Tacview Wiki

Creating a new C# add-on with Visual Studio 2019[]

For this tutorial you can use the latest version of Visual Studio Community

Download and run the latest installer of Tacview: http://tacview.net/download

In Visual Studio 2019, create a new DLL project

Create a new project-0

Configure your new project-0

Your new project

Make sure everything is configured to build as 64-bit target (x64). Do not build for "Any CPU".

The following is an example of a build configuration (In VS, Build -> Configuration Manager) that should work if debugging in x64.

Configuration Manager-0

Build x64

From C:\Program Files (x86)\Tacview\SDK\cs\, copy the folder Tacview.Wrapper into the folder of your new add-on.

Copy the folder Tracview

Copy Tacview Wrapper TO my add-on

Obtain the most recent version of DLLExport.bat from this GitHub repository: https://github.com/3F/DllExport And place it in your add-on folder.

Place DLLExport

Copy the text of C:\Program Files (x86)\Tacview\SDK\cs\HelloWorld\HelloWorld.DllInterface.cs to your add-on. Change the namespace as necessary.

Copy code FROM

Copy code TO

Right-click on the solution to Add -> Existing Project -> Tacview.Wrapper -> project -> Windows -> Tacview.Wrapper.vcxproj

Existing Project

Add Existing Project (Tacview Wrapper)

Your Addon after adding Tacview Wrapper

Run DllExport.bat in your add-on folder

Run bat file

Close Visual Studio if it is still open, and browse to the location of the solution of your add-on if a browsing window appears.

Make sure (x64) is selected, tick the Installed checkbox next to your Add-on and Apply.

DLLExport x64 (2)

Reload your project.

Add reference to Tacview Wrapper.

Add reference


​​​​​​Right-click on your Project and select Properties to set the Output Path equal to C:\ProgramData\Tacview\AddOns\YourAddOn\


Output Path

To debug your add-on, specify Tacview as the external program to start:

Run with external program


Microsoft Visual C++ Redistributable for Visual Studio 2015, 2017 and 2019[]

In the case that this error message appears in the log:

Make sure the latest version of Microsoft Visual C++ Redistributable for Visual Studio 2015, 2017 and 2019 has been installed on this system:"https://support.microsoft.com/help/2977003"

Make sure that you are not attempting to run a DEBUG version of this addon if you are not a developer. DEBUG builds require additional DLLs and tools.

First, use the link provided to download the latest version of Microsoft Visual C++ Redistributable for Visual Studio 2015, 2017 and 2019, even if you are sure that you have already downloaded everything your need. Close and re-launch Tacview.

If the error is still occurring it could be caused by the DLL having been compiled in DEBUG mode and now being run on a computer that is not set up for debugging. If you are the developer, be sure you are compiling the DLL in RELEASE mode. If you are not the developer, please contact the developer.

When I debug or throw exceptions in a .NET add-on, Tacview crashes.[]

Make sure you are running at least Tacview 1.9.3 beta 8 (or Tacview 1.9.3 stable), in which this issue is resolved. This issue occurs only on newer computers because it has to do with a security enhancement introduced in latest versions of Windows in combination with latest Intel and AMD processors.