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.ctl File Extension

Developer: Microsoft Corporation

File type: Visual Basic UserControl Object File

You're here because you have a file that has a file extension ending in .ctl. Files with the file extension .ctl can only be launched by certain applications. It's possible that .ctl files are data files rather than documents or media, which means they're not meant to be viewed at all.

what is a .ctl file?

The Microsoft Visual Studio 2010 software uses files appended with the .ctl format as developer files. These are stored in the CTL format that was created by Microsoft, and these CTL developer files are also called Visual Basic UserControl Object files. The content of these CTL files consists of code that refer to ActiveX controls entered by the author of the CTL file and the associated project output file using the Microsoft Visual Basic development application. Visual Basic UserControl details associated to a project authored using the Microsoft Visual Studio 2010 are entered as source code in a CTL file, while the binary control data corresponding to a particular project file and its associated CTL file is stored in a file appended with the .ctx extension. Users of computers running on Microsoft Windows-based systems can install the Microsoft Visual Studio 2010 software to create and modify these project files and to enter data in these CTL files.

how to open a .ctl file?

Launch a .ctl file, or any other file on your PC, by double-clicking it. If your file associations are set up correctly, the application that's meant to open your .ctl file will open it. It's possible you may need to download or purchase the correct application. It's also possible that you have the correct application on your PC, but .ctl files aren't yet associated with it. In this case, when you try to open a .ctl file, you can tell Windows which application is the correct one for that file. From then on, opening a .ctl file will open the correct application. Click here to fix .ctl file association errors

applications that open a .ctl file

Microsoft Visual Studio

Microsoft Visual Studio is an integrated development environment (IDE) produced by Microsoft. It has a code editor that supports syntax highlighting and code completion using IntelliSense for not only variables, functions and methods but also language constructs like loops and queries; includes a debugger that works both as a source-level debugger and as a machine-level debugger; includes a host of visual designers to aid in the development of applications and other tools. Visual Studio permits developers to write extensions for Visual Studio to expand its capabilities. These extensions are linked to Visual Studio and extend its functionality. Extensions come in the form of macros, add-ins, and packages. Macros represent repeatable tasks and actions that developers can write programmatically for saving, replaying, and distributing; add-ins gives access to the Visual Studio object model and can interact with the IDE tools; and packages can create designers and other tools, as well as integrate other programming languages.

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Microsoft MSTest

MSTest is a command line function that executes unit tests created in Visual Studio 2005, Visual Studio 2008 or Visual Studio 2010 and was developed by Microsoft; also called the Visual Studio Test Result. It is integrated with the TRX file format, and contains results associated to the test done by the user.MSTest.exe is the command used to run the test. This command has a number of options the user can use to modify the test run and user can utilize many of these options in conjunction with one another. User can specify these options in any order on the MSTest.exe command line. These Visual Studio test results files are utilized for debugging some problems in a Microsoft Windows application project created with the Visual Studio program, as well as for improving those functionalities. The data saved in these Visual Studio test results files are also used by the Visual Studio application to be shown in the GUI (Graphical User Interface) of the program the results of certain tests implemented by the user for a Visual Studio application development project.

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Microsoft Visual SourceSafe

Microsoft Visual SourceSafe (VSS) is a source control software package adjusted towards small software development projects. It generates a virtual library of computer files, like most source control systems. While most commonly used for source code, SourceSafe can actually handle any type of file in its database, but prior versions have been shown to be unstable when confronted with large amounts of non-textual data such as images, binary executables, etc. The SSC file is categorized as a Developer File and a SourceSafe Status File type, produced by Microsoft Corporation. The company utilizes status file for the source control. It has tracks and file revisions. This type of file is similar to FPP files. It is utilized for business settings where many people edit and use the files making sure that one file at a time is edited by one person only. Microsoft had given Visual SourceSafe and Microsoft Visual Studio 2010 if user encounters problems in opening these files. These two programs are able to open SCC files under Windows operating systems.

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a word of warning

Be careful not to rename the extension on .ctl files, or any other files. This will not change the file type. Only special conversion software can change a file from one file type to another.

what is a file extension?

A file extension is the set of three or four characters at the end of a filename; in this case, .ctl. File extensions tell you what type of file it is, and tell Windows what programs can open it. Windows often associates a default program to each file extension, so that when you double-click the file, the program launches automatically. When that program is no longer on your PC, you can sometimes get an error when you try to open the associated file.