Remove duplicate lines from textbox in .net 2.0 - winforms

Question

I have a multiline text and i want to remove the duplicate lines in it. I use the following code to seperate the lines in an array.
string[] lines = txtPathological.Text.ToString().Split(new string[] { Environment.NewLine }, StringSplitOptions.None);
But there is no command lines.Distinct(). Is there a way to do that ?

Answer 1

This works for me...
String[] lines = { "my line 1", "my line 2", "mhyline3", "lslfkdfkjdf", "my line 2", "my line 1", "my line 1", "LKDJF" };
List<String> list = new List<String>();
foreach (String s in lines)
{
if (!list.Contains(s))
list.Add(s);
}
"list" will then contain the distict lines, which you could get back to an array using:
String[] distinctLines = list.ToArray();
If this doesn't work, I'd suspect there's something about your lines that is fooling the Contains() method. If so, you'd likely have to make a method to replace Contains(), local or extension, that would handle inspection of the line.

Answer 2

var lines = txtPathological.Text.ToString().Split(new string[] { Environment.NewLine }, StringSplitOptions.None);
var dLines = lines.ToList().Distinct();
Edit:
string[] lines = txtPathological.Text.ToString().Split(new string[] { Environment.NewLine }, StringSplitOptions.None);
List<string> dLines = new List<string>();
foreach (var line in lines)
{
if (!dLines.Contains(line))
{
dLines.Add(line);
}
}

Answer 3

You could try :
string[] lines = txtPathological.Text.Split(new string[] { Environment.NewLine }, StringSplitOptions.None);
List<string> templines = new List<string>(lines);
List<string> tempList = new List<string>();
for (int i = 0; i < templines.Count; i++)
{
if (!tempList.Contains(lines[i])) tempList.Add(lines[i]);
}
TempList is your sorted list.
Hope it could help.