//根据平台名称搜索
 public void FindByPlatformName()
 {
     try
     {
         ViewState["page"] = 1;
         List <Common.Entities.Platform> list = BLLPlatform.FindPlatformList(TriggerBox.Text.Trim(), Convert.ToInt32(Session["SecrecyLevel"]));
         Grid_Platform.RecordCount = list.Count();
         Grid_Platform.DataSource  = list;
         Grid_Platform.DataBind();
         btnDelete.Enabled = false;
     }
     catch (Exception ex)
     {
         publicmethod.SaveError(ex, this.Request);
     }
 }
 //根据平台级别查询
 public void FindByPlatformType()
 {
     try
     {
         ViewState["page"] = 2;
         List <Common.Entities.Platform> list = BLLPlatform.FindPlatformRank(DropDownListPlatformType.SelectedText, Convert.ToInt32(Session["SecrecyLevel"]));
         Grid_Platform.RecordCount = list.Count();
         Grid_Platform.DataSource  = list;
         Grid_Platform.DataBind();
         btnDelete.Enabled = false;
     }
     catch (Exception ex)
     {
         publicmethod.SaveError(ex, this.Request);
     }
 }
        //全选按钮
        protected void btnSelect_All_Click(object sender, EventArgs e)
        {
            Grid_Platform.SelectAllRows();
            int[] select = Grid_Platform.SelectedRowIndexArray;
            int   m;
            //取整数(不是四舍五入,全舍)
            int Pages = (int)Math.Floor(Convert.ToDouble(Grid_Platform.RecordCount / this.Grid_Platform.PageSize));

            if (Grid_Platform.PageIndex == Pages)
            {
                m = (Grid_Platform.RecordCount - this.Grid_Platform.PageSize * Grid_Platform.PageIndex);
            }
            else
            {
                m = this.Grid_Platform.PageSize;
            }
            bool isCheck = false;

            for (int i = 0; i < m; i++)
            {
                if (CBoxSelect.GetCheckedState(i) == false)
                {
                    isCheck = true;
                }
            }
            if (isCheck)
            {
                foreach (int item in select)
                {
                    CBoxSelect.SetCheckedState(item, true);
                }
                btnDelete.Enabled  = true;
                btnSelect_All.Text = "取消全选";
            }
            else
            {
                foreach (int item in select)
                {
                    CBoxSelect.SetCheckedState(item, false);
                }
                btnDelete.Enabled  = false;
                btnSelect_All.Text = "全选";
            }
        }