Windows uses the whole file-name extension. For example, a visual basic script extension is .vbs. Windows recognizes the pattern .vbs as a visual basic script,or a .txt short for text. .rtf for rich text format, and so forth. you can change default programs for the file extension in the control panel. File extensions that windows does not recognize are usually from programs or codecs you do not have on your computer.
The main project file has a VBPROJ extension. This is also a file with the same name as the main project file, but with an SLN extension. The SLN extension is a solution file.
A file name is what a file is called. A file extension defines what type of file it is. (Text file, HTML file, executable, etc.)
. (Dot)
Templates (.dot) are identical to Word (.doc) files but all of the formatting in them applies to the current document. In Word, if you create a New file and use the default then it has the normal.dot file formats. Some templates have Visual Basic macros to help you fill out the document e.g. your company name in a fax template.
It is a batch command file.
File extension.
For most typical Word documents the extension is .docFor Excel workbooks (spreadsheets) the extension is .xlsIn general the file extension is the 3 letter/number "code" after the period in the complete file name that gives a hint as to what type of file it is. For example, in the file name resume.docthe word resume is the file's actual name and the .doc tells you that it is a document file.
Folders have no extension.
The filename and extension of the file you want to start and .msc (eventvwr.msc)
A compatible file is a file name extension (or format) that a program can read.
File extension.