Group 1 will have meeting id, group 2 will have password

Replace sub-strings in string

Checks validity of an EA number first two digits 01-12 followed by hyphen then a number from 0-4 and then 4 numbers or uppercase letters and ending in a 1 or 4 for example "05-1J7601". Adding a capital C to the beginning is also accepted "C05-1J7601", along with the entry of 2 X's hyphen and 6 X's ...

With this C# regex, you can easily match/Parse Nested HTML tags. Example input: someTitle ...

Match any layer bracket pair