#1,005 – Replacing a Substring with a New Substring

You can use the string.Replace method to find and replace a substring of a longer string with a new substring.  Replace is an instance method that acts upon a specified string and returns a new string.

In the example below, we replace every occurrence of “race” with “class”, returning the new string.

            string quote =
@"There's a race of men that don't fit in,
A race that can't sit still;";

            string newQuote = quote.Replace("race", "class");

            Console.WriteLine(string.Format("ORIGINAL:\n{0}", quote));
            Console.WriteLine(string.Format("NEW:\n{0}", newQuote));

You can use Replace to remove instances of a particular substring (replacing them with an empty string).

            string quote = "Four awesome score and seven awesome years ago";

            string newQuote = quote.Replace("awesome ", "");

            Console.WriteLine(string.Format("ORIGINAL:\n{0}", quote));
            Console.WriteLine(string.Format("NEW:\n{0}", newQuote));



About Sean
Software developer in the Twin Cities area, passionate about .NET technologies. Equally passionate about my own personal projects related to family history and preservation of family stories and photos.

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