错误:mscorlib.dll 中出现“System.UnauthorizedAccessException"类型的未处理异常

Error: An unhandled exception of type #39;System.UnauthorizedAccessException#39; occurred in mscorlib.dll(错误:mscorlib.dll 中出现“System.UnauthorizedAccessException类型的未处理异常)

问题描述

这是当我尝试将文件复制到某个位置时崩溃并给我这个错误的部分.

This is the part that crashes and gives me this error is when I try to copy a file to a certain location.

string startupDirectory = "C:\Users\Tyler\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup";
File.Copy(startupDirectory, "Startup.exe");

我已经在线阅读并尝试了管理员权限并创建了一个app.manifest"文件:

I have read online and tried administrator rights and have created an "app.manifest" file:

<requestedExecutionLevel  level="requireAdministrator" uiAccess="false" />
<requestedExecutionLevel level="highestAvailable" uiAccess="false" />

我确认在设置中，应用清单设置为这个文件，但它仍然给我同样的错误.

I confirmed that in the settings, the app manifest is set to this file, but it still gives me the same error.

我也尝试过这个事件，但我认为它不会起作用，因为它是一个目录而不是文件:

I have also tried this event though I didn't think it would work because it is a directory not a file:

File.SetAttributes(startupDirectory, FileAttributes.Normal);

这是 WinForms，我使用的是 Windows 7，但也希望它适用于 Windows 8+.我该怎么做?

This is WinForms and I am on windows 7 but also want it to world for windows 8+. How do I do this?

提前致谢！

推荐答案

试试

public static void Copy(string sourceFileName, string destFileName);

第一个重载是源第二个重载是目标我认为原因可能是这个

First overload is source 2nd overload is destination i think reason might be this

File.Copy("Startup.exe",startupDirectory);

尝试将您正在读取/保存文件的 .Net 用户的访问权限设置为完全控制".

Try setting the access permissions to "Full control" for the .Net user from where you are reading/saving the files.

对于特定文件的 IIS 服务器中的访问被拒绝错误，请按照以下步骤操作

For Access Denied Error in IIS server for particular file , please follow the below steps

1- Goto to C:\Users\Tyler\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup

2- Right click on your file -> Properties -> Pop Up of User properties appears -> click on Security tab-> click on Edit -> select Users-> tick on Allow Full Control -> Click Ok

这肯定会解决访问被拒绝的问题

This will surely solve the Access denied problem

UnauthorizedAccessException 意味着以下三件事之一:

An UnauthorizedAccessException means one of 3 things:

• 调用者没有所需的权限.
• path 是一个目录.
• path 指定了一个只读文件.

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