本文整理汇总了VB.NET中System.AggregateException类的典型用法代码示例。如果您正苦于以下问题：VB.NET AggregateException类的具体用法？VB.NET AggregateException怎么用？VB.NET AggregateException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AggregateException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: Example
' 导入命名空间
Imports System.IO
Imports System.Threading.Tasks
Module Example
Sub Main()
' Get a folder path whose directories should throw an UnauthorizedAccessException.
Dim path As String = Directory.GetParent(
Environment.GetFolderPath(
Environment.SpecialFolder.UserProfile)).FullName
' Use this line to throw UnauthorizedAccessException, which we handle.
Dim task1 = Task(Of String()).Factory.StartNew(Function() GetAllFiles(path))
' Use this line to throw an exception that is not handled.
' Task task1 = Task.Factory.StartNew(Sub() Throw New IndexOutOfRangeException() )
Try
task1.Wait()
Catch ae As AggregateException
ae.Handle(Function(x)
If TypeOf (x) Is UnauthorizedAccessException Then ' This we know how to handle
Console.WriteLine("You do not have permission to access all folders in this path.")
Console.WriteLine("See your network administrator or try another path.")
Return True
Else
Return False ' Let anything else stop the application.
End If
End Function)
End Try
Console.WriteLine("task1 Status: {0}{1}", If(task1.IsCompleted, "Completed,", ""),
task1.Status)
End Sub
Function GetAllFiles(ByVal str As String) As String()
' Should throw an UnauthorizedAccessException exception.
Return System.IO.Directory.GetFiles(str, "*.txt", System.IO.SearchOption.AllDirectories)
End Function
End Module