我想说这是查询,但事实并非如此。即使我们一步一步地完成这些查询,查询仍然顺利完成。即使.DataBind()方法也不会导致延迟。Internet Explorer滞后于IQueryable数据源。 Firefox和Chrome A-OK。提供视频证明
这里是我怎么知道它与我的IQueryable做,因为绑定源:
旧代码:使用SqlCommand的
- 调用存储过程和使用SqlAdapter填写一个新的DataTable。
- DataTable将被发送到每个DropDownList的方法中。 (有5个DDL)
- 每种方法都会将DataTable的行(是的,它们中的每一个)提供给IEnumerable。对于IEnumerable运行多个LINQ查询来筛选出我们想要的选项,包括.Distinct(IEqualityComparer)和.Sort(x => x [“RowName”]); (同样,每种方法都会执行此操作)。
- 一个新的DataTable将通过IEnumerable.CopyToDataTable被创建()(是的,再次,每个方法)
- 的DropDownList.DataSource将被设置为新的数据表,并然后将.DataBind()。
代码的这种可怕的嘲讽在IE中会很快完成。也许是一两分钟的思考时间。
下面是新的代码,在肉体:
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"));
现在,如果你看下面的视频,你会看到上面的代码工作相当不错,在Firefox和Chrome浏览器,然而它在MS IE中吹。通常我会很高兴,因为我不使用IE,但IE是公司的政策。还值得一提的是,滞后只发生在第一个DDL上,而不是后来的选择。此外,初始加载(加载所有数据,使用相同的方法并不加限制)也不需要很长时间来加载。
http://www.youtube.com/watch?v=-3QyNj87BSQ
一些请你,请告诉我为什么IE浏览器的行为就像这一点,我能做些什么来解决它。顺便说一句,它在IE7和IE8中的作用很差