Updating MS Access from datagrid

Hi guys.Im looking to update my database from my datagrid.

My previous code is like this, so Im hoping sumone will assist me in doing so.

Protected Sub GridView1_SelectedIndexChanged(ByVal sender As Object, ByVal e As System.EventArgs) Handles GridView1.SelectedIndexChanged


        If IsNumeric(txtFirstName.Text) Then

            MsgBox("Please type your name in letters", MsgBoxStyle.Critical, "KNS System-Error")

            Exit Sub

        End If

        If IsNumeric(txtCity.Text) Then

            MsgBox("Please type your City in letters", MsgBoxStyle.Critical, "KNS System-Error")

            Exit Sub

        End If

        If Not IsNumeric(txtPostalCode.Text) Then

            MsgBox("Please type your PostalCode in numbers", MsgBoxStyle.Critical, "KNS-System-Error")

            Exit Sub

        End If

        If Not IsNumeric(txtCelnumber.Text) Then

            MsgBox("Please type your Cellphonenumber in numbers", MsgBoxStyle.Critical, "KNS-System-Error")

            Exit Sub

        End If

        da = New OleDbDataAdapter("Select * From Employees", cn)

        cb = New OleDbCommandBuilder(da)

        ds = New DataSet

        ds.Clear()

        da.Fill(ds, "Employees")

        dt = New DataTable

        dt = ds.Tables("Employees")

        Dim dr() As DataRow

        dr = dt.Select("EmpID = " & txtEmpID.Text & "")

        dr(0).BeginEdit()

        'dr(0)("Client_ID") = txtClientID.Text

        dr(0)("EFirstName") = txtFirstName.Text

        dr(0)("ESurname") = txtSurname.Text

        dr(0)("EDepartment") = cboDept.SelectedItem

        dr(0)("EPassword") = txtPassword.Text

        dr(0)("EConfirmPassword") = txtConfirm.Text

        dr(0)("EPhonenumber") = mtxtPhoneNumber.Text

        dr(0)("ECelnumber") = txtCelnumber.Text

        dr(0)("EAddress") = txtAddress.Text

        dr(0)("ECity") = txtCity.Text

        dr(0)("EPostalcode") = txtPostalCode.Text

        dr(0).EndEdit()

        da.Update(ds, "Employees")

        MsgBox("Record Edited Successfully")

        Disabling()

 End Sub

Problem is that this I did with text boxes.What Im looking for is updating directly from the datagrid.Thanx in advance