using System.Data;

using CMS.CMSHelper;

...

        string where = "UserID > 53";

        int topN = 10;

        string orderBy = "UserName";

        string columns = "UserName, Email";

        // Only users accessing the specified location (alias path) will be selected

        string location = "/Home";

        string siteName = "CorporateSite";

        bool includeHidden = true;

        bool includeKicked = false;

        // Get DataSet of online users according to the given parameters

      DataSet ds = SessionManager.GetOnlineUsers(where, orderBy, topN, location, siteName, includeHidden, includeKicked);

      DataSet ds2 = SessionManager.GetOnlineUsers(where, orderBy, topN, columns, location, siteName, includeHidden, includeKicked);