FOR EACH LOOP IN VB.NET

  Protected Sub SecondGridBind()
        Dim row As GridViewRow
        For Each row In GridView1.Rows
            Dim lblid As HiddenField = row.FindControl("Label2")
            Dim str As String = "select * from  fact_dtl_mst where fact_id='" & lblid.Value & "'"           
        Next
    End Sub