Im making an app for touch screens, I want to make it so when you click on the rows of the grid they will get accumulated and processed later. I have to say I have fullRowSelect instead of CellSelect

So far Im trying for cell click event

But it will not accumulate selected cells. Any idea why?

Thanks in advance !

private void DataGridView_CellClick(object sender, DataGridViewCellEventArgs e)
{
    if (e.RowIndex >= 0 && e.ColumnIndex >= 0)
    {
        dataGridView[e.ColumnIndex, e.RowIndex].Selected = true;
    }
}

Accumulate cell selection