Home : File Types : ASMX File

.ASMX File Extension

File TypeASP.NET Web Service File

3.7 (6 Votes) Thanks for voting!
Rare Uncommon Average Common Very Common
CategoryWeb Files


File format categories include Binary, Text, XML, and Zip. The format of this file type has not been determined.

What is a ASMX file?

Defines Web services called by an Active Server Page (.ASP file); automatically compiled by ASP.NET when a request to the service is made; can be accessed over the Internet or from a local network.

More Information

ASMX files begin with the ASP.NET directive "WebService," followed by the "Language" parameter. This is used to set the programming language to Visual Basic, C#, or JScript. They can be run using a Windows-based Web server with the .NET framework.

Open over 300 file formats with File Viewer Plus.
Programs that open ASMX files
Microsoft Visual Web Developer
Microsoft Visual Studio 2015
Updated 5/25/2009

.ASMX Extension Information

This page contains information about the file extension ASMX and its known file associations. Our goal is to help you understand what a *.asmx file is and how to open it.

The ASP.NET Web Service file type, file format description, and programs listed on this page have been individually researched and verified by the FileInfo team. We strive for 100% accuracy and do not publish any information we have not verified.

If you would like to suggest any additions or updates to this page, please let us know.