Your question is quite confusing but I assume you want your gridview to move the cursor/focus to the next cell after pressing the "enter" key instead of going to the next row (in other words, do what the "tab" key).
If that is the case then for me the easiest way to do that is to trap the key in KeyDown event and send the key that you need to be pressed
Private Sub DataGridView1_KeyDown(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyEventArgs) Handles DataGridView1.KeyDown
If e.KeyCode = Keys.Enter Then
e.SuppressKeyPress = True
This might interfere with other things you need to do but can be adjusted accordingly.