Help with simple C# error
.net, c#
Solution
You aren't initializing the StringBuilder and List.
StringBuilder Output = new StringBuilder();
List<string> Emails = new List<String>();
Problem
I'm writing this small program to extract any number of email address from a text file. I am getting two errors, "Use of unassigned local variable." and I'm not sure why. ``` static void Main(string[] args) { string InputPath = @"C:\Temp\excel.txt"; string OutputPath = @"C:\Temp\emails.txt"; string EmailRegex = @"^(?:[a-zA-Z0-9_'^&/+-])+(?:\.(?:[a-zA-Z0-9_'^&/+-])+)*@(?:(?:\[?(?:(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?))\.){3}(?:(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\]?)|(?:[a-zA-Z0-9-]+\.)+(?:[a-zA-Z]){2,}\.?)$"; string Text = String.Empty; StringBuilder Output; List<string> Emails; using (TextReader tr = new StreamReader(InputPath)) { Text = tr.ReadToEnd(); } MatchCollection Matches = Regex.Matches(Text,EmailRegex); foreach (Match m in Matches) { Emails.Add(m.ToString().Trim()); // one error is here } foreach (String s in Emails) { Output.Append(s + ","); // the other error is here } using (TextWriter tw = new StreamWriter(OutputPath)) { tw.Write(Output.ToString()); } } ``` Sorry for the formatting ... I'm kind of pressed for time! edit: WOW. I'm an idiot - must be because I'm pressed for time!!!!