我想說這是查詢,但事實並非如此。即使我們一步一步地完成這些查詢,查詢仍然順利完成。即使.DataBind()方法也不會導致延遲。Internet Explorer滯後於IQueryable數據源。 Firefox和Chrome A-OK。提供視頻證明
這裏是我怎麼知道它與我的IQueryable做,因爲綁定源:
舊代碼:使用SqlCommand的
- 調用存儲過程和使用SqlAdapter填寫一個新的DataTable。
- DataTable將被髮送到每個DropDownList的方法中。 (有5個DDL)
- 每種方法都會將DataTable的行(是的,它們中的每一個)提供給IEnumerable。對於IEnumerable運行多個LINQ查詢來篩選出我們想要的選項,包括.Distinct(IEqualityComparer)和.Sort(x => x [「RowName」]); (同樣,每種方法都會執行此操作)。
- 一個新的DataTable將通過IEnumerable.CopyToDataTable被創建()(是的,再次,每個方法)
- 的DropDownList.DataSource將被設置爲新的數據表,並然後將.DataBind()。
代碼的這種可怕的嘲諷在IE中會很快完成。也許是一兩分鐘的思考時間。
下面是新的代碼,在肉體:
IQueryable<Expose_LotRuns> elr = DB.Expose_LotRuns;
if (iTechID > 0)
elr = elr.Where(x => x.Master_LotRuns.Flows.CD_Techs.ID == iTechID);
if (iFlowID > 0)
elr = elr.Where(x => x.Master_LotRuns.Flows.ID == iFlowID);
if (iToolID > 0)
elr = elr.Where(x => x.Master_LotRuns.Tools.ID == iToolID);
if (iOperationID > 0)
elr = elr.Where(x => x.Master_LotRuns.Operations.ID == iOperationID);
if (iReticleID > 0)
elr = elr.Where(x => x.Reticles.ID == iReticleID);
var techs = from x in elr
where (x.Master_LotRuns.Flows.CD_Techs != null)
group x by new
{
x.Master_LotRuns.Flows.CD_Techs.ID,
x.Master_LotRuns.Flows.CD_Techs.Technology
} into y
orderby y.Key.Technology
select new { y.Key.ID, y.Key.Technology };
var flows = from x in elr
//where (x.Master_LotRuns.Flows != null)
group x by new
{
x.Master_LotRuns.Flows.ID,
x.Master_LotRuns.Flows.Flow
} into y
orderby y.Key.Flow
select new { y.Key.ID, y.Key.Flow };
var tools = from x in elr
//where (x.Master_LotRuns.Tools != null)
group x by new
{
x.Master_LotRuns.Tools.ID,
x.Master_LotRuns.Tools.Tool
} into y
orderby y.Key.Tool
select new { y.Key.ID, y.Key.Tool };
var ops = from x in elr
//where (x.Master_LotRuns.Operations != null)
group x by new
{
x.Master_LotRuns.Operations.ID,
x.Master_LotRuns.Operations.Operation
} into y
orderby y.Key.Operation
select new { y.Key.ID, y.Key.Operation };
var rets = from x in elr
//where (x.Reticles != null)
group x by new { x.Reticles.ID, x.Reticles.Reticle } into y
orderby y.Key.Reticle
select new { y.Key.ID, y.Key.Reticle };
ddlTechs.DataTextField = "Technology";
ddlTechs.DataValueField = "ID";
ddlTechs.DataSource = techs;
ddlTechs.DataBind();
ddlTechs.Items.Insert(0, new ListItem("Any", "0"));
ddlFlows.DataTextField = "Flow";
ddlFlows.DataValueField = "ID";
ddlFlows.DataSource = flows;
ddlFlows.DataBind();
ddlFlows.Items.Insert(0, new ListItem("Any", "0"));
ddlTools.DataTextField = "Tool";
ddlTools.DataValueField = "ID";
ddlTools.DataSource = tools;
ddlTools.DataBind();
ddlTools.Items.Insert(0, new ListItem("Any", "0"));
ddlOpers.DataTextField = "Operation";
ddlOpers.DataValueField = "ID";
ddlOpers.DataSource = ops;
ddlOpers.DataBind();
ddlOpers.Items.Insert(0, new ListItem("Any", "0"));
ddlReticles.DataTextField = "Reticle";
ddlReticles.DataValueField = "ID";
ddlReticles.DataSource = rets;
ddlReticles.DataBind();
ddlReticles.Items.Insert(0, new ListItem("Any", "0"));
現在,如果你看下面的視頻,你會看到上面的代碼工作相當不錯,在Firefox和Chrome瀏覽器,然而它在MS IE中吹。通常我會很高興,因爲我不使用IE,但IE是公司的政策。還值得一提的是,滯後只發生在第一個DDL上,而不是後來的選擇。此外,初始加載(加載所有數據,使用相同的方法並不加限制)也不需要很長時間來加載。
http://www.youtube.com/watch?v=-3QyNj87BSQ
一些請你,請告訴我爲什麼IE瀏覽器的行爲就像這一點,我能做些什麼來解決它。順便說一句,它在IE7和IE8中的作用很差