dotnet security: I would like to check if a user is currently a member of a Local Group on the server. I am able to
do the test for the current user and all is ok, however I would like to be able to take a list of
users from a table in the database and check if the user is in the specified group. is it possible
to take a username (as a string) and create an instance of IPricipal for that user? or achive by any
other method?

Regards

[quoted text, click to view]

The following code returned true if UserName is a member of a Power Users
group.
DirectoryEntry entryRoot = new DirectoryEntry("WinNT://" +
Environment.MachineName + ",computer",
Environment.MachineName +"\\" + SuperUserName, SuperUserPassword,
System.DirectoryServices.AuthenticationTypes.ReadonlyServer);
DirectoryEntry userEntry = entryRoot.Children.Find(UserName, "user");
DirectoryEntry objGroup = entryRoot.Children.Find("Power Users", "group");
bool isMember = (bool)objGroup.Invoke("IsMember", new object[] {
userEntry.Path.ToString() });

SuperUserName is a local user