本文整理匯總了C#中System.UnauthorizedAccessException類的典型用法代碼示例。如果您正苦於以下問題：C# UnauthorizedAccessException類的具體用法？C# UnauthorizedAccessException怎麽用？C# UnauthorizedAccessException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。
UnauthorizedAccessException類屬於System命名空間，在下文中一共展示了UnauthorizedAccessException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C#代碼示例。
示例1: Main
//引入命名空間
using System;
using System.IO;
public class Example
{
public static void Main()
{
string filePath = @".\ROFile.txt";
if (! File.Exists(filePath))
File.Create(filePath);
// Keep existing attributes, and set ReadOnly attribute.
File.SetAttributes(filePath,
(new FileInfo(filePath)).Attributes | FileAttributes.ReadOnly);
StreamWriter sw = null;
try {
sw = new StreamWriter(filePath);
sw.Write("Test");
}
catch (UnauthorizedAccessException) {
FileAttributes attr = (new FileInfo(filePath)).Attributes;
Console.Write("UnAuthorizedAccessException: Unable to access file. ");
if ((attr & FileAttributes.ReadOnly) > 0)
Console.Write("The file is read-only.");
}
finally {
if (sw != null) sw.Close();
}
}
}輸出：
UnAuthorizedAccessException: Unable to access file. The file is read-only.