What folder in Windows everyone or IIS User has access to read and write?

Recently i start develop a setup program using asp.net , I want to save some global information on server machine . Registry is a way but IIS User default not write permission. So i think some folders such as "Applicatio开发者_Python百科n Data" can do it,but everyone did not write Permissions.Is there other way to solve this problem?

The temporary folder: %TEMP%. If it is an ASP.NET application you could also use the special App_Data folder.

Any directory which has permissions set to everyone access. Please check this link http://www.microsoft.com/windowsxp/using/networking/security/permissions.mspx

Do not try to figure the temp paths out for yourself. Please use the System.IO.Path.GetTempPath() method.