FineUI Grid 缓存列显示隐藏状态

当列表字段过多时，需要隐藏掉一些，但是再次打开页面又显示出来了，FineUI没有提供缓存功能，那么自己动手，打开【ext-part2.js】找到

“if (Ext.grid.column.RowNumberer)”这里添加一个if代码如下

代码语言：javascript复制

if(Ext.grid.header.Container){
     Ext.override(Ext.grid.header.Container,{
                  onColumnCheckChange:function(checkItem, checked){
                        var header =Ext.getCmp(checkItem.headerId);
                        header[checked ?'show':'hide']();                        
                           F.customEvent("HeaderSelectedEven:id=" checkItem.headerId ";state=" checked ";grid=" this.grid.id);                        
                        }
                  });
}

效果是这样的

然后在页面的load事件里写

下面我们看WebBase里面的代码

代码语言：javascript复制

        /// <summary>
        /// 功能描述:保存dgv隐藏表头id
        /// 作　　者:huangzh
        /// 创建日期:2015-11-20 14:16:06
        /// 任务编号:
        /// </summary>
        /// <param name="strPageName">strPageName</param>
        /// <param name="strDgvName">strDgvName</param>
        /// <param name="strValues">strValues</param>
        public static void SaveDGVHideComs(string strPageName, string strDgvName, string strValues)
        {
            HttpCookie cookie = new HttpCookie(strPageName   "_"   strDgvName);
            cookie.Expires = DateTime.Now.AddMonths(12);
            cookie.Value = strValues;
            HttpContext.Current.Response.Cookies.Add(cookie);
        }

        /// <summary>
        /// 功能描述:获取DGV隐藏表头id
        /// 作　　者:huangzh
        /// 创建日期:2015-11-20 14:15:55
        /// 任务编号:
        /// </summary>
        /// <param name="strPageName">strPageName</param>
        /// <param name="strDgvName">strDgvName</param>
        /// <returns>返回值</returns>
        public static string GetDGVHideComs(string strPageName, string strDgvName)
        {
            HttpCookie cookie = HttpContext.Current.Request.Cookies[strPageName   "_"   strDgvName];
            if (cookie != null)
            {
                return cookie.Value;
            }
            else
            {
                return "";
            }
        }

        /// <summary>
        /// 功能描述:检查DGV隐藏表头
        /// 作　　者:huangzh
        /// 创建日期:2015-11-20 14:15:34
        /// 任务编号:
        /// </summary>
        /// <param name="strPageName">strPageName</param>
        /// <param name="strDgvName">strDgvName</param>
        /// <param name="streventArgument">streventArgument</param>
        public static void CheckDGVHideComs(string strPageName, string strDgvName, string streventArgument)
        {
            if (streventArgument.StartsWith("HeaderSelectedEven:"))
            {
                string strValues = streventArgument.Substring("HeaderSelectedEven:".Length);
                string[] values = strValues.Split(';');
                string strid = values[0].Split('=')[1];
                string strstate = values[1].Split('=')[1];
                string strDgvIds = values[2].Split('=')[1];
                string[] names = strDgvIds.Split('_');
                if (strDgvName == names[names.Length - 1])
                {
                    string strValue = GetDGVHideComs(strPageName, strDgvName);
                    List<string> lstValues = strValue.Split(',').ToList();
                    if (strstate.ToLower() == "true")
                    {
                        if (lstValues.Contains(strid))
                        {
                            lstValues.Remove(strid);
                        }
                    }
                    else
                    {
                        if (!lstValues.Contains(strid))
                        {
                            lstValues.Add(strid);
                        }
                    }

                    strValue = string.Join(",", lstValues);
                    SaveDGVHideComs(strPageName, strDgvName, strValue);
                }
            }
        }

        /// <summary>
        /// 功能描述:设置dgv隐藏表头
        /// 作　　者:huangzh
        /// 创建日期:2015-11-20 14:20:11
        /// 任务编号:
        /// </summary>
        /// <param name="dgv">dgv</param>
        /// <param name="strPageName">strPageName</param>
        public static void SetDGVHideCom(FineUI.Grid dgv, string strPageName)
        {
            string strValue = GetDGVHideComs(strPageName, dgv.ID);
            if (!string.IsNullOrEmpty(strValue))
            {
                dgv.HiddenColumns = strValue.Split(',');
            }
        }

代码就这么多，我们看下效果吧

缓存 grid load web 事件

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