MVC :: 350ms Per "EditorFor" With Debugger Attached?
Jun 2, 2010
Have you experienced this?
[code]....
Symptoms
- For each identical text box I add in this way, I add about 350ms to the page load time while in debug mode. My page takes about 5-7 seconds to load or refresh in its current design, but times are somewhat variable.
- If I disable debugging, with or without controls on the page, response is fast, about 50ms.
- If I remove the controls from the page, the time drops to a fixed 200ms duration.
- CPU is 51% (dual-core) throughout the delay, and my laptop processor scales to 97% maximum frequency.
Contraindications:
- All of this is the initial GET, no posts or other activity involved.
- I've run SQL Profiler and found response times to be acceptable, the query is not repeated, and no unusual data activity is present.
- I've installed wireshark and do not see unusual network resolution or other activity.
My environment
- I've recently upgraded from VS2010 RC2 to RTM.
- I'm running Windows 7, and my computer is fairly new with minimal applications.
- My model is a persistence-aware EF repository, referenced in another project, using Windows Integrated
Security to connect to a SQL 2008 R2 database.
Here is an example:
[Code]....
Generates:[Code]....
Note that neither repeated access to the same expression or access to related entity properties caused degradation in my test.
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Feb 8, 2011
I'm using Vs2010 professional. I was working with a large WebSite (folder) project at work using IIS7 and tried to attach the debugger to the w3wp.exe for debugging an aspx page in IE8 after setting breakpoints in the javascript for the page and in the Page_Load in the code behind. I got a "first chance exception of type 'System.InvalidOperationException' occurred in System.dll" in my debug output, so I gave up for the moment. I created a default website project in the root of IIs7, and set it up as an application in IIs7 with the default app pool.
I tried entering a little javascript in the head, and set a breakpoint, and set a breakpoint again in the Page_Load. I attached the debugger again to w3wp.exe. I see the assemblies load in the debug output and nothing happens:
Ignoring attach security warning for process C:WindowsSystem32inetsrvw3wp.exe, owned by IIS APPPOOLDefaultAppPool [administrator]
'w3wp.exe' (Managed (v4.0.30319)): Loaded 'C:WindowsMicrosoft.NetassemblyGAC_64mscorlibv4.0_4.0.0.0__b77a5c561934e089mscorlib.dll'
'w3wp.exe' (Managed (v4.0.30319)): Loaded 'C:WindowsMicrosoft.NetassemblyGAC_64System.Webv4.0_4.0.0.0__b03f5f7f11d50a3aSystem.Web.dll'
'w3wp.exe' (Managed (v4.0.30319)): Loaded 'C:WindowsMicrosoft.NetassemblyGAC_MSILSystemv4.0_4.0.0.0__b77a5c561934e089System.dll'
'w3wp.exe' (Managed (v4.0.30319)): Loaded 'C:WindowsMicrosoft.NetassemblyGAC_MSILSystem.Corev4.0_4.0.0.0__b77a5c561934e089System.Core.dll'
'w3wp.exe' (Managed (v4.0.30319)): Loaded 'C:WindowsMicrosoft.NetassemblyGAC_MSILSystem.Configurationv4.0_4.0.0.0__b03f5f7f11d50a3aSystem.Configuration.dll'
'w3wp.exe' (Managed (v4.0.30319)): Loaded 'C:WindowsMicrosoft.NetassemblyGAC_MSILSystem.Xmlv4.0_4.0.0.0__b77a5c561934e089System.Xml.dll'
'w3wp.exe' (Managed (v4.0.30319)): Loaded 'C:WindowsMicrosoft.NetassemblyGAC_MSILMicrosoft.Build.Utilities.v4.0v4.0_4.0.0.0__b03f5f7f11d50a3aMicrosoft.Build.Utilities.v4.0.dll'
'w3wp.exe' (Managed (v4.0.30319)): Loaded 'C:WindowsMicrosoft.NetassemblyGAC_MSILSystem.Runtime.Cachingv4.0_4.0.0.0__b03f5f7f11d50a3aSystem.Runtime.Caching.dll'
'w3wp.exe' (Managed (v4.0.30319)): Loaded 'C:WindowsMicrosoft.NetassemblyGAC_MSILSystem.Web.RegularExpressionsv4.0_4.0.0.0__b03f5f7f11d50a3aSystem.Web.RegularExpressions.dll'
'w3wp.exe' (Managed (v4.0.30319)): Loaded 'C:WindowsMicrosoft.NetassemblyGAC_64System.Datav4.0_4.0.0.0__b77a5c561934e089System.Data.dll'
'w3wp.exe' (Managed (v4.0.30319)): Loaded 'C:WindowsMicrosoft.NetassemblyGAC_MSILSystem.Drawingv4.0_4.0.0.0__b03f5f7f11d50a3aSystem.Drawing.dll'
'w3wp.exe' (Managed (v4.0.30319)): Loaded 'C:WindowsMicrosoft.NetassemblyGAC_MSILMicrosoft.JScriptv4.0_10.0.0.0__b03f5f7f11d50a3aMicrosoft.JScript.dll'
'w3wp.exe' (Managed (v4.0.30319)): Loaded 'C:WindowsMicrosoft.NetassemblyGAC_MSILCppCodeProviderv4.0_10.0.0.0__b03f5f7f11d50a3aCppCodeProvider.dll'
