[Solved] Both DataSource and DataSourceID are defined on 'GridView1'. Remove one definition.

when i click for bug an aplication.

it's always show this a notification

{"Both DataSource and DataSourceID are defined on 'GridView1'.  Remove one definition."}

view on browser aplication

Line 33: Line 34: GridView1.DataSource = dt Line 35: GridView1.DataBind() Line 36: End Sub Line 37:

this is an my vb code

    Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
        If Not Me.IsPostBack Then
            Me.BindGrid()
        End If
    End Sub

    Private Sub BindGrid()
        Dim dt As New DataTable()
        Dim query As String = "SELECT [KodeBarang], [NamaBarang], [Kuantitas], [Satuan], [Keterangan] FROM [TSPPInput] WHERE ([KodeSPP] = '" & TxtKodeSPP.Text & "')"
        Dim constr As String = ConfigurationManager.ConnectionStrings("CosmoConnectionString").ConnectionString
        Using con As New SqlConnection(constr)
            Using cmd As New SqlCommand(Query)
                cmd.Connection = con
                Using sda As New SqlDataAdapter(cmd)
                    sda.SelectCommand = cmd
                    sda.Fill(dt)
                End Using
            End Using
        End Using

        If dt.Rows.Count = 0 Then
            'If no records then add a dummy row.
            dt.Rows.Add()
        End If

        GridView1.DataSource = dt
        GridView1.DataBind()
    End Sub

please help me to clearing this problem.

regards.