To sort a generic list, the sort function must have something to compare. This is easily done like this:

List<ListItem> myList = new List<ListItem>();
myList.Sort((x, y) => string.Compare(x.Name, y.Name));

(reference: user Randy in thread: http://stackoverflow.com/questions/222572/sorting-a-dropdownlist-c-asp-net)

You can set a new password via the default membership provider without having the old one. It looks like this:

MembershipUser user = Membership.GetUser("username");
user.ChangePassword(user.resetPassword(), newPassword);

The clue is to retrieve the "old" password by using the resetPassword() functionality. To be able to do it like this, enablePasswordReset should be set to "true" in the .config file

There is a very simple way to determin if the current user is logged in/authenticated. It looks like this:

HttpContext.Current.User.Identity.IsAuthenticated

You will find HttpContext directly under System.Web.

I wanted to fill up a drop down list with countries and country codes and found out that I could use CultureInfo and RegionInfo to do this. Here is the code:

CultureInfo[]cultures = CultureInfo.GetCultures(CultureTypes.SpecificCultures);
SortedDictionary<string,string> regionLookup = new SortedDictionary<string, string>(StringComparer.Ordinal);

foreach (CultureInfocultInfo in cultures)
{
  RegionInfo regionInfo = newRegionInfo(cultInfo.LCID);
  if(!regionLookup.ContainsKey(regionInfo.EnglishName))
  {
    regionLookup.Add(regionInfo.EnglishName,regionInfo.TwoLetterISORegionName);
  }
}

ddlCountries.DataTextField = "Key";
ddlCountries.DataValueField = "Value";
ddlCountries.DataSource= regionLookup;
ddlCountries.DataBind(); 

As a programmer I always try to find ways to cleaner code. This is an example:

The code can be a mess when using if else if else if else if (well, I think you know what I mean :) )

Instead of writing my code like this:

if (countryCode == "SE")
    country= "Sweden";
else if (countryCode== "NO")
    country= "Norway";
else if (countryCode== "DK")
    country= "Denmark";
else
    country = "";

I can write it like this:

country =(countryCode == "SE") ? "Sweden" : (countryCode == "NO") ? "Norway" : (countryCode == "DK") ? "Denmark": "";

Nice? Well, I think so :)