Try setting MVCBuildViews to true in your project file (i.e. edit your csproj file)

     &lt;MvcBuildViews&gt;true&lt;/MvcBuildViews&gt;

Building views takes a while and the extra 10+ seconds to do a debug build can get annoying fast, so I usually only set the MvcBuildViews to true on release type build configurations.
That way, if you have a build server it will catch the error for you, or you can manually run a release build every now and then to check your views.

I don&#39;t think order matters for PropertyGroup elements, but for a more complete example i included elements above and below the MvcBuildViews element.

    &lt;PropertyGroup&gt;
        &lt;Configuration Condition=&quot; &#39;$(Configuration)&#39; == &#39;&#39; &quot;&gt;Debug&lt;/Configuration&gt;
        &lt;Platform Condition=&quot; &#39;$(Platform)&#39; == &#39;&#39; &quot;&gt;AnyCPU&lt;/Platform&gt;
        ...
        &lt;TargetFrameworkVersion&gt;v4.6.1&lt;/TargetFrameworkVersion&gt;
        &lt;MvcBuildViews&gt;false&lt;/MvcBuildViews&gt;
        &lt;UseIISExpress&gt;false&lt;/UseIISExpress&gt;
        ...
    &lt;/PropertyGroup&gt;

    &lt;PropertyGroup Condition=&quot; &#39;$(Configuration)|$(Platform)&#39; == &#39;Release|AnyCPU&#39; &quot;&gt;
        ...
        &lt;ErrorReport&gt;prompt&lt;/ErrorReport&gt;
        &lt;MvcBuildViews&gt;true&lt;/MvcBuildViews&gt;
        &lt;WarningLevel&gt;4&lt;/WarningLevel&gt;
        ...
    &lt;/PropertyGroup&gt;

The MvcBuildViews element in the top PropertyGroup was added by VS on project creation, the build configuration specific one (bottom PropertyGroup) i added manually

Try add in mode edit of project the following assembly: *System.core*, according to the code:

    ...
    &lt;Reference Include=&quot;System.Core, Version=4.0.0.0&quot; /&gt;
    &lt;Reference Include=&quot;System.Net.Http&quot; /&gt;
    &lt;Reference Include=&quot;System.Net.Http.WebRequest&quot; /&gt;
    ...

Sometimes this assembler not loader correctly, In My case, it worked!

I want to validate an IPv4 address using Java. It should be written using the [dot-decimal notation][1], so it should have 3 dots (&quot;`.`&quot;), no characters, numbers in between the dots, and numbers should be in a valid range. How should it be done?


  [1]: http://en.wikipedia.org/wiki/Dotted_decimal

Validate IPv4 address in Java

Suppose there&#39;s an executable and a Python script to launch it, and they&#39;re located in &#39;sibling&#39; subdirectories, e.g.

    /tmp/subdir1/myexecutable
    /tmp/subdir2/myscript.py

If in `/tmp` and running `python subdir2/myscript.py` with a relative path to executable

    # myscript.py
    from subprocess import Popen
    proc = Popen([&quot;../subdir1/myexecutable&quot;])

It makes `OSError: [Errno 2] No such file or directory`.

How does the Python search for the executable? Does it use the current working directory and/or location of the script? Does it use PATH and/or PYTHONPATH? Can you change where and how `subprocess.Popen` searches for the executable? Are commands, absolute and relative paths for executables treated differently? Are there differences between Linux and Windows? What does `shell=True` or `shell=False` influence?


python subprocess Popen environment PATH?

Is there a way for Visual Studio (I&#39;m using 2010) to find errors within razor views during builds, in the same way as other code in a C# project would?

It&#39;s just a pain that you can check any errors in your code and think that everything&#39;s fine, but it appears that you can&#39;t be sure about views unless you go through each one.

BTW I obviously don&#39;t code in my views - I&#39;m just talking about HTML or URL extension methods for example.

