Remove new lines and Replace Comma in Notepad++

Method 1:

Step 1: Place the cursor after the first item in the file.

Step 2: Click Macro → Start Recording in menu.

Step 3: Type this sequence in keyboard : comma Space Delete End 

Step 4: Click Macro → Stop Recording in menu.

Step 5: Click Macro → Run a Macro Multiple Times..  in the menu.

Step 6 : Click Run until the end of file and click Run.

Remove last instance.

Method 2:

Its very simple method 

Find this "\r\n" and Replace to "," 

Join multiple rows in single line file

1. Open file in Notepad++.
2. Highlight the lines you want to join (or use Ctrl + A to select everything.
3. Choose Edit → Line Operations → Join Lines from the menu or press Ctrl + J..

Print Screen(Select current Window): 

Click  Alt+ PrtScn 

Open the Paint and Paste.

You can get Current Screen.