C# string replacement , not working

Question

I have a string which I read in from :

TextReader tr = new StreamReader(this.dataPath );
string contents = tr.ReadToEnd(); 

The value of co

Answer 1

System.String is immutable. Operations such as Replace return a new string rather than modifying this string. Use System.Text.StringBuilder if you truly need a mutable string or just assign the result of the Replace call to a variable.