Remove duplicate Items from textbox.

[Rajendra Rana]

I have imported URLs from particular web page into one textbox,there are so many Duplicate URLs are generated.now I want to remove this duplicate URLs from this Text box.On pressing one Button (Click) .How can i do it? can any body help me ! Thnx in Advance. Raj

[malharone]

I'm sure you have some sort of delimiter when the URLs are added to the textbox. E.g http://www.yahoo.com;http://www.msn.com;http://www.google.com; You could split this delimited list using string.split method string[] myURLs = textbox1.Text.Split(';'); ArrayList uniqueURLs = new ArrayList(); foreach(string aURL in myURLs) { if (!uniqueURLs.Contains(aURL)) { uniqueURLs.Add(aURL); } } StringBuilder sb = new StringBuilder(); foreach (string uniqueURL in uniqueURLs) { sb.Append(uniqueURL); sb.Append(";"); } textbox1.Text = sb.ToString(); - Malhar