Copy and Paste Data into Grid

I would like to be able to copy data from web page or Excel sheet and paste into data grid.

the use case is batch data entry.

Example: https://www.ag-grid.com/javascript-grid-clipboard/

 Paste from Clipboard 

 Paste to clipboard can only be done in the following ways:

• Press keys Ctrl+V while focus in on the grid with a single cell selected. The paste will then proceed starting at            the selected cell if multiple cells are to be pasted.
•  Press keys Ctrl+V while focus in on the grid with a range of cells selected. If the selected            range being pasted is larger than copied range, it will repeat if it fits evenly, otherwise it will just            copy the cells into the start of the range.