//计算
        private void btCal_Click(object sender, EventArgs e)
        {
            DataTable dt = (DataTable)this.dataGridViewEx1.DataSource;

            fm.Calculate(dt, false);
            this.tbResultFee.Text = fm.GetResult(dt);
        }
 //计算
 private void toolStripButton10_Click(object sender, EventArgs e)
 {
     this.toolStrip1.Focus();
     fm.Calculate((DataTable)this.dataGridViewEx1.DataSource);
     ChargeColWidth();
 }