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POMVC 2 - I have a control that uses a lot of HTML. How do I improve the performance?
 

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  1. POMVC 2 - I have a control that uses a lot of HTML. How do I improve the performance?
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    <p>I am developing a product with users who up until now have been using Excel and they want my MVC application to be similar to that. They like the visual impact of seeing annual leave, so I have developed a scrollable table which looks like this; <img src="https://i.stack.imgur.com/ydUYS.jpg" alt="enter image description here"></p> <p>The table is going to be about 300 cells across, and I might have 15 people to display this information, so you can see this could get very large indeed. I mentioned to them before I built the control that there would be performance issues. But now they like the product and want it to load more quickly. I would not be surprised if the code I wrote could be refactored. No doubt it could be written better anyway, and maybe performance can be improved as well, so I will show you that. However I suspect the real problem is too much HTML. What are my other options? I am not yet familiar with Silverlight or HTML5, although I am happy to look into it if someone can provide me with some good links. My webpage has this markup;</p> <pre><code>&lt;% if (Model.cvm != null &amp;&amp; Model.cvm.Lines != null &amp;&amp; Model.cvm.Lines.Count &gt; 0) { %&gt; &lt;table cellpadding="0" cellspacing="0"&gt; &lt;tr&gt; &lt;td&gt; &lt;table cellpadding="0" cellspacing="0" id="TeamNames"&gt;&lt;!-- Table to display names of team members --&gt; &lt;tr&gt; &lt;td style="height:65px"&gt;&lt;/td&gt; &lt;/tr&gt; &lt;% foreach (SHP.Models.CalendarViewModel.CalendarLine cl in Model.cvm.Lines) {%&gt; &lt;tr&gt; &lt;td align="right"&gt;&lt;%: cl.Name%&gt;&lt;/td&gt; &lt;/tr&gt; &lt;%} %&gt; &lt;/table&gt; &lt;/td&gt; &lt;td&gt; &lt;div id="pageWidthCalendar"&gt;&lt;!-- Table to display a scrollable grid of the annual leave calendar --&gt; &lt;table id="ScheduledLeaveCalendar"&gt; &lt;%: Html.DisplayFor(x =&gt; x.cvm.Header1)%&gt; &lt;%: Html.DisplayFor(x =&gt; x.cvm.Header2)%&gt; &lt;%: Html.DisplayFor(x =&gt; x.cvm.Header3)%&gt; &lt;%: Html.DisplayFor(x =&gt; x.cvm.Lines)%&gt; &lt;/table&gt; &lt;/div&gt;&lt;!-- pageWidthCalendar - puts scrollbars on the calendar control --&gt; &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt; </code></pre> <p>My Calendar Lines Display Template has this markup;</p> <pre><code>&lt;%@ Control Language="C#" Inherits="System.Web.Mvc.ViewUserControl&lt;SHP.Models.CalendarViewModel+CalendarLine&gt;" %&gt; &lt;%@ Import Namespace="SHP.WebUI.HtmlHelpers" %&gt; &lt;%@ Import Namespace="SHP.Models" %&gt; &lt;tr&gt; &lt;% foreach (var item in Model.HtmlCellCollection) { %&gt; &lt;%: Html.CalendarCellClass(item)%&gt; &lt;% } %&gt; &lt;/tr&gt; </code></pre> <p>The other display templates are similar.</p> <p>My CalendarCellClass helper method looks like;</p> <pre><code> public static MvcHtmlString CalendarCellClass(this HtmlHelper helper, CalendarViewModel.CalendarCell _cell) { TagBuilder td_Outer = new TagBuilder("td"); if (_cell.MorningOnlyFlag == true || _cell.AfternoonOnlyFlag == true) { td_Outer.InnerHtml = GetHalfDayTable(_cell); } else td_Outer.MergeAttribute("class", _cell.HtmlCellClass); return MvcHtmlString.Create(td_Outer.ToString()); } </code></pre>
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    1. USarame3333
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      1. VTUpMod
    1. CONo way to know from just looking at that, you'll have to profile it see where it is actually running slowly. Is it the DB queries? the html generation? or just simply the time it takes to transfer the page to the client? Once you know where performance is bad you can start looking in to how to improve it.
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      1. POMVC 2 - I have a control that uses a lot of HTML. How do I improve the performance?
      1. USChris Chilvers
    2. COAny chance you could provide an example of the full HTML generated by this code? (Link to pastebin or whatever)
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      1. POMVC 2 - I have a control that uses a lot of HTML. How do I improve the performance?
      1. USNilzor
    3. COAre you sure the problem is in the amount of html? How large is the generated html? I'd be more inclined to look at the data collection to improve performance.
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      1. POMVC 2 - I have a control that uses a lot of HTML. How do I improve the performance?
      1. USTrax72
 

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