VB DataGridView 1 Row selection - vb.net

Question

I have a problem . When I load my form with my datagridview , I want the data to be transferred to the text fields when I click on the > at the most left of the datagridview.
Now, I have to select the content in the rows itself to select a row. How do I set it so it selects row based on the most left row selector? instead of having me click on the contents of the row ? dtguser_CellContentClick makes me select based on the content click right? What should it be if I want to select by entire row?
Private Sub dtguser_CellContentClick(ByVal sender As System.Object, ByVal e As System.Windows.Forms.DataGridViewCellEventArgs) Handles dtguser.CellContentClick
If GroupBox3.Enabled = False Then
Else
'this code will simply pass the value from the specific row selected by the user
lblid.Text = dtguser.CurrentRow.Cells(0).Value
serial.Text = dtguser.CurrentRow.Cells(0).Value
fname.Text = dtguser.CurrentRow.Cells(1).Value
lname.Text = dtguser.CurrentRow.Cells(2).Value
gender.Text = dtguser.CurrentRow.Cells(3).Value
address.Text = dtguser.CurrentRow.Cells(4).Value
contact.Text = dtguser.CurrentRow.Cells(5).Value
course.Text = dtguser.CurrentRow.Cells(6).Value
datestart.Text = dtguser.CurrentRow.Cells(7).Value
datecomplete.Text = dtguser.CurrentRow.Cells(8).Value
datecertify.Text = dtguser.CurrentRow.Cells(9).Value
nationality.Text = dtguser.CurrentRow.Cells(10).Value
email.Text = dtguser.CurrentRow.Cells(11).Value
certification.Text = dtguser.CurrentRow.Cells(12).Value
End If
End Sub

Answer 1

If you want to select the entire row set the selection mode to FullRowSelect.
dataGridView1.SelectionMode = DataGridViewSelectionMode.FullRowSelect;
If you want to get the data when you click the RowHeader (> button) then subscribe to the RowHeaderMouseClick event.
dataGridView1.RowHeaderMouseClick += new DataGridViewCellMouseEventHandler(dataGridView1_RowHeaderMouseClick);
Private Sub dataGridView1_RowHeaderMouseClick(sender As Object, e As DataGridViewCellMouseEventArgs)
// put your code for copying row data into the textboxes.
End Sub