判断DataGridView标题是否为某表中的字段

  目前电子表格导入到DataGridView， 同时该表数据保存到对应的SQL数据库中，怕导入模版的表头有人改动，选判断DataGridView标题是否为对应表的字段。这样如何判断。
 Me.DataGridView1.DataSource = ds.Tables("ex")
        Call cn_sql()
        sqlstr = "select *  from t_gpicc_gz "
        sqladp = New SqlDataAdapter(sqlstr, conn)
        cmdb = New SqlCommandBuilder(sqladp)
        Dim ds1 As DataSet = New DataSet
        sqladp.Fill(ds1, "t_gpicc_gz")
          Dim dg As DataGridView = DataGridView1
      
        For ri = 0 To dg.RowCount - 2
            newrow = ds1.Tables("t_gpicc_gz").NewRow()
            For ci = 0 To dg.ColumnCount - 1
                If dg.Columns(ci).Visible = True Then
                    Dim hename = dg.Columns(ci).HeaderText.Trim.ToString   ’DataGridViews标题
                    newrow(hename) = dg.Rows(ri).Cells(ci).Value   '对应表添加数据，想在这儿判断一下，是否为该表字段
                    ' MsgBox(ds.Tables("t_gpicc_gz").Rows(ri)(ci))
                  
                End If
            Next
            ds1.Tables("t_gpicc_gz").Rows.Add(newrow)