How to create a folder in a custom list

Very simple but can be very daunting if its not implemented with the correct logic. 


Use this code:
custLstObj.Folders.Add(parentFolderUrl, SPFileSystemObjectType.Folder, folderName);


Here's the details about the parameters
ParentFolderUrl: This is the url of the parent folder. For example if the folder is under main library then it should be '/lists/{listname}'
in case of sub folder this should be like '/lists/{listname}/{sub-fldername}'
SPFileSystemObjectType: Folder
folderName: actual name of the folder


if you use the 'Add' function with these parameters and perform 'UpdateOverWriteVersion' afterwards. The call to 'UpdateOverWriteVersion' function won't throw any exception.


Majid