private void button2_Click(object sender, EventArgs e)
 {
     string sid="";
     if (this.JSLX == "") return;
     if (this.JSLX == "单机")
     {
         sid = this.BarSysId;
     }
     else
     {
         sid = this.Bdid;
     }
     PrePayAdd ppa = new PrePayAdd();
     ppa.PrePayAddChange_+=new PrePayAdd.PrePayAddChange(ppa_PrePayAddChange_);
     ppa.BargOrBdId = sid;
     ppa.curUser = this.curUser;
     ppa.type = "add";  //新增
     ppa.ShowDialog();
 }
        private void button3_Click(object sender, EventArgs e)
        {
            if (this.dgv_prepay.SelectedRows.Count <= 0) return;
            if (this.dgv_prepay.SelectedRows[0].Cells["sysid"].Value == null) return;
            string sysid_ = this.dgv_prepay.SelectedRows[0].Cells["sysid"].Value.ToString().Trim();
            string settlesysid_ = this.dgv_prepay.SelectedRows[0].Cells["settlesysid"].Value.ToString().Trim();
            if (sysid_ == "") return;
            if (settlesysid_ != "") return;   //该记录是抵扣产生的

            string sid = "";
            if (this.JSLX == "") return;
            if (this.JSLX == "单机")
            {
                sid = this.BarSysId;
            }
            else
            {
                sid = this.Bdid;
            }

            if (Is_KaiPiao_PrePay(sid, sysid_))
            {
                MessageBox.Show("已开票,不允许修改");
                return;
            }

            PrePayAdd ppa = new PrePayAdd();
            ppa.PrePayAddChange_ += new PrePayAdd.PrePayAddChange(ppa_PrePayAddChange_);
            ppa.BargOrBdId = sid;
            ppa.sysid_ = sysid_;
            ppa.curUser = this.curUser;
            ppa.type = "edit";  //新增
            ppa.ShowDialog();
        }