'w3wp.exe' (Managed (v4.0.30319)): Loaded 'C:WindowsMicrosoft.NETFramework64v4.0.30319Temporary ASP.NET Fileswebsite297987469de3b823App_global.asax.g3ldh1jy.dll'
'w3wp.exe' (Managed (v4.0.30319)): Loaded 'C:WindowsMicrosoft.NetassemblyGAC_MSILSystem.ServiceModel.Activationv4.0_4.0.0.0__31bf3856ad364e35System.ServiceModel.Activation.dll'
'w3wp.exe' (Managed (v4.0.30319)): Loaded 'C:WindowsMicrosoft.NetassemblyGAC_MSILSystem.Web.Extensionsv4.0_4.0.0.0__31bf3856ad364e35System.Web.Extensions.dll'
'w3wp.exe' (Managed (v4.0.30319)): Loaded 'C:WindowsMicrosoft.NetassemblyGAC_MSILSystem.Runtime.DurableInstancingv4.0_4.0.0.0__31bf3856ad364e35System.Runtime.DurableInstancing.dll'
'w3wp.exe' (Managed (v4.0.30319)): Loaded 'C:WindowsMicrosoft.NetassemblyGAC_MSILSystem.Web.Mobilev4.0_4.0.0.0__b03f5f7f11d50a3aSystem.Web.Mobile.dll'
'w3wp.exe' (Managed (v4.0.30319)): Loaded 'C:WindowsMicrosoft.NetassemblyGAC_MSILSystem.ServiceModelv4.0_4.0.0.0__b77a5c561934e089System.ServiceModel.dll'
'w3wp.exe' (Managed (v4.0.30319)): Loaded 'C:WindowsMicrosoft.NetassemblyGAC_MSILSMDiagnosticsv4.0_4.0.0.0__b77a5c561934e089SMDiagnostics.dll'
'w3wp.exe' (Managed (v4.0.30319)): Loaded 'C:WindowsMicrosoft.NetassemblyGAC_MSILSystem.Xaml.Hostingv4.0_4.0.0.0__31bf3856ad364e35System.Xaml.Hosting.dll'
'w3wp.exe' (Managed (v4.0.30319)): Loaded 'C:WindowsMicrosoft.NETFramework64v4.0.30319Temporary ASP.NET Fileswebsite297987469de3b823App_Web_t1ltfooj.dll'
'w3wp.exe' (Managed (v4.0.30319)): Loaded 'C:WindowsMicrosoft.NETFramework64v4.0.30319Temporary ASP.NET Fileswebsite297987469de3b823App_Web_myfv4sgi.dll'
The thread '<No Name>' (0x22cc) has exited with code 0 (0x0).
I am using 64 bit Windows 7 Professional.
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Feb 24, 2010
Im having a strange problem which i never experienced before, the problem is my visual web developer 2005 express edition is not getting attached to the debugger, i mean when im running my web application it is not debugging the program if im putting any breakpoint, more over i uninstall and again installed visual web developer it worked fine for first time but again it is not working. i only difference is i have Internet explorer 8.I dont exactly know the problem. does any one faced similar problem
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Jan 18, 2010
I am learning MVC using the v2 release with Entity Framework v4. Let's say I have 3 objects Game, Points and Players. They are related in the following manner:Game has points and the Points can have a player associated with them ( 1 Game to many Points and a Point object can have one Player).
I am attempting to use the EditTemplates feature in MVC2 to render my views. In my Game Edit view I want to have the basic Game object information editable, and also the related Points objects. Currently I am utilizing "`<%= Html.EditorForModel() %>`"(Which seems pretty slow) to render the Edit View and then I have a specific Game and Point EditTemplates.
The data renders correctly and is editable for both the Game and Point information. When I go to perform the update and submit the form I receive the "Game" object in my Update ActionResult. The basic properties are populated for the Game object but any deep properties such as Points are not; they appear as null. If I look at the Request.Form variables in debug I can see the Points fields are being passed to the server but do not place themselves back into the Game object.
In my Game EditTemplate I am using the following to render the Points objects:
<%= Html.EditorFor(c => c.Points) %>
My Points EditTemplate looks like: [code]...
why this is rendering as "Points.Points[index] instead of Points[index]? I tried messing with the parameters in the EditFor:
<%= Html.EditorFor(c => c.Points,null,"Points") %>
but then the inputs render as Points.Points[index]
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Mar 30, 2010
So I have two nested view models, CreditCard -> BillAddress. I have a view, "EditBilling", that has EditorFor(CreditCard). The CreditCard EditorTemplate has EditorFor(BillAddress), and the BillAddress EditorTemplate has EditorFor(BillState).
