Hi,
Here's you can get Folder Name.
You can split the string using slash(/) character.
C#
string mystring = "https://res.cloudinary.com/hspa/image/upload/v1123455/test2/eid.jpg";
string folderName = mystring.Split('/')[mystring.Split('/').Length - 2];
VB.Net
Dim mystring As String = "https://res.cloudinary.com/hspa/image/upload/v1123455/test2/eid.jpg"
Dim folderName As String = mystring.Split("/"c)(mystring.Split("/"c).Length - 2)
Screenshot