Tag: expressions

To match strings using wildcards in C# and VB.NET you can use the following snippet. It will internally convert the wildcard string to a Regex. The Console-Output of this sample…

To match roman numerals using Regex you can use the following regex. The First Group should contain the Roman Numeral. ^(?i:(?=[MDCLXVI])((M{0,3})((C[DM])|(D?C{0,3}))?((X[LC])|(L?XX{0,2})|L)?((I[VX])|(V?(II{0,2}))|V)?))$

To get the Youtube VideoId from an Url in C# and VB.NET you can use the following snippet. It matches these 18 type of Youtube Links (Sample Data): Sample Input…

To get the VideoID of a youtube video using Regex you can use the following snippet. Sample Regex ^(?:http(?:s)?:\/\/)?(?:www\.)?(?:youtu\.be\/|youtube\.[a-zA-Z]{1,3}\/(?:(?:watch)?\?(?:.*&)?v(?:i)?=|(?:embed|v|vi|user)\/))([^\?&\”‘>]+) This will match the Vl1tVxfFf1A in https://www.youtube.com/watch?v=Vl1tVxfFf1A. A more complex regex…