Need Regular Expression Logic to find string

Question

Hello,

I want to find a particular string (word) from a sentance.

Given String: "In a given health plan your Plan Name: Medical and Plan Type: PPO
whose effective date: 2019-01-01 and coverage value $100 and $200".

1) if I pass "Plan Name:" then my output would be "Medical".
2) if I pass "Plan Type:" then my output would be "PPO".
3) if I pass "effective date:" then my output would be "2019-01-01".
4) if I pass "coverage value" then in this case I need two value.
Min value "$100" and MAX value "$200".

Similary I need email address from a given sentence.
There could be scenario where I just need to pic a date, email or a numreric value from a given sentence.
In this case I do not have any previous value to match.

I need a regular expression logic that covers all above requirnments.

Thanks
Udai Mathur

Vishal Patel · Answer

Hello Udai I have found some solution for your query you can implement in your code. 1) For Number resultString = Regex.Match(subjectString, @"\d+").Value; 2) For Date public DateTime? GetDateFromString(string input) { DateTime d; // Exclude strings with no matching substring foreach (Match m in Regex.Matches(input, @"[0-9]{2}\.[0-9]{2}\.[0-9]{4}")) { // Exclude matching substrings which aren't valid DateTimes if (DateTime.TryParseExact(match.Value, "dd.MM.yyyy", null, DateTimeStyles.None, out d)) { return d; } } return null; } 3) For Email public static void GetEmailFromString(string text) { const string MatchEmailPattern = @"(([\w-]+\.)+[\w-]+|([a-zA-Z]{1}|[\w-]{2,}))@" + @"((([0-1]?[0-9]{1,2}|25[0-5]|2[0-4][0-9])\.([0-1]?[0-9]{1,2}|25[0-5]|2[0-4][0-9])\." + @"([0-1]?[0-9]{1,2}|25[0-5]|2[0-4][0-9])\.([0-1]?[0-9]{1,2}|25[0-5]|2[0-4][0-9])){1}|" + @"([a-zA-Z]+[\w-]+\.)+[a-zA-Z]{2,4})"; Regex rx = new Regex(MatchEmailPattern, RegexOptions.Compiled | RegexOptions.IgnoreCase); // Find matches. MatchCollection matches = rx.Matches(text); // Report the number of matches found. int noOfMatches = matches.Count; // Report on each match. foreach (Match match in matches) { Console.WriteLine(match.Value.ToString()); } }