In this guide, we explain to you What is a DAT file and how to open DAT file. What is a DAT file? A DAT file is a program file that contains the data related to the program that has created it.

I wrote a program that generates fractals in visual basic. The way it currently works is that I pass the function a handle to a device context and it uses SetPixel to draw to that hDC.

Open Visual Studio and click the "File" menu. Select the "Open Project" option and navigate to the folder where you saved your Visual Basic project.

Launch Visual Basic 6 or Visual Basic Express. Open the project file in which you want to create a module and command button that creates an Excel spreadsheet from selected data.

The basic file-handling commands had not changed; just a few more features had been added. With Visual Basic .NET, Microsoft introduced a new, object-oriented method for working with files.