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$('#<%= ViewData.ModelMetadata.PropertyName %>_BillState')
The problem here is that the ModelMetadata.PropertyName property is only aware of the current property, not the parent(s). So I end up with the following:
$('#BillAddress_BillState')
How does one go about getting the client ID of nested strongly typed helpers?
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Sep 18, 2010
Have seen in the MusicStore PDF witch can be sownloaded from [URL], That is it possible to render additional vew data. so: I have my ViewDataModel
[Code]....
I have the Model:
[Code]....
In my controller, I add the data into the model:
[Code]....
And I try to render it with Html.EditorFor.
[Code]....
My problem is here, that it only render Keyword
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Mar 18, 2011
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Aug 15, 2010
I've been trying to something with the templating system in MVC2, but what I thought should be simple has not been successful. So now I question if it's possible or if I'm missing anything obvious. The scenario:
I have a base template as a strongly typed view that is set up in the ViewsSharedEditorTemplates folder...call it CommonItem.ascx. It wants a model item of type MyItemType.
I have a template that is a wrapper around the previous template, is also strongly typed of type MyItemType, residing in the same folder. Call this one CommonItemWrapper.ascx.The contents of CommonItemWrapper.ascx includes divs before/after a declaration Html.EditorForModel("CommonItem").
My expectation would be that the inner template (CommonItem) would be displayed within the outer template. Unfortunately the inner template never gets evaluated.
Am I missing something? Am I mistaken in thinking that templates can be nested in this manner? If so, is there another means to accomplish this?
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Feb 17, 2011
I am looking on Music store example:
In Model we have:
[Required(ErrorMessage = "An Album Title is required")]
public string Title { get; set; }
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<div class="editor-field">
@Html.EditorFor(model => model.Title)
@Html.ValidationMessageFor(model => model.Title)
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My questions: Where I can find definition of EditorFor and ValidationMessageFor helpers?
What is the meaning of "=>" in the above command?
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May 1, 2010
I am generating the controls for an MVC Create Form using html.editorfor().How can i add style properties to whatever is created? For instance i have a control which is generated by html.editorfor() as a single line textbox but i want it to be a multiline textbox.
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I would like to exclude one of model's property from the Html.EditorFor. I tried [HiddenInput(DisplayValue=false)] but it renders the property as an hidden input. This could potentially be a security problem. How can we completely exclude a field from Html.EditorFor?
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I'm trying to do this: Editing a variable length list, ASP.NET MVC 2-style
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Nov 25, 2010
I'm trying to add a `Class` to the `EditorFor` Helper inside an `EditorTemplate`.
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[Code]....
And here is the output <input class="text-box single-line" id="BirthDate" name="BirthDate" type="text" value="08/08/1980" />
You can see here that the `datepicker` class has not been added, yet the "value" has been properly formatted.
Basically I can see that the `EditorTemplate` is working, but the `Class` is not being appended to the rest of the classes on the `<input>` element. Do any of you know how to fix this?
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Feb 16, 2011
I am using EditorFor to display values.
The code for the values to be generated are as follows:
<tr>
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My aim here is upon the Checkbox is being checked, I need to post the ID value as follows:
[Code]....
However, var ID = $(this).parent().parent().find('#ID').val(); is undefined. How can I he read the ID value from the following generated HTML:
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[Code]....
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[Code]....
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I have the following classes in my Model:
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{
[ScaffoldColumn(false)]
[code]...
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I've got a model with say:
->Persons (has its own editor template)
->Pets(has its own editor template)
In the create view I show each one depending if they are not null. But when I try to validate HouseType and say I have Persons not null and pets is null. I get errors of validation for pets.
How do I get around this?
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[DisplayName(CTRes.UserName)]
string Username;
CTRes is my resource, automatically generated class. Above definition is not allowed. Are there any other solutions?
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Feb 14, 2010
I'm trying to follow Stephen Walther's MVC tip: Build a Controller to Debug Your Custom Routes (http://stephenwalther.com/blog/archive/2008/08/03/asp-net-mvc-tip-29-build-a-controller-to-debug-your-custom-routes.aspx) but I'm getting this error "Object reference not set to an instance of an object." when getting the values of the RouteTable.
Function Index() As ActionResult
Dim context As HttpContextBase = Me.ControllerContext.HttpContext
Dim sb As New StringBuilder
For Each namedRoute As Route In RouteTable.Routes
'Dim dataTokens = formatValues(namedRoute.Defaults) 'this looks good
Dim rd = namedRoute.GetRouteData(context)
'sb.Append(dataTokens & "<br>") 'this looks good
sb.Append(formatValues(rd.Values)) 'this one is not, error here [:(]
Next
End Function
Private Function formatValues(ByVal values As RouteValueDictionary) As String
If values Is Nothing Then
Return "N/A"
End If
Dim col = New List(Of [String])()
For Each key As String In values.Keys
Dim value As Object = If(values(key), Nothing)
col.Add((key & "=") + value.ToString())
Next
Return String.Join(", ", col.ToArray())
End Function
You have to reference the debugger file (RouteDebugger.dll) provided by Stephen.
I'm trying to get the Route Name's for each controller.
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