How to get SharePoint user profile information from Account Name

using Microsoft.Office.Server;
using Microsoft.Office.Server.UserProfiles;

private string GetPreferredName(string accountName)
{
    SPSite site = SPContext.Current.Web.Site;
    ServerContext context = ServerContext.GetContext(site);
    UserProfileManager profileManager = new UserProfileManager(context);
    try
    {
          UserProfile profile = profileManager.GetUserProfile(accountName);
          return profile[PropertyConstants.PreferredName].ToString();
    }
    catch
    {
         return accountName;
    }
}