' Invoke the method and print the output.
MsgBox(String.Format("deleg2(4) = {0}", deleg2(4)))输出：
deleg(4) = True deleg2(4) = True