You can open .DAT files that contain text, with text editors, like Notepad, Notepad++, VS Code, etc. But it is not possible to know what contains in a DAT file.

To make Notepad files always open in a new or separate window in Windows 11, open Notepad setting and change the 'Opening files' option.

Despite its slim profile and Windows 3.1-style interface, Notepad is a tool that Windows users have come to know and love, using it for all manner of tweaking, quick editing, and other tasks. The ...

Need to use third-party programs to open files on your PC? Here's how to change file associations in Windows 10 and choose which apps open which file types.

The file format is plain text, which means you can use a free plain text editor such as Windows Notepad to open, edit, and then save the file in the same CFG format.

When you open files that have a particular file extension, Windows will look at its configuration to determine what the default program should be in order to work with these files. The default ...

File Setup To build a CSV file to open in Microsoft Excel, you'll need to decide how many columns you'll use in Microsoft Excel for the categories of information you're preparing in Notepad.

Anyone know of a way on a win98 machine that I can create an icon that will prompt the user to open a file, and then open it in notepad?I thought for sure there was a command line switch that ...

If it's what I think it is, that's not a file. It's a shortcut basically. There is nothing to open in a text editor because it's just a URL shortcut. You can't 'open with' because it's just a ...