I want to compare 2 lines, but the one line is in a random sequence. I use text boxes, like this:

Textbox1:  

friends  

pals  

elephant  

Textbox2:  

aspl

Now when I hit a button I want Textbox3 to show the following:

Textbox3:  

pals

What I got so far:

```
            Textbox3.Clear();
            string[] lines1 = Textbox2.Lines;
            foreach (string line1 in lines1)
            {
                string[] lines = Textbox1.Lines;
                foreach (string line in lines)
                {
                    if (line.Contains(line1))
                    {

                        Textbox3.Text += line;
                        Textbox3.Text += "\r\n";
                    }
                }

             }

```

But this will only copy the line to Textbox3 if the line in Textbox1 and Textbox2 is totally identical, not just if the characters is identical.

So my question is: How do I do that?