using System;
using System.Text.RegularExpressions;
public class Example
{
public static void Main()
{
string pattern = @"^(?!\d{2}\h*[:-]\h*\d{2}\h*$).*[\r\n]+";
string substitution = @"";
string input = @"01 - 10
This is the first one :1
02:45
This is the second one -2
03-88
This is the third one ""3
04:40
This is the forth one ;4
05 - 50
This is the fifth one .5";
RegexOptions options = RegexOptions.Multiline;
Regex regex = new Regex(pattern, options);
string result = regex.Replace(input, substitution);
}
}
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