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

Recently I wanted to insert a row in a database from a flat file. But I needed to check if db already contained that data. So how to do that with Linq? With SQL it would have been simple. Just use the exists statement. But it´s not that straight forward with linq. Or...is it?

Check this out:

if(!db.tblPerson.Any(p=>p.DateOfBirth == DateOfBirth))
//Do the insert dance :) 

I have two tables with a lot of data. I have to compare them and find out if there are data in table 1 that does not exist in table 2.

Well. I could use this script:

SELECT
name
FROM
table1
WHERE
name NOT IN (SELECT name FROM table2) 

 But since it´s a lot of data in those tables, it will take a while. This script will do it faster: 

SELECT
tbl2.name
FROM
table1 tbl1
RIGTH OUTER JOIN table2 tbl2 ON tbl1.name = tbl2.name
WHERE
tbl1.name IS NULL

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(); 

If you need to get color codes to use on your website, you must check this out: http://html-color-codes.info/

Wunderbar! :) 

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 :)