    @if (IsSectionDefined(&quot;Sidebar&quot;))
    {
        @RenderSection(&quot;Sidebar&quot;)
    }
    else
    {
        &lt;div&gt;Some default content&lt;/div&gt;
    }

Why does the following script give the error:
 
`payIntList[i] = payIntList[i] + 1000  
TypeError: &#39;map&#39; object is not subscriptable`  

    payList = []
    numElements = 0

    while True:
            payValue = raw_input(&quot;Enter the pay amount: &quot;)
            numElements = numElements + 1
            payList.append(payValue)
            choice = raw_input(&quot;Do you wish to continue(y/n)?&quot;)
            if choice == &#39;n&#39; or choice == &#39;N&#39;:
                             break

    payIntList = map(int,payList)

    for i in range(numElements):
             payIntList[i] = payIntList[i] + 1000
             print payIntList[i]

Python map object is not subscriptable

I have a list:

    my_list = [&#39;element1\t0238.94&#39;, &#39;element2\t2.3904&#39;, &#39;element3\t0139847&#39;]

How can I delete the `\t` and everything after to get this result:

    [&#39;element1&#39;, &#39;element2&#39;, &#39;element3&#39;]


How to split elements of a list?

    @* Omitted code.. *@
    @RenderBody()
    @RenderSection(&quot;Sidebar&quot;, required: false)

Is there any way to know in the `Omitted code` part if the RenderSection `Sidebar` exists or not?


How can I know if a non-required RenderSection exists?

<pre><code class="hljs language-kotlin">@* Omitted code.. *@
@RenderBody()
@RenderSection("Sidebar", required: false)
</code></pre>
Is there any way to know in the <code>Omitted code</code> part if the RenderSection <code>Sidebar</code> exists or not?

I&#39;ve read about this technique: [Shared assembly info in VS projects - JJameson&#39;s blog](http://www.technologytoolbox.com/blog/jjameson/archive/2009/04/03/shared-assembly-info-in-visual-studio-projects.aspx )

Basically it means to create a SharedAssemblyInfo.cs with versioning information about the assembly, and adding this file as Link to all projects of the solution, so the actual file resides only in 1 location on disk.

My question deals with 2 scenarios:

1. Existing solution that doesn&#39;t use this mechanism: Is there a way to easily add the ShareAssemblyInfo to all projects? (lets say i have a solution with 50 projects).

2. When creating a new project, by default a new AssemblyInfo.cs is created. However i&#39;d like to link automatically to the SharedAssemblyInfo as well.

Is there any solution for this? what is the common practice?

Shared AssemblyInfo for uniform versioning across the solution

In SQL Server we can write data AS `Numeric(15,10)` .. what will the equivalent of this in C#?

I know that `Numeric`&#39;s equivalent is `Decimal` but how to represent `Numeric(15,10)`?

What is the equivalent datatype of SQL Server&#39;s Numeric in C#

Why can&#39;t I preallocate a `hashset&lt;T&gt;`?

There are times when i might be adding a lot of elements to it and i want to eliminate resizing. 


Why can&#39;t I preallocate a hashset&lt;T&gt;

This is my Linq Syntax which I am using to my entity model
  

    IQueryable&lt;string&gt; objEmployee = null;
    
    objEmployee = from res in _db.EMPLOYEEs
                  where (res.EMAIL == givenInfo || res.USER_NAME == givenInfo)
                  select res.EMAIL;

How can I select multiple columns? Like I want to select res.ID aswell. And how can I receive those? IQueryable&lt;string&gt; will not work I think.
And this is called Linq to SQL - right ?

Linq Syntax - Selecting multiple columns

I&#39;m trying to implement a pure WCF scenario where I want to call **Dynamics CRM WCF service** without relying on the SDK helper classes. Basically, I would like to implement federated authentication against **Dynamics CRM 2011** using only native WCF support from the .net framework.

The reason I&#39;m doing this is that I would like to port this scenario later-on to BizTalk.

I&#39;ve successfully generated proxy classes with SvcUtil, but the part of the policies and security assertions are not compatible with the configuration schema. SvcUtil suggests to build the binding from code instead, which is what I&#39;m trying to do.

The resulting code is here:

            private static void CallWcf()
        {
            OrganizationServiceClient client = null;

            try
            {
                // Login Live.com Issuer Binding

                var wsHttpBinding = new WSHttpBinding();
                wsHttpBinding.Security = new WSHttpSecurity();
                wsHttpBinding.Security.Mode = SecurityMode.Transport;

                // Endpoint Binding Elements

                var securityElement = new TransportSecurityBindingElement();
                securityElement.DefaultAlgorithmSuite = SecurityAlgorithmSuite.TripleDes;
                securityElement.IncludeTimestamp = true;
                securityElement.KeyEntropyMode = SecurityKeyEntropyMode.CombinedEntropy;
                securityElement.MessageSecurityVersion = MessageSecurityVersion.WSSecurity11WSTrust13WSSecureConversation13WSSecurityPolicy12BasicSecurityProfile10;
                securityElement.SecurityHeaderLayout = SecurityHeaderLayout.Strict;

                var securityTokenParameters = new IssuedSecurityTokenParameters();
                securityTokenParameters.InclusionMode = SecurityTokenInclusionMode.AlwaysToRecipient;
                securityTokenParameters.ReferenceStyle = SecurityTokenReferenceStyle.Internal;
                securityTokenParameters.RequireDerivedKeys = false;
                securityTokenParameters.TokenType = null;
                securityTokenParameters.KeyType = SecurityKeyType.SymmetricKey;
                securityTokenParameters.KeySize = 192;
                securityTokenParameters.IssuerAddress = new EndpointAddress(&quot;https://login.live.com/extSTS.srf&quot;);
                securityTokenParameters.IssuerMