I have a datagridview with multiple columns and rows.
The first column contains a checkbox.
I want the user to be able to select multiple checkboxes and then perform an action.
For example if they select checkboxes in rows 1 and 2, the data from other columns in rows 1 and 2 can be selected and passed into a messagebox.
I know i need to use the checkbox_changed event to do this. However I am having trouble working out how to do this for multiple rows?