About Winform drag and drop:
https://docs.microsoft.com/en-us/dotnet/desktop/winforms/input-mouse/drag-and-drop
Winforms supports drag and drop, but it displays the Windows 2000/XP old school style.

Unlike win10, win10 can provide richer display effects. If you drag and drop a file on Win10, Win10 will display an icon and a text label. Then you can know your specific operation through the text label.
Picture 1: Drag a file:

Picture 2: When you hold down the Control or Alt key, the icon and text will also be changed.

Picture 3: Drag a file to application shortcut, it will display:

So if the drag and drop can provide an Icon and Text properties, the application can display a more detailed operating instruction to users, and the application will be more modern.
💥 💥 ⬇️⬇️ Scroll to the API proposal ⬇️⬇️💥 💥
About Winform drag and drop:
https://docs.microsoft.com/en-us/dotnet/desktop/winforms/input-mouse/drag-and-drop
Winforms supports drag and drop, but it displays the Windows 2000/XP old school style.
Unlike win10, win10 can provide richer display effects. If you drag and drop a file on Win10, Win10 will display an icon and a text label. Then you can know your specific operation through the text label.
Picture 1: Drag a file:
Picture 2: When you hold down the Control or Alt key, the icon and text will also be changed.
Picture 3: Drag a file to application shortcut, it will display:
So if the drag and drop can provide an Icon and Text properties, the application can display a more detailed operating instruction to users, and the application will be more modern.