read-write privilege 读写特权
The READ privilege is required to reference a global variable and the WRITE privilege is required to modify the value of a global variable.
READ权限用于引用全局变量，而WRITE权限用于修改全局变量的值。
If you want to show audit information to user who do not have administrator permissions, you must write code to elevate privilege so that your code can succeed.
如果您想给这些没有管理权限的用户显示审计信息，就需要用前一篇文章中代码提升权限的方法，以便使上述代码可以顺利执行。
Cause 2: If you are using the NTFS file format, make sure that "aspnet" has proper privilege on "wwwroot" or your folder for virtual directory to access and write on the folders.
原因2：如果您正在使用NTFS文件系统的话，确保aspnet帐户对于wwwroot或您的应用程序文件夹具有适当的读写权限。
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