Exact Regex Pattern Match of a string with single quotes

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Hi All,

I have a string which contains single quotes say for example "He and 'she' are my Dad friends". I want to replace 'she' with Latha. So Could you please let me know whether this is possible. The below example works for exact match without single quotes. But with single quote this fails. Please help.

C#

string pattern = @"\bLatha\b"; 
string input = "He and she are my Dad friends"; 
string result = Regex.Replace(input, pattern, "she", RegexOptions.None);

result is : He and Latha are my Dad friends

C#

string pattern = @"\bLatha\b"; 
string input = "He and 'she' are my Dad friends"; 
string result = Regex.Replace(input, pattern, "'she'", RegexOptions.None);

result is : He and 'she' are my Dad friends

Expected result is : He and Latha are my Dad friends

Kindly let me know your suggestions.

Thanks & Regards,
Mathi.

Posted 4-Nov-14 4:12am

Mathi2code

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Manas Bhardwaj · Answer 1 · 2014-11-04T04:25:00

Solution 2

Try this:

C#

const string pattern = "Latha";
const string input = "He and 'she' are my Dad friends";
var regExpr = new Regex("\'.*\'", RegexOptions.IgnoreCase);
var result = regExpr.Replace(input, pattern);

Posted 4-Nov-14 4:25am

Manas Bhardwaj

Peter Leow · Answer 2 · 2014-11-04T04:31:00

This should work, single quote or not:

C#

using System;
using System.Text.RegularExpressions;

public class Program
{
    public static void Main()
    {
        string pattern = @"\'?she\'?";
        string input = "He and 'she' are my Dad friends";
        string result = Regex.Replace(input, pattern, "Latha", RegexOptions.None);
        Console.WriteLine(result);
    }
}

jaket-cp · Answer 3 · 2014-11-04T04:24:00

Solution 1

Try this:

C#

string pattern = "'she'";
string input = "He and 'she' are my Dad friends";
string result = Regex.Replace(input, pattern, "Latha", RegexOptions.None);

I believe you mixed up the pattern and replacement.
Check out:
http://msdn.microsoft.com/en-us/library/ewy2t5e0(v=vs.110).aspx[^]

Posted 4-Nov-14 4:24am

jaket-cp

Updated 4-Nov-14 4:36am

v3