using System;
using System.Text.RegularExpressions;
public class Example
{
public static void Main()
{
string pattern = @"([-0-9a-zA-Z.+_]+\s?(?:@|\(at\)|\|at\||\(@\))\s?+[-0-9a-zA-Z.+_]+(?:\.|\(Dot\))(?:de|com|net|org))";
string input = @"text@text(Dot)de
text(@)text(Dot)de
text(at)text(Dot)de
text|at|text(Dot)de
text@text.de
text(@)text.de
text(at)text.de
text|at|text.de
text @ text.de
text (@) text.de
text (at) text.de
text |at| text.de";
foreach (Match m in Regex.Matches(input, pattern))
{
Console.WriteLine("'{0}' found at index {1}.", m.Value, m.Index);
}
}
}
Please keep in mind that these code samples are automatically generated and are not guaranteed to work. If you find any syntax errors, feel free to submit a bug report. For a full regex reference for C#, please visit: https://msdn.microsoft.com/en-us/library/system.text.regularexpressions.regex(v=vs.110).aspx