DataGridView - Focus a specific cell

Set the Current Cell like:

DataGridView1.CurrentCell = DataGridView1.Rows[rowindex].Cells[columnindex]

or

DataGridView1.CurrentCell = DataGridView1.Item("ColumnName", 5)

and you can directly focus with Editing by:

dataGridView1.BeginEdit(true)

you can set Focus to a specific Cell by setting Selected property to true

dataGridView1.Rows[rowindex].Cells[columnindex].Selected = true;

to avoid Multiple Selection just set

dataGridView1.MultiSelect = false;

the problem with datagridview is that it select the first row automatically so you want to clear the selection by

grvPackingList.ClearSelection();
dataGridView1.Rows[rowindex].Cells[columnindex].Selected = true;  

other wise it will not work