If your Excel files are opening in Notepad on Windows PC, here's how you can reset the settings to make .xls, .xlsx, etc files open in Excel.

How to Open Multiple CSV Files in One Excel Spreadsheet. The CSV file extension appears on text documents that contain comma-separated values. Like spreadsheet data, each line in a CSV file ...

An open standard file format originally introduced in 1998, iCal stores calendar information in a format that's easily shared between applications, both calendar and apps such as Microsoft Excel ...

Need to look at invisible files and show hidden file extensions in Windows? Here's how to reveal them.

One way to present XML information to a user is by converting it to a file format the user actually knows. Edmond Woychowsky walks you through his process, including all the necessary sample code ...