c# replace string code example

Example 1: c sharp string replace

// You can use the function 'Replace()' to replace all instances
// of a string or character with a given string or character.
str  = "Hello World!"
str.Replace('o', 'e');
// Output: "Helle Werld!"

Example 2: String.Replace() c#

String s = "aaa";
Console.WriteLine($"The initial string: {s}");
s = s.Replace("a", "b").Replace("b", "c").Replace("c", "d");
Console.WriteLine($"Final String: {s}");

// Returns "Final String: ddd"

Example 3: 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}");

Example 4: modificare una strinfa in c#

string phrase = "The quick brown fox jumps over the fence";
Console.WriteLine(phrase);

char[] phraseAsChars = phrase.ToCharArray();
int animalIndex = phrase.IndexOf("fox");
if (animalIndex != -1)
{
    phraseAsChars[animalIndex++] = 'c';
    phraseAsChars[animalIndex++] = 'a';
    phraseAsChars[animalIndex] = 't';
}

string updatedPhrase = new string(phraseAsChars);
Console.WriteLine(updatedPhrase);