A master file extension is related to ASP.NET applications and websites developed and running on ASP.NET platform.

Detailed description

Software that open master file

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MASTER file extension - ASP.NET master page file

What is master file? How to open master files?

File type specification:

Source code and script file type icon Source code and script file type

The master file extension is related to ASP.NET applications.

ASP.NET master pages allow you to create a consistent layout for the pages in your application. A single master page defines the look and feel and standard behavior that you want for all of the pages (or a group of pages) in your application. You can then create individual content pages that contain the content you want to display. When users request the content pages, they merge with the master page to produce output that combines the layout of the master page with the content from the content page.

A master page looks very similar to an ASPX file format.
These files use an @ Master directive instead of an @ Page directive at the top. *.master pages will define the <html>, <head>, <body >, and <form>, tags.

To use Master Pages in your ASP.NET Web application, you create a Master Page for the site layout and design and create Content Pages for each content resource, and then connect the content pages to the master pages using the new controls and attributes supplied by ASP.NET.

After you make that connection, ASP.NET will serve up the page by merging the content from the master page with the content of the content pages.

Example of ASP.NET master page:

<%@ Master Language="C#" %>

    1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">

<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server" >
    <title>Master page title</title>
    <form id="form1" runat="server">
               <td><asp:contentplaceholder id="Main" runat="server" /></td>
               <td><asp:contentplaceholder id="Footer" runat="server" /></td>

The default software associated to open master file:

ASP.NET icon

Microsoft Corporation logoASP.NET  Microsoft Windows software

Company or developer:
Microsoft Corporation

Microsoft ASP.NET is web application framework used by web programmers to crate web applications, web services and dynamic web sites. Source code of ASP.NET web is written in static (X)HTML and dynamic parts use .NET source code. ASP.NET pages work in all web browsers, such as Firefox, Internet Explorer, Safari, Opera etc.

Visual Studio Code icon

Microsoft Corporation logoVisual Studio Code  Multiplatform software

Company or developer:
Microsoft Corporation

Visual Studio Code is integrated development tool for creating web and cloud software available for Linux, Mac OS X (macOS), and Windows.

Help how to open:

Use Microsoft's ASP.NET code developmnent tools and software to work with these files.

How to convert:

Files of this type normally do not convert.

Related links:

ASP.NET master pages

List of software applications associated to the .master file extension

Recommended software programs are sorted by OS platform (Windows, macOS, Linux, iOS, Android etc.)
and possible program actions that can be done with the file: like open master file, edit master file, convert master file, view master file, play master file etc. (if exist software for corresponding action in File-Extensions.org's database).

Click on the tab below to simply browse between the application actions, to quickly get a list of recommended software, which is able to perform the specified software action, such as opening, editing or converting master files.

Software that open master file - ASP.NET master page file

Programs supporting the exension master on the main platforms Windows, Mac, Linux or mobile. Click on the link to get more information about listed programs for open master file action.


Main software associated with master file by default:
Visual Studio Code small icon Visual Studio Code
Other suggested software:
Microsoft Visual Studio small icon Microsoft Visual Studio

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