using System;
using System.Text.RegularExpressions;
public class Example
{
public static void Main()
{
string pattern = @"\?(firstName|lastName|email|phone1|address)=([^&]*(?:&[^&=]+(?=&|$))*)(?:&|$)";
string substitution = @"";
string input = @"https://example.com?email=abc&xyz@.com&isAvailableReferral=true
https://example.com?email=abc@xyz.com&isAvailableReferral=true
https://example.com?email=abc&xyz@.com
https://example.com?email=abc@xyz.com
";
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