ต้องการ กดปุ่ม button แล้วให้เพิ่ม คอลัมน์ลงใน datagrid ต้องเขียนโค้ดประมาณไหนดีคะ แนะนำหน่อยค่ะ ^^

 Me.ProductBindingSource.AddNew()

Public Class Form3

    Private Sub Form3_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
        Dim Column1 As DataGridViewTextBoxColumn = New DataGridViewTextBoxColumn()
        Column1.Name = "Column1"
        Column1.HeaderText = "Column1"

        Dim Column2 As DataGridViewTextBoxColumn = New DataGridViewTextBoxColumn()
        Column2.Name = "Column2"
        Column2.HeaderText = "Column2"

        DataGridView1.Columns.Add(Column1)
        DataGridView1.Columns.Add(Column2)
    End Sub
    Private Sub AddButton_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles AddButton.Click
        Dim NewRow As DataGridViewRow = New DataGridViewRow()
        Dim Cell1 As DataGridViewCell = New DataGridViewTextBoxCell()
        Dim Cell2 As DataGridViewCell = New DataGridViewTextBoxCell()

        Cell1.Value = "Test1"
        Cell2.Value = "Test2"

        NewRow.Cells.Add(Cell1)
        NewRow.Cells.Add(Cell2)

        DataGridView1.Rows.Add(NewRow)
    End Sub



End Class