มีปัญหาเกี่ยวกับการทำงานกับ Thread กับ Datagridview Vb2005

Imports System
Imports System.Threading
Imports System.IO
Imports System.Data
Imports System.Data.OleDb
Imports System.Data.OracleClient

Public Class Form3

    Dim Thread1, Thread_Member, Thread_Loan As System.Threading.Thread
    Dim Str_Query As String


    Private Sub ProcessData()
        Dim StrPathAccess1, StrPathAccess2 As String

        Dim DirectoryFile As FileInfo
        Dim Dr_Prov As DataRow = Nothing

        StrPathAccess1 = "D:\database\"

        ConOracle.Open()
        Str_Query = "SELECT * FROM tbl_province ORDER BY prov_id ASC"
        Da_Oracle.SelectCommand = New OracleCommand(Str_Query, ConOracle)
        Try
            Da_Oracle.Fill(Ds_Oracle, "province")
            Dim i, x As Integer
            For i = 0 To Ds_Oracle.Tables("province").Rows.Count - 1
                Dr_Prov = Ds_Oracle.Tables("province").Rows(i)

                StrPathAccess2 = StrPathAccess1 & Dr_Prov("prov_name_eng").ToString & "\women_fund.accdb"
                DirectoryFile = New FileInfo(StrPathAccess2)
                If DirectoryFile.Exists = True Then
                    LblProvince.Text = "กำลังประมวลผลจังหวัด" & Dr_Prov("prov_name").ToString

                    StrConAccess = "Provider=Microsoft.ACE.OLEDB.12.0;Data Source=" & StrPathAccess2 & ";Persist Security Info=False;"
                    Call ProcessRptMember(Dr_Prov("prov_id").ToString)
                    'DgvProcess.Rows(0).Cells(1).Value = i
                    'For x = 1 To 100
                    '    DgvProcess.Rows(0).Cells(1).Value = x & " %"
                    '    Me.Refresh()
                    '    System.Threading.Thread.Sleep(100)
                    'Next
                End If
                
                StrPathAccess2 = ""
            Next
        Catch ex As Exception
            MessageBox.Show(ex.Message)
        End Try
        LblProvince.Text = ""
        ConOracle.Close()
    End Sub


    Private Sub Form3_FormClosing(ByVal sender As Object, ByVal e As System.Windows.Forms.FormClosingEventArgs) Handles Me.FormClosing
        Thread1.Abort()
    End Sub

    Private Sub Form3_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
        DgvProcess.Rows.Add(3)
        With DgvProcess

            .Rows(0).Cells(0).Value = "สมาชิก"
            .Rows(1).Cells(0).Value = "เงินกู้"
        End With
        Control.CheckForIllegalCrossThreadCalls = False


    End Sub

    Private Sub BtnProcess_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles BtnProcess.Click
        Dim Thread1 As New Thread(AddressOf ProcessData)
        Thread1.Start()
    End Sub
End Class

    Public Sub ProcessRptMember(ByVal province As String)
        Dim i As Integer
        For i = 1 To 100
            With Form3
                .DgvProcess.Rows(0).Cells(1).Value = i & " %"
                System.Threading.Thread.Sleep(100)
            End With
        Next
   
    End Sub