using System;
using System.Text.RegularExpressions;
public class Example
{
public static void Main()
{
string pattern = @"^((http|https):\/\/)?([\/\w \.-]*)";
string input = @"https://stackoverflow.com/questions/3809401/url?test=1
http://stackoverflow.com/questions/3809401/url/?test=1
https://stackoverflow.com/questions/3809401url
http://stackoverflow.com?test=1
http://stackoverflow.com/
http://stackoverflow.com/test/
";
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