How to disable a particular cell in table layout

I have a table matrix with rows and columns, and all are enabled with drag drop. we can drag and drop nodes to each cell.
Now I need to make the first cell say for col-1 and row-1 disabled for drag drop options. This cell needs a different colour fill too. Is there any inbuilt way to achieve this?

Change your GraphObject.drop event handler to call DraggingTool.doCancel. Add a Binding on either the background or Shape.fill or whatever to indicate it’s not a drop target.

You can also add GraphObject.dragEnter and dragLeave event handlers if you want to dynamically show that it’s not a target, perhaps by setting Diagram.currentCursor and/or by changing the appearance somehow.

Changed the Logic. Not needed now. Thanks for your time.