关于datagridview和datatable绑定的有关问题

关于datagridview和datatable绑定的问题
情况是这样的，我现在datagridview在代码添加了10列，我又生成了一个只有8列的datatable，然后把datatable的8列绑定在datagridview的前8列，但是绑定好以后datagridview列的顺序发生变化了，最后没有绑定的2列跑到前面去了，而且我再次触发绑定事件，datagridview里的值还能移动。
所以我在datatable里又添加了2列，再次绑定，这次就变好了。
求解
------解决方案--------------------

找到 dgv 的  DataBindingComplete 事件

/// <summary>

        /// dgvCost_FeeInfo_Income数据绑定时固定列的位置

        /// </summary>

        /// <param name="sender"></param>

        /// <param name="e"></param>

        private void dgvCost_FeeInfo_Income_DataBindingComplete(object sender, DataGridViewBindingCompleteEventArgs e)

        {

            dgvCost_FeeInfo_Income.Columns["dgvchk_R"].DisplayIndex = 0;


            dgvCost_FeeInfo_Income.Columns["dgvtxtCostName_R"].DisplayIndex = 1;

            dgvCost_FeeInfo_Income.Columns["dgvtxtChargeCode_R"].DisplayIndex = 2;


            dgvCost_FeeInfo_Income.Columns["dgvtxtShouldMoney_R"].DisplayIndex = 3;

            dgvCost_FeeInfo_Income.Columns["dgvcboCustomsRate_R"].DisplayIndex = 4;

            dgvCost_FeeInfo_Income.Columns["dgvtxtCustomsMoney_R"].DisplayIndex = 5;

            dgvCost_FeeInfo_Income.Columns["dgvtxtRealMoney_R"].DisplayIndex = 6;


            dgvCost_FeeInfo_Income.Columns["dgvtxtCurrency_Id_R"].DisplayIndex = 7;

            dgvCost_FeeInfo_Income.Columns["dgvtxtCurrency_Name_R"].DisplayIndex = 8;

            dgvCost_FeeInfo_Income.Columns["dgvtxtCurrency_Rate_R"].DisplayIndex = 9;


            dgvCost_FeeInfo_Income.Columns["dgvtxtPaymode_R"].DisplayIndex = 10;

            dgvCost_FeeInfo_Income.Columns["dgvtxtCheckNumber_R"].DisplayIndex = 11;

            dgvCost_FeeInfo_Income.Columns["dgvtxtCode_R"].DisplayIndex = 12;

            dgvCost_FeeInfo_Income.Columns["dgvtxtPayee_R"].DisplayIndex = 13;


            dgvCost_FeeInfo_Income.Columns["dgvtxtInputMan_R"].DisplayIndex = 14;

            dgvCost_FeeInfo_Income.Columns["dgvtxtInputDate_R"].DisplayIndex = 15;

            dgvCost_FeeInfo_Income.Columns["dgvtxtInputDepartment_R"].DisplayIndex = 16;


            dgvCost_FeeInfo_Income.Columns["dgvtxtCheckCostMan_R"].DisplayIndex = 17;

            dgvCost_FeeInfo_Income.Columns["dgvtxtCheckCostDate_R"].DisplayIndex = 18;

            dgvCost_FeeInfo_Income.Columns["dgvtxtCheckCostDepartment_R"].DisplayIndex = 19;

            dgvCost_FeeInfo_Income.Columns["dgvtxtFlag_CheckCost_R"].DisplayIndex = 20;


            dgvCost_FeeInfo_Income.Columns["dgvtxtManagerCheckCostMan_R"].DisplayIndex = 21;

            dgvCost_FeeInfo_Income.Columns["dgvtxtManagerCheckCostDate_R"].DisplayIndex = 22;

            dgvCost_FeeInfo_Income.Columns["dgvtxtManagerCheckCostDepartment_R"].DisplayIndex = 23;

            dgvCost_FeeInfo_Income.Columns["dgvtxtFlag_ManagerCheckCost_R"].DisplayIndex = 24;



            dgvCost_FeeInfo_Income.Columns["dgvtxtClosingCostMan_R"].DisplayIndex = 25;

            dgvCost_FeeInfo_Income.Columns["dgvtxtClosingCostDate_R"].DisplayIndex = 26;

            dgvCost_FeeInfo_Income.Columns["dgvtxtFlag_ClosingCost_R"].DisplayIndex = 27;