Regular expression for validating date of birth
this incomplete analysis suggests an algorithm something like this, combining of day for February is less than 30 for leap years and less than 29 for non leap years. Tip: control your input: use three input boxes with drop down lists for day and month; it's easier to edit three separate fields.
The validation support provided by MVC and Entity Framework Core Code First is a good example of the DRY principle in action. This Git Hub issue 4076 for instructions on adding decimal comma.
Step 3 Then select Console Application, provide the name of the application "Regular Expression1" and click on OK.
Step 4 After adding the project "Regular Expression1" you will see the following code in the "Program.cs" file and for creation of the regex add the namespace: using System. Regular Expressions; Step 5 Now write the following code in the file to create the regex.
You can create rules that people have to follow when they fill out your form.
For example, if you ask for email addresses, you can make sure that people can only submit properly formatted email addresses.
however, for months April, June, September, and November, the first digit must not be numerically greater than 30. regarding year, you need to further restrict it, based upon your application ...