For simple numbers, that may be right, but when working with scientific or financial numbers, you often have to deal with positive and negative numbers, significant digits, exponents, and even different representations (like the comma used to separate thousands and millions).
Below are a few different formats of numbers that you might encounter.
At first glance, writing a regular expression to match a number should be easy right?
We have the \d special character to match any digit, and all we need to do is match the decimal point right?
NET there are controls that rely on the language of regular expressions.
I want regular expression which will accept interger input as well as number upto 2 decimal places.
I am using following following regular expression for validation.
\d.\d This works fine for numbers like 1.23 or 1.00.
NET Regular Expression API Summary: Regular expressions are an extremely useful tool for working with text.
Introduction Brief History of Regular Expressions Simple Expressions Quantifiers Metacharacters Character Classes Predefined Set Metacharacters Sample Expressions Validation in ASP.
NET Regular Expression API Free Tools Advanced Topics Conclusion Resources About the Author Support for regular expressions in the Microsoft®.