本文整理汇总了VB.NET中System.UnauthorizedAccessException类的典型用法代码示例。如果您正苦于以下问题：VB.NET UnauthorizedAccessException类的具体用法？VB.NET UnauthorizedAccessException怎么用？VB.NET UnauthorizedAccessException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UnauthorizedAccessException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
Module Example
Public Sub Main()
Dim filePath As String = ".\ROFile.txt"
If Not File.Exists(filePath) Then File.Create(filePath)
' Keep existing attributes, and set ReadOnly attribute.
File.SetAttributes(filePath,
(New FileInfo(filePath)).Attributes Or FileAttributes.ReadOnly)
Dim sw As StreamWriter = Nothing
Try
sw = New StreamWriter(filePath)
sw.Write("Test")
Catch e As UnauthorizedAccessException
Dim attr As FileAttributes = (New FileInfo(filePath)).Attributes
Console.Write("UnAuthorizedAccessException: Unable to access file. ")
If (attr And FileAttributes.ReadOnly) > 0 Then
Console.Write("The file is read-only.")
End If
Finally
If sw IsNot Nothing Then sw.Close()
End Try
End Sub
End Module输出：
UnAuthorizedAccessException: Unable to access file. The file is read-only.