String-based list sorting

Question

How to sort the list in order, for example,

• SMTP: [e-mail]
• SMTP: [e-mail]
• SMTP: [e-mail]

I would like to sort so that the uppercase entry is the first in the list, for example SMTP: [e-mail].

Answer 1

You can use StringComparer.Ordinal to be case sensitive:

        List<string> l = new List<string>();
        l.Add("smtp:a");
        l.Add("smtp:c");
        l.Add("SMTP:b");

        l.Sort(StringComparer.Ordinal);

Answer 2

I wrote another example while t4rzsan answered =) I prefer the answer t4rzsan ... anyway, this is the answer I'm writing.

//Like ob says, you could create your custom string comparer
public class MyStringComparer : IComparer<string>
{
    public int Compare(string x, string y)
    {
        // Return -1 if string x should be before string y
        // Return  1 if string x should be after string y
        // Return  0 if string x is the same string as y
    }
}

:

public class Program
{
    static void Main(string[] args)
    {
        List<string> MyList = new List<string>();

        MyList.Add("smtp:[e-mail]");
        MyList.Add("smtp:[e-mail]");
        MyList.Add("SMTP:[e-mail]");

        MyList.Sort(new MyStringComparer());

        foreach (string s in MyList)
        {
            Console.WriteLine(s);
        }

        Console.ReadLine();
    }
}

Answer 3

. , .

In your case, the default sort function will probably work.

Answer 4

you need to create a custom comparator class that implements IComparer