asp.net使用原生控件实现自定义列导出功能的方法

            DataTable dt = employeesServices.GetEmployeesDataTable();
            Dictionary<string, bool> ckbInfoList = new Dictionary<string, bool>();
            foreach (var control in Page.Controls)
            {
                if (control.GetType().ToString() == "System.Web.UI.HtmlControls.HtmlForm")
                {
                    HtmlForm form = (HtmlForm)control;
                    foreach (var item in form.Controls)
                    {
                        if (item is CheckBox)
                        {
                            CheckBox ckb = (CheckBox)item;
                            if (!ckb.Checked)
                            {
                                ckbInfoList.Add(ckb.ID, false);
                            }
                            else
                            {
                                ckbInfoList.Add(ckb.ID,true);
                            }
                        }
                    }
                }
            }
            //遍历GridView列，根据Dictionary提供的内容来决定是否隐藏。
            foreach (var control in Page.Controls)
            {
                if (control.GetType().ToString() == "System.Web.UI.HtmlControls.HtmlForm")
                {
                    HtmlForm form = (HtmlForm)control;
                    foreach (var item in form.Controls)
                    {
                        if (item.GetType().ToString() == "System.Web.UI.WebControls.GridView")
                        {
                            GridView gridView = (GridView)item;
                            foreach (BoundField col in gridView.Columns)
                            {
                                foreach (var keyValue in ckbInfoList)
                                {
                                    if (keyValue.Key == col.DataField)
                                    {
                                        col.Visible = Convert.ToBoolean(keyValue.Value);
                                    }
                                }
                            }
                        }
                    }
                }
            }
            gv.DataSource = dt;
            gv.DataBind();