all the codes as below:

    public partial class frmFileDialoge : Form
    {
        UltraGrid dgv = new UltraGrid();
        DataTable dtClone = new DataTable();
        DataTable m_dt=new DataTable();
        string strSql= "Select FormCode、UserCode、FormUS、FormCN、Access、[Add]、[Edit]、[Delete]、[Save]、Upload、Export、[Print]、[Audit]、[Approve]、DBNo from vw_getButtonauthority ";
        string strSql1 = "Select FormCode、UserCode、Access、[Add]、[Edit]、[Delete]、[Save]、Upload、Export、[Print]、[Audit]、[Approve]、DBNo from PB_userright ";
        string strCon = "Data Source=.;Initial Catalog=Test;Persist Security Info=True;User ID=sa;Password=sql";
        public frmFileDialoge()
        {
            InitializeComponent();
        }

        private void frmFileDialoge_Load(object sender、 EventArgs e)
        {
            SqlDataAdapter da = new SqlDataAdapter(strSql、 strCon);
            DataTable dt = new DataTable();
            da.Fill(dt);
            this.txDataGridViewEdit1.DataSource = dt;
        }

        private void button1_Click(object sender、 EventArgs e)
        {
            DataUpdateGrid();
        }

        private void DataUpdateGrid()
        {
            DataTable m_dt = this.GetGridDataTable();
            ExecuteSqlTran(m_dt);
            dgv.DataSource = dtClone;
        }

        private DataTable GetGridDataTable()
        {
            DataTable dt = new DataTable();
            dtClone = ((DataTable)this.txDataGridViewEdit1.DataSource).Clone();
            dt = (DataTable)this.txDataGridViewEdit1.DataSource;
            dgv = this.txDataGridViewEdit1;
            dt.Columns.Remove("FormUS");
            dt.Columns.Remove("FormCN");
            return dt;
        }

        private  void ExecuteSqlTran(DataTable m_DataTable)
        {
            using (SqlConnection m_Connection = new SqlConnection(strCon))
            {
                m_Connection.Open();
                SqlCommand m_Cmd = new SqlCommand();
                m_Cmd.Connection = m_Connection;
                SqlTransaction m_SqlTran = m_Connection.BeginTransaction();
                m_Cmd.Transaction = m_SqlTran;
                try
                {
                   m_Cmd.CommandText = strSql1;
                   m_Cmd.ExecuteNonQuery();
                   SqlDataAdapter m_SqlDataAdapter = new SqlDataAdapter(strSql1、 strCon );
                   SqlCommandBuilder SqlBuilder = new SqlCommandBuilder(m_SqlDataAdapter);
                   m_SqlDataAdapter.Update(m_DataTable);
                   m_SqlTran.Commit();
                }
                catch (Exception ex)
                {
                    m_SqlTran.Rollback();
                    m_Connection.Dispose();
                }
            }
        }

   }

this ultragid has  FormCode、UserCode、FormUS、FormCN、Access、[Add]、[Edit]、[Delete]、[Save]、Upload、Export、
[Print]、[Audit]、[Approve] and DBNo 15 columns,
I built a data schema, the column order is FormCode、UserCode、FormUS、FormCN、Access、[Add]、[Edit]、[Delete]、[Save]、Upload、Export、
[Print]、[Audit]、[Approve] and DBNo, and FormCode,UserCode and DBNo is hidden,when I save the data schema, I choose the second option.
but after execute the button_click the column order is changed,the Access column is moved before FormCN.
Now how to make the column order keep the previou order?

Thanks in advance!