Regex class for validate any input string for any specific format.
The following example will allow you to Input Phone Number only.
It ends with an optional group composed of a decimal and two digits.
The second regular expression is nearly the same as the first with one difference.
In this example we can determine whether a user entered phone number in a common format that includes Similarly if we want to validate phone number like xxx-xxx-xxxx format then you can use “\d-\d-\d”.
If you want to use regular expression for validating phone or mobile numbers followed by country code. Net, Silverlight, HTML, XML, Crystal Report, Active Reports, Infragistics, Component Art, Compone One, Lead Tools etc.
This allows some string based tests to verify that the string's pattern matches acceptable numeric data. Said another way: only an unsigned (positive) whole number.
NOTE: the if a decimal point is present it must be followed by at least one digit in each example.
Etc.), you see a form contains a number of fields and each one of these fields has to be filled in with specific data such as Email, Zip code, phone number and a password with specific conditions.
As a developer you create a form like this and put a label beside each field to tell the user that you should enter your zip code in this field, but actually not all the users follow the labels and enter what you are waiting for, sometimes one of the users will enter a fake email address or even enter some letters that don’t refer to anything like “abcdef” as Phone number, this mistake will lead to some problems.
There is nothing really tricky in the first regular expression. It requires the first digit not to be zero, and that can be followed by zero, one, or two digits.
After that there can be zero or more groups composed of a comma and exactly three digits.
A regular expression to check that would look like this: These regular expressions are similar to the three above.