Users

// Creates a new user object
UserInfo newUser = new UserInfo();

// Sets the user properties
newUser.FullName = "New user";
newUser.UserName = "NewUser";
newUser.Email = "new.user@domain.com";
newUser.PreferredCultureCode = "en-us";

// Sets the user's privilege level to 'Editor'
newUser.SetPrivilegeLevel(UserPrivilegeLevelEnum.Editor);

// Saves the user to the database
UserInfoProvider.SetUserInfo(newUser);

// Gets the user
UserInfo updateUser = UserInfoProvider.GetUserInfo("NewUser");
if (updateUser != null)
{
	// Updates the user's properties
	updateUser.FullName = updateUser.FullName.ToLowerCSafe();

	// Saves the changes
	UserInfoProvider.SetUserInfo(updateUser);					
}

// Gets all users whose username starts with 'NewUser'
var users = UserInfoProvider.GetUsers().WhereStartsWith("UserName", "NewUser");

// Loops through individual users
foreach (UserInfo modifyUser in users)
{
	// Updates the user properties
	modifyUser.FullName = modifyUser.FullName.ToUpper();

	// Saves the changes
	UserInfoProvider.SetUserInfo(modifyUser);
}

// Gets the user
UserInfo deleteUser = UserInfoProvider.GetUserInfo("NewUser");

if (deleteUser != null)
{
	// Deletes the user
	UserInfoProvider.DeleteUser(deleteUser);
}

UserInfo user = null;

// Attempts to log in to the current site using a username and password
user = AuthenticationHelper.AuthenticateUser("Username", "password", SiteContext.CurrentSiteName);

if (user != null)
{
	// Authentication was successful
}

// Gets the user
UserInfo user = UserInfoProvider.GetUserInfo("NewUser");				

if (user != null)
{
	// Gets the sites to which the user is assigned
	var userSiteIDs = UserSiteInfoProvider.GetUserSites().Column("SiteID").WhereEquals("UserID", user.UserID);
	var sites = SiteInfoProvider.GetSites().WhereIn("SiteID", userSiteIDs);
	
	// Loops through the sites
	foreach (SiteInfo site in sites)
	{													
		// Process the site
	}
}

// Gets the user
UserInfo user = UserInfoProvider.GetUserInfo("NewUser");
if (user != null)
{					
	// Adds the user to the site
	UserInfoProvider.AddUserToSite(user.UserName, SiteContext.CurrentSiteName);
}

// Gets the user
UserInfo removeUser = UserInfoProvider.GetUserInfo("NewUser");
if (removeUser != null)
{
	// Removes the user from the site
	UserInfoProvider.RemoveUserFromSite(removeUser.UserName, SiteContext.CurrentSiteName);
}

// Gets the user
UserInfo user = UserInfoProvider.GetUserInfo("NewUser");

if (user != null)
{
	// Checks whether the user has the Editor privilege level or higher
	if (user.CheckPrivilegeLevel(UserPrivilegeLevelEnum.Editor, SiteContext.CurrentSiteName))
	{
		// Perform an action (the user has the required privilege level)
	}
}

// Gets the user
UserInfo user = UserInfoProvider.GetUserInfo("NewUser");

if (user != null)
{
	// Checks whether the user has the Read permission for the Content module
	if (UserInfoProvider.IsAuthorizedPerResource("CMS.Content", "Read", SiteContext.CurrentSiteName, user))
	{
		// Perform an action (the user has the required module permission)
	}
}

// Gets the user
UserInfo user = UserInfoProvider.GetUserInfo("NewUser");

if (user != null)
{
	// Checks whether the user has the Read permission for the CMS.MenuItem page type
	if (UserInfoProvider.IsAuthorizedPerClass(SystemDocumentTypes.MenuItem, "Read", SiteContext.CurrentSiteName, user))
	{
		// Perform an action (the user is authorized to read CMS.MenuItem page types)
	}
}

// Creates a TreeProvider instance
TreeProvider tree = new TreeProvider(MembershipContext.AuthenticatedUser);

// Gets the Example page
TreeNode page = tree.SelectNodes()
	.Path("/Example")
	.OnCurrentSite()
	.Culture("en-us")
	.FirstObject;

if (page != null)
{
	// Gets the user
	UserInfo user = UserInfoProvider.GetUserInfo("NewUser");

	if (user != null)
	{
		// Checks whether the user is authorized to read the page
		if (user.IsAuthorizedPerTreeNode(page, NodePermissionsEnum.Read) == AuthorizationResultEnum.Allowed)
		{
			// Perform an action (the user is allowed to read the page)
		}
	}
}

string where = "";
int topN = 10;
string orderBy = "";
string location = "";
string siteName = SiteContext.CurrentSiteName;
bool includeHidden = true;
bool includeKicked = false;

// Gets DataSet of online users
DataSet users = SessionManager.GetOnlineUsers(where, orderBy, topN, location, siteName, includeHidden, includeKicked);
if (!DataHelper.DataSourceIsEmpty(users))
{
	// Loops through the online user data
	foreach (DataRow userDr in users.Tables[0].Rows)
	{
		// Creates a user from the DataRow
		UserInfo modifyUser = new UserInfo(userDr);

		// Updates the user's properties
		modifyUser.FullName = modifyUser.FullName.ToUpper();

		// Saves the changes to the database
		UserInfoProvider.SetUserInfo(modifyUser);
	}
}

bool includeHidden = true;

// Gets user and site objects
UserInfo user = UserInfoProvider.GetUserInfo("NewUser");
SiteInfo site = SiteInfoProvider.GetSiteInfo(SiteContext.CurrentSiteName);

if ((user != null) && (site != null))
{
	// Checks if the user is online
	bool userIsOnline = SessionManager.IsUserOnline(site.SiteName, user.UserID, includeHidden);
}

// Gets the user 
UserInfo kickedUser = UserInfoProvider.GetUserInfo("NewUser");

if (kickedUser != null)
{
	// Kicks the user
	SessionManager.KickUser(kickedUser.UserID);
}