Posted 1 April 2019, 7:44 am EST
You can achieve this by handling the copying and pasting events of Flexgrid. In the copying event, you can copy the value of the cell and store it in a variable.
In pasting event, you can use your prepareCellForEdit event handler and add these values as checked items for Multiselect control. Please refer to the updated sample below:
https://stackblitz.com/edit/angular-korgte?file=app/app.component.ts
I have updated the sample, added copying and pasting event handlers and on line 60, instead of treating the cell data as a single value, I treated it as multiple values from the combo box.
Please let me know if it works for you.