using System;
using System.Text.RegularExpressions;
public class Example
{
public static void Main()
{
string pattern = @"^.+?@(?=[a-z0-9-]{0,61}\.[a-z]{2,})";
string input = @"user:pass@zxuz.com
user@proxy.brew.opendnstest.com/customBlockUserInfo
user:@proxy.brew1.opendnstest.com/customBlockUserInfo
user:password@proxy.brew2.opendnstest.com/customBlockUserInfo
ftp://cnn.example.com&story=breaking_news@foobar.com/top_story.htm";
RegexOptions options = RegexOptions.Multiline;
foreach (Match m in Regex.Matches(input, pattern, options))
{
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