本文整理匯總了VB.NET中System.AggregateException類的典型用法代碼示例。如果您正苦於以下問題：VB.NET AggregateException類的具體用法？VB.NET AggregateException怎麽用？VB.NET AggregateException使用的例子？那麽, 這裏精選的類代碼示例或許可以為您提供幫助。
在下文中一共展示了AggregateException類的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: Example
' 導入命名空間
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