how replace string content in string in c3 code example

Example: c# Replace Strings In C#

//The following example replaces all commas with a colon in a string.
//^_*
// Replace a char  
string odd = "1, 3, 5, 7, 9, 11, 13, 15, 17, 19";  
Console.WriteLine($ "Original odd: {odd}");  
string newOdd = odd.Replace(',', ':');  
Console.WriteLine($ "New Odd: {newOdd}");  
//The following example replaces all “Beniwal” with an empty string so only first names are copied to the new string.

string authors = "Mahesh Beniwal, Neel Beniwal, Raj Beniwal, Dinesh Beniwal";  
Console.WriteLine($ "Authors with last names: {authors}");  
// Remove all Beniwal with space and remove space with empty string  
string firstNames = authors.Replace(" Beniwal", "");  
Console.WriteLine($ "Authors without last names: {firstNames}");