I'm sorry to hear that you accidentally deleted your MATLAB project. If you only have the final .NET DLLs and CTF files, it may be difficult to fully restore your project, but there are a few things you can try.
First, you can try to create a new MATLAB project and import the .NET DLLs and CTF files into it. To do this, go to the "Home" tab in MATLAB and click on "New Project". In the "New Project" dialog box, give your project a name and select a location for it. Then, click "Create".
Once you have created a new project, you can try to import the .NET DLLs and CTF files into it. To do this, right-click on the "Files" folder in your project and select "Add > Files...". In the file explorer, navigate to the location of your .NET DLLs and CTF files and select them. This should add the files to your project.
If the above method does not work, you can try to decompile the .NET DLLs using a tool like Reflector or DotPeek. These tools can extract the original source code from the compiled DLLs, which may allow you to rebuild your project. Once you have decompiled the DLLs, you can create a new MATLAB project and import the decompiled source code files into it