Method 1:(Provided from second article)

Using the commands — assoc and ftype

First, open the command line enviroment as admin and find the current setting for current file using assoc

assoc .txt

Here I get the output

.txt=txtfile

Second, set the association to desired program path

ftype txtfile="G:\Program Files\Windows NT\Accessories\wordpad.exe" "%1"

Noting that he “%1” is nessesary to bring the file as input to open the program.

Then, every time you click the file, you will open the desired program to open the file

Method 2: using the Nirsoft’s FileTypesMan

Download this useful progrma, open it, and find the target filetype(shown below):

In the lower area, click on the “open” entry, end edit hte open way (shown below)

And edit the command-line path with desired program position, also remember to add “%1” to set file name as input for the program, like below:

And next time clicking on the file should open with assigned program.