Question

I need to replace some value in given text using c# preferably using regex

Input : This is sample text. I need to replace $100.00 value with new value.

Output : This is sample text. I need to replace $50.00 value with new value.

need to replace $100 to $50

Note: The number should be any size

solution:
this works for my requirement

Regex.Replace(“This is sample text. I need to replace $100.00 value with new value.”,
“\$\d+(\.\d+)?” , “50”, RegexOptions.IgnoreCase)

Answer 1

You should be able to use this:

RegEx rex = new RegEx("\\$\\d+\\.\\d\\d");

Then just use the replace function.

rex.Replace(input, "$50.00");

If you need to be able to determine the value to replace dynamically, based on the matched number take a look at the MatchEvaluator.