你想在这里实现什么？只是动态添加列？

虽然您可以使用这些代码动态添加列和行

what do you want to achieve in this ? just to add columns dynamically?
though you can use these code to add columns and rows dynamically

Dim cmb(2) As DataGridViewComboBoxColumn
Dim txt As New DataGridViewTextBoxColumn


With DataGridView1
    For i As Int16 = 0 To 2
        cmb(i) = New DataGridViewComboBoxColumn
        cmb(i).HeaderText = "Data" & i
        .Columns.Add(cmb(i))

    Next
    .Columns.Add(txt)
    For i As Int16 = 0 To 3
        .Rows.Add()
    Next
End With