沙发 我自个写的
        var query = from c in this.Control.Controls.Cast<Control>()
                        let ctrls1 = c.Controls.Cast<Control>()
                        from c1 in ctrls1
                        let ctrls2 = c1.Controls.Cast<Conltrol>()
                        where !c.HasChildren && !(c is UCode)
                        from c2 in ctrls2
但是最后的select不知道怎么把 c 和 c2 连接起来了
对了 再加个要求Linq返回的序列必须是 IEnumrable<Control>

咋没有将帖子提前功能了？

up

            var controls = (from Control c in panel1.Controls

                            where !c.HasChildren

                            select c).Union(from Control tc in panel1.Controls

                                            let tabPages = tc.Controls.Cast<Control>()

                                            from Control tp in tabPages

                                            let tps = tp.Controls.Cast<Control>()

                                            from tpCtrl in tps

                                            where tc is TabControl

                                            select tpCtrl);

mark

其实我的初衷是不想遍历 panel.Controls两次
难道一次遍历搞不定了吗

var controls = (from Control c in panel1.Controls

                            where !c.HasChildren

                            select c).Union(from Control tc in panel1.Controls

                                            let tabPages = tc.Controls.Cast<Control>()

                                            from Control tp in tabPages

                                            let tps = tp.Controls.Cast<Control>()

                                            from tpCtrl in tps

                                            where tc is TabControl

                                            select tpCtrl);

借用。。。。