C# How to select any character if line starts with " *:"

Question

I've read a Textfile using the readline method.

var txtfile = File.readlines([Filepath])
.where(s => s.startswith(" U:"));

Is there a trick to choose any letter? Something like this Pseudocode

s.startswith(" *:");

That's because my drive name changes continuously. Please note that it must be the exact order of letters. Thanks!

Answer 1

You can use below regular expression.

.Where(s => Regex.Match(s,@"^\s.{1}:.*").Success);

Here is a short explanation for that regex.

^ - start of the line

\s - blankspace

.{1} - exactly one occurrence of any character

: - match semicolon

.* - 0 or more characters