You can extract the data from an excel file (without opening it) and use it inside an AutoCAD file for drawing objects;
This is just an example on How to use the data from Excel Cells inside the CAD drawing to Automate the Autocad drawing process.
Step 1: Steps
Go to VBA Editor and insert a module (Module1)
Paste following code inside (screenshot)
Save the macro as datafromexcel.dvb (or any other name you prefer with *.dvb extension)
save the drawing filecreate an Excel file (in your D drive) and enter some text/number inside cell (A:1) then save it and close.
Insert a toolbar and a button inside CAD file (refer previous articles)
link vba with button using the code ^C^C_-vbarun;Module1.clickedSet up the autoload