How do I link data grid view into chart ?

See more:

VB

DataGridView

chart

what i have: data in GDV (column1, Column2)
aim: link all data present in dgv to the chart, displaying the line graph
problem: can't load the graph

What I have tried:

 Public Class Form1
    Private Sub Button1_Click(sender As Object, e As EventArgs) Handles Button1.Click

        ''Me.DataGridView1.Rows.Add(TextBox1.Text, TextBox1.Text * TextBox3.Text)
        Dim x As Integer = Integer.Parse(TextBox1.Text)
        Dim y As Integer = Integer.Parse(TextBox3.Text)
        Dim xy As Integer = x * y

        Me.DataGridView1.Rows.Add(x, xy)

    End Sub
  
    Private Sub Button2_Click(sender As Object, e As EventArgs) Handles Button2.Click
        Dim data1 As Integer
        Dim data2 As Integer


        Chart1.DataSource = DataGridView1
        data1 = Me.DataGridView1.Columns(1)
        ''data2 = Me.DataGridView1.Columns(2)


        Chart1.Series("Skin Fact").Points.AddXY(data1, data2)

        Chart1.DataBind()

        ''Chart1.Series("Skin Fact").Points.AddXY(Convert.ToDouble(Column1), Convert.ToDouble(Column2))

        Chart1.Visible = True

    End Sub
End Class