Regex for number and not a number how to#

Var isPhoneNumber = Regex.IsMatch(phoneNumber, phoneNumber, (isPhoneNumber ? string. You really want it to check all of those for each character.

As of version 3.6 all kinds of numbers can have in them, but it cant be first or. Floating point numbers can be in exponent form. Integers include decimal, binary, octal, and hexadecimal forms. If you really a regex that will match ALL valid forms of Python numbers, it will be a complex regex. , followed by anything that is not a number 0-9. But seriously, Python numbers are complicated. In the above code, we have taken Edit text and. Step 2 - Add the following code to res/layout/activitymain.xml. Step 1 - Create a new project in Android Studio, go to File New Project and fill all required details to create a new project.

Regex for number and not a number how to#

It is looking for anything that is not a dash, followed by anything that is not a. This example demonstrates how to verify enter number is phone number or not, using regex in android.

If your intent is merely to validate that the input is a phone number or not, rather than trying to capture anything, you can use the static Regex.IsMatch function: var isPhoneNumber = Regex.IsMatch(phoneNumber, '(1-)?\p a valid US number.' Your current regular expression is matching multiple characters.