What's The Best Method to Fill DataGridView?

[witecloner]

Hai all, Could any body tell me what's the best method to fill DataGridView DataSource (at least for 1000 record)? Using DataReader or DataSet? if some one know other method please tell me...

Should i use delegate for fill datagridview for multiuser? em...here that's example :

Partial Public Class FormCustomer

    Public Delegate Function DelegateData() As BindingSource

    Private Function CallBinding() As BindingSource
        Try
            If SqlConnection1.State = ConnectionState.Closed Then
                SqlConnection1.Open()
            End If
            SqlDataAdapter3.Fill(DataSet2, "Customer")
            BindingSource1.DataSource = DataSet2
            BindingSource1.DataMember = "Customer"
            Return BindingSource1
        Catch ex As Exception
            MessageBox.Show(ex.ToString, "Error State On : CallBinding() Method", MessageBoxButtons.OK, MessageBoxIcon.Warning)
            Return Nothing
        Finally
            If SqlConnection1 IsNot Nothing Then
                SqlConnection1.Close()
            End If
        End Try
    End Function

   Public Sub LoadData()
        Dim obj_CallBinding As DelegateData
        Try
            obj_CallBinding = AddressOf CallBinding
            Me.DGVCustomer.DataSource = obj_CallBinding.Invoke()
            FormatStyle() '--This routine used for format the datagridview style
        Catch ex As Exception
            MessageBox.Show(ex.ToString, "Error State On : SynchronousData() Method")
        End Try
    End Sub

  Private Sub FormatStyle()
        Try
            If BindingSource1.Count > 0 Then
                With Me.DGVCustomer
                    .Columns("CustomerUID").Visible = False
                    .Columns("ContactPerson").Visible = False
                    .Columns("Jan").Visible = False
                    .Columns("Feb").Visible = False
                    .Columns("Mar").Visible = False
                    .Columns("Apr").Visible = False
                    .Columns("Mei").Visible = False
                    .Columns("Jun").Visible = False
                    .Columns("Jul").Visible = False
                    .Columns("Agt").Visible = False
                    .Columns("Sep").Visible = False
                    .Columns("Okt").Visible = False
                    .Columns("Nov").Visible = False
                    .Columns("Des").Visible = False
                    .Columns("Flag").Visible = False
                    .Columns("Modified").Visible = False

                    'Formating Columns and Rows
                    .Columns("CustomerID").HeaderText = "Customer"
                    .Columns("CustomerName").HeaderText = "Nama Customer"
                    .Columns("ParentID").HeaderText = "Konsolidasi"
                    .Columns("Address").HeaderText = "Alamat"
                    .Columns("City").HeaderText = "Kota"

                    .Columns("CustomerID").Width = 75
                    .Columns("CustomerName").Width = 275
                    .Columns("ParentID").Width = 75
                    .Columns("Address").Width = 315
                    .Columns("City").Width = 145
                    .Columns("Operator").Width = 75

                    .ReadOnly = True
                    .MultiSelect = False
                    .SelectionMode = DataGridViewSelectionMode.FullRowSelect
                    .AllowUserToDeleteRows = False
                    .AlternatingRowsDefaultCellStyle.BackColor = Color.LightYellow
                    .RowsDefaultCellStyle.ForeColor = Color.Black
                End With
            End If
        Catch ex As Exception
            MessageBox.Show(ex.ToString, "Error State On : FormatStyle() Method", MessageBoxButtons.OK, MessageBoxIcon.Warning)
        End Try
    End Sub

End Class

Public Class FormCustomer

  Private Sub FormCustomer_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
        Me.WindowState = FormWindowState.Maximized
        Me.LoadData()
    End Sub

End Class

i Have try this code and it's still not to fast when first time loading the data.
Thank's