Check for razor errors during build

Is there a way for Visual Studio (I'm using 2010) to find errors within razor views during builds, in the same way as other code in a C# project would?
It's just a pain that you can check any errors in your code and think that everything's fine, but it appears that you can't be sure about views unless you go through each one.
BTW I obviously don't code in my views - I'm just talking about HTML or URL extension methods for example.

What is the difference between `Directory.EnumerateFiles` vs `GetFiles`?

Obviously one returns an array and the other return Enumerable.

Anything else?

What is the difference between Directory.EnumerateFiles vs Directory.GetFiles?

I have an `IEnumerable&lt;TravelDetails&gt;` and I am trying to add the vales in the `for`-loop to a `List&lt;TravelDetails&gt;`. I keep getting the errors. 

&gt;Error	15	Argument 1: cannot convert from &#39;System.Collections.Generic.List&lt;TrafficCore.DataObjects.TripDetails&gt;&#39; to &#39;TrafficCore.DataObjects.TripDetails&#39;	C:\TrafficNew\TI 511-Web\Traffic 2.0\511Traffic\511Traffic\Models\DrivingTime.cs	

My code is

    List&lt;TripDetails&gt; tripDetailsCollection = new List&lt;TripDetails&gt;();
    foreach (DrivingTimeRoute dtr in dtRoutes)
    {
        foreach (Trip trip in dtr.Trips)
        {
            foreach (TripPathLink tpl in trip.TripPathLinks)
            {
                tplCollection.Add(tpl);
            }
            IEnumerable&lt;TripDetails&gt; tripDetails = //long Linq-to-Sql here
            List&lt;TripDetails&gt; td = tripDetails.ToList();
            tripDetailsCollection.Add(td); // &lt;&lt;&lt; Error here
        }
    }

Can some one help me with this.  
Thanks,
Pawan


Adding List&lt;t&gt;.add() another list

I would like to know a simple algorithm to check if the given instance of `datetime` lies between another two instances in `C#`.

**Note:**

I skimmed though this https://stackoverflow.com/questions/2634127/how-do-i-check-if-a-given-datetime-object-is-between-two-datetimes and it was for python and many more for php. Most of the other questions were regarding difference between the two.

**Details:**

I am more specific about the time, date does not matter to me. For example i got `DataBase` entry for a staff who works between `10:00` Am - `9:00` Pm and I would like to know which staff is engaged in class at the given time like `2:00 Pm`. Now this would return me the staff&#39;s details who are engaged at this time.

**Edit**

After accepting the answer(been more than year back), i realized i had incorrectly described the problem. But all i think that was to be done back then was to do date and time comparison. So answers by both Jason and VikciaR work. 

Check if datetime instance falls in between other two datetime objects

i was reading about WCF security implementations and found out that there are 2 types of security:
    `Transport Mode and Message Mode (or both)`

If i used HTTPS for Transport Mode, is it more secured if i used Message security also? i am asking this because what i understand is as follows:

https uses SSL protocol which encrypts messages... so why should i add Message Security and encrypt the SSL encrypted message? or am i misunderstanding stuff?

WCF Transport vs Message

I cannot see a app.config file generated for a class library by the VS2008 wizard. In my research I found that in an application only one app.config exists. 

Is it a bad thing to add an app.config manually to a class library or are there any other methods which will serve the purpose of an app.config in class library?

I need to store log4net config information inside the app.config file.


app.config for a class library

What&#39;s the difference between different `Build Configuration settings` e.g. **Any CPU, Mixed Platform, WIN32 etc** in Visual Studio.


Build Configuration: Mixed Platform VS Any CPU

I did a ctrl K + ctrl C (adds `//` to a line) on a lot of lines of code that I need uncommented. What is the quick key method to uncomment code in Visual studio?

How to uncomment multiple lines of code in Visual Studio

Some days ago I installed the [ASP.NET MVC 3 Tools Update](http://haacked.com/archive/2011/04/12/introducing-asp-net-mvc-3-tools-update.aspx) for Visual Studio 2010.  

Just now I went to create a new ASP.NET MVC 3 application and I see that there&#39;s a new option on the `New ASP.NET MVC 3 Project` dialog:

&gt; use HTML5 semantic markup

What does selecting this checkbox change in the newly created app compared to not selecting it, other than the literally obvious?  
When would you *definitely not* want to use it, only to keep compatibility with old browsers?

New &quot;use HTML5 semantic markup&quot; option on File &gt; New MVC 3 project

I am VERY new to ASP.NET MVC (3) and am having a hard time resolving a build error in Visual Studio:

The type or namespace name &#39;DbContext&#39; could not be found (are you missing a using directive or an assembly reference?)

    using System;
    using System.Collections.Generic;
    using System.Linq;
    using System.Web;
    using System.ComponentModel.DataAnnotations;
    using System.Data.Entity;
    
    namespace MyProjectName.Models
    {   
        public class MachineModel
        {
            // name
            [Required]
            [Display(Name = &quot;Nom de la machine&quot;)]
            public string Name { get; set; }
    
            // IP
            [Required]
            [RegularExpression(@&quot;(?:(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.){3}(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)&quot;,
               ErrorMessage = &quot;Donnez une adresse IPv4 valide.&quot;)]
            [Display(Name = &quot;Adresse IP de la machine&quot;)]
            public string IP { get; set; }
        }
    
        public class MachineDbContext : DbContext
        {
            public DbSet&lt;MachineModel&gt; Machines{ get; set; }
        }
    }

The two errors I am getting are:

 - The type or namespace name
   &#39;DbContext&#39; could not be found (are
   you missing a using directive or an
   assembly reference?) 
 - The type or namespace name &#39;DbSet&#39;
   could not be found (are you
   missing a using directive or an
   assembly reference?)

What am I missing?



The type or namespace name &#39;DbContext&#39; could not be found

I know Visual Studio can auto format to make my methods and loops indented properly, but I cannot find the setting.

How do you auto format code in Visual Studio?

I have a view with a model of type `List&lt;string&gt;` and I want to place a drop down list on the page that contains all strings from the list as items in the drop down. I am new to MVC, how would I accomplish this?

I tried this:

    @model List&lt;string&gt;
    @Html.DropDownListFor(x =&gt; x)

but that threw an error.


ASP.NET MVC DropDownListFor with model of type List&lt;string&gt;

Is it possible to use a generic model in ASP.NET MVC 3 (w/ Razor)? The following fails with a syntax error:

    @model DtoViewModel&lt;T&gt; where T : IDto


Using a generic model in ASP.NET MVC Razor

What is the difference between Html.Textbox and Html.TextboxFor?

Html.Textbox VS Html.TextboxFor

this is weird.  I see references out there for @Html.Button() but when I type that Intellisense doesn&#39;t find such a helper... there&#39;s dropdownlist, hidden, editors, et cetera, but no button!

what&#39;s up with that?

There&#39;s no @Html.Button !

Is it possible when using `Html.TextBoxFor` to override the name attribute?

I have tried with no success. I need to use TextBoxFor to get client side validation to work, however for reasons I won&#39;t go into I need the name of the textbox to be different from the generated one.

I have tried the following:  

    @Html.TextBoxFor(x =&gt; x.Data, new { name = Model.Key + &quot;_Data&quot;, id = Model.Key + &quot;_Data&quot; })

Which works for ID but not name. Is this possible?

**Update**: Looking into the code for TextBoxFor. It doesn&#39;t look like there is an easy way. Hopefully someone can prove me wrong.

Content Type	Original Author	Original Content on Stackoverflow
Question	isNaN1247	View Question on Stackoverflow
Solution 1 - C#	JP.	View Answer on Stackoverflow
Solution 2 - C#	Tikall	View Answer on Stackoverflow
Solution 3 - C#	Fábio Rodrigues Fonseca	View Answer on Stackoverflow

Check for razor errors during build

C# Problem Overview

C# Solutions

Solution 1 - C#

Solution 2 - C#

Solution 3 - C#

python subprocess Popen environment PATH?

Validate IPv4 address in Java

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