Aggregating Error Trap - Textbox That Is Used To Add Directories To A System Folder

I have a textbox that is used to add directories to a system folder, each name seperated by a line. If the textbox has text value "Test " that is "Test" & controlchars.newline & "" (not like this is coded, it's typed in), then if i use loop for each part as string in textbox1.text.split(controlchars.newline), the first part will be "Test", the second part will say " " when i run step by step debugger, but if i try and block the addition of a folder by "if part = " "" it does not catch it. I've tried comparing part to "", " ", nothing (which is illogical anyways), and i even tried creating a boolean variable equal to the statment to try and catch it but the program insists that part is not " " even though the debugger tells me that is the value of part.