Replacing string characters in c#

Question

I have a string which is a sentence or two long (more than one word). In that sentence there will be a hash-tagged word e.g. #word. This needs to be replaced with *word*.

If the sentence is:

Today the weather is very nice #sun

It should become:

Today the weather is very nice *sun*

How would I go about doing this?

Answer 1

You could do a regular expression, like this:

var output = Regex.Replace(input, @"#(\w+)", "*$1*");