comboBoxEX 控件奇怪的问题

Question

程序中有一个comboBoxEX ，经过绑定之后 text属性 有一个具体的值，但是 items.count==0 这是怎么回事？

Answer 1

你问问comboBoxEX的作者,是不是忘记更新Count属性了

Answer 2

我是form_load 运行到最后一行，然后使用quick watch 查看，属性如上面所说，这是怎么回事

Answer 3

我没有用绑定，而是从结果集一条一条添加到combox 的

Answer 4

 private void 录入保健EditForm_Load(object sender, EventArgs e)
        {
            this.textBox手牌编号.Text = this.acc.手牌编号;
            this.textBox保健名称.Text = this.保健点选.保健项.项目名称;
            DataBindTools.Bind_知识名称(this.comboBoxEx起钟类型, CommonConfigs.ProgId, "起钟类型");
            this.comboBoxEx起钟类型.SelectedIndex = 0;           
            this.BindComBox钟房编号();            this.OnRefresh();
        }        private void OnRefresh()
        {
                                   
            this.BindComBox技师(this.comboBox技师编号,this.comboBoxEx起钟类型.Text=="轮牌");            
            this.dateTimeInput落钟时间.Value = DateTime.Now;
            this.dateTimeInput起钟时间.Value = this.dateTimeInput落钟时间.Value.AddMinutes(-this.保健点选.保健项.时间);
        }-------------------------------
private void BindComBox技师(ComboBox cbox, bool 轮牌)
        {
            cbox.Items.Clear();            if (轮牌)
            {              
                保健价目DataSet.保健项目Row a = ConsoleService.Instance.保健价目DataSet.保健项目.First(p => p.项目名称 == this.textBox保健名称.Text);          
                var q = from c in this.SpringDB.技师_排钟队列.Where(p => p.钟牌状态 == "正常")
                        join o in this.SpringDB.技师_当前状态.Where(p => p.当前状态 == "空闲") on c.技师编号
                        equals o.技师编号
                        select new
                        {
                            c.排队序号,
                            c.消费类别,
                            c.钟牌状态,
                            c.技师编号
                        };                if (q == null || q.Count() <= 0)
                    return;                if (q.Where(p => p.消费类别 == a.消费类别 && p.钟牌状态 == "正常").Select(p => p.排队序号).Count() > 0)
                {
                    DateTime firstTime = (DateTime)q.Where(p => p.消费类别 == a.消费类别 && p.钟牌状态 == "正常").Select(p => p.排队序号).Min();
                    var f = q.Where(p => p.消费类别 == a.消费类别).FirstOrDefault(p => p.排队序号 == firstTime);                    cbox.Items.Add(f.技师编号);
                   
                }
            }
            else
            {
                foreach (技师_当前状态 s in this.SpringDB.技师_当前状态.Where(p => p.当前状态 == "空闲"))
                {
                    cbox.Items.Add(s.技师编号);
                }
              
            }
            if (this.comboBox技师编号.Items.Count > 0)
                this.comboBox技师编号.SelectedIndex = 0;
        }-----------------------------  private void comboBoxEx起钟类型_SelectedIndexChanged(object sender, EventArgs e)
        {
            const string 轮牌 = "轮牌";
            this.BindComBox技师(this.comboBox技师编号, this.comboBoxEx起钟类型.Text == 轮牌);
            //this.comboBox技师编号.Enabled = this.comboBoxEx起钟类型.Text == 轮牌 ? false : true;          
        }