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Posted By

theroamingcoder on 09/22/09


Tagged

list empty c strings comma


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Remove empty values and extra whitespace from a list

 / Published in: C#
 

This is useful for handling user provided, comma separated data. For example, in the case where the user inputs " 1, 2,3,4,, 5, 6, " you would want to remove the whitespace around each item as well as the empty items to produce "1,2,3,4,5,6".

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  1. List<String> items = new List<String>(" 1, 2,3,4,,   5, 6,  ".Split(','));
  2. items.RemoveAll(delegate(string s){return s.Trim() == "";});
  3. items.ForEach(delegate(string s) { items[items.IndexOf(s)] = s.Trim(); });
  4. Console.WriteLine(String.Join(",",items.ToArray()));
  5. Console.ReadKey();

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