Copy File Contents

Getting Started with Copy File Contents

Install the extension via the Visual Studio Marketplace or by opening the .vsix file manually.
Open your solution in Visual Studio.
Select one or more items in the Solution Explorer — this includes files, folders, or a combination of both (use Ctrl or Shift for multi-selection).
Right-click and choose "Copy content to clipboard" from the context menu.

Selecting files
Select Files

Selecting folders
Select Folders

Selecting files and folders together
Select Mixed Items

Selecting project
Select Mixed Items

Selecting solution
Select Mixed Items