Trying to transfer from a textbox on a popup form to a DGV on another form

[RyanB92]

I am trying to allow the user to input into a textbox on an "addform" and when they click "save" the add form is closed and the user input is put into an associated row / cell in a datagridview table.

I have already set up a method to add new rows to the DGV depending on when the user clicks add. They can also delete rows if the row >1.

I cannot seem to find any help online regarding this. I've seen a few for c# but cannot seem to find any relating to c++.

if you need any of my code I would be happy to provide.