本文整理汇总了VB.NET中System.Linq.Expressions.Expression.TryCatch方法的典型用法代码示例。如果您正苦于以下问题：VB.NET Expression.TryCatch方法的具体用法？VB.NET Expression.TryCatch怎么用？VB.NET Expression.TryCatch使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类System.Linq.Expressions.Expression的用法示例。
在下文中一共展示了Expression.TryCatch方法的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: DivideByZeroException
' Add the following directive to the file:
' Imports System.Linq.Expressions
' A TryExpression object that has a Catch statement.
' The return types of the Try block and all Catch blocks must be the same.
Dim tryCatchExpr As TryExpression =
Expression.TryCatch(
Expression.Block(
Expression.Throw(Expression.Constant(New DivideByZeroException())),
Expression.Constant("Try block")
),
Expression.Catch(
GetType(DivideByZeroException),
Expression.Constant("Catch block")
)
)
' The following statement first creates an expression tree,
' then compiles it, and then runs it.
' If the exception is caught,
' the result of the TryExpression is the last statement
' of the corresponding Catch statement.
Console.WriteLine(Expression.Lambda(Of Func(Of String))(tryCatchExpr).Compile()())输出：
Catch block