zxing barcode generator example c# NTFS permissions in C#.NET

Generator QR in C#.NET NTFS permissions

If your local account has the same user name and nonblank password as an account on the sharing computer, you re authenticated using that account and therefore have the access privileges granted to that account. If your local account does not match one on the sharing computer, you re authenticated as Guest and therefore have only the access privileges explicitly granted to Everyone or Guest. (If the Guest account is disabled on the sharing computer, only users with an account matching a local account can connect.)

If you re presented with a dialog box like the one shown in Figure 25-11, enter the user name and password of an account that has been granted the permissions you need. If the account you want to use is a local account on the sharing computer (always the case in a workgroup), enter the user name in the form computername\username (for example, GLACIER\Jan). To use a domain user account, use the form domain\username if your computer is not joined to the domain; if your computer is joined to the domain, you can enter the user name alone. If you receive an access denied error message instead of a user name request, you ll need to add an entry to your stored network passwords. (You can do this only if you re running Windows XP Professional.) In Control Panel, open User Accounts and, if necessary, click your name to make changes for your account. Under Related Tasks, click Manage My Network Passwords, click Add, and then provide the requested information. (If your computer is joined to a domain, the path to Stored User Names And Passwords is slightly different: In User Accounts, click the Advanced tab and then click Manage Passwords.) You might need to log off and log on before you can access the shared folder.

Click to add credentials for a network computer Type the name of the computer to provide the same credentials for all shared folders on a computer or append the shared folder name to provide credentials for a particular folder

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These versions rely on passwords to protect shared resources; they don t care what user provides the password.

When a folder is shared, it can be protected with a password for readonly access, a password for full access, both, or neither. Any network user can open any shared folder simply by doubleclicking its icon in Windows Explorer. If the password for your user account matches the password assigned to the folder, the folder opens immediately. If not, Windows asks you to provide the password in a dialog box like the one shown in Figure 25-11 on page 927. You don t need to provide a user name; that box is disabled.

Mapping a network folder makes it appear to Windows as though the folder is part of your own computer. Windows assigns the mapped folder a drive letter, making the folder appear like an additional hard drive. You can still access a mapped folder in the conventional manner, by navigating to it through My Network Places. But mapping gives the folder an alias the assigned drive letter that provides an alternative means of access. In general, drive mapping is obsolete, having been supplanted by improvements in and greater reliance on My Network Places. But mapping still offers benefits in some situations:

It makes the network folder available to programs that don t use the Windows com-

mon dialog boxes. With programs that use the common dialog boxes, you can navigate to network folders just as you would with My Network Places. But to read a document from, or save a document to, a network folder using earlier programs, you will probably need to map the folder to a drive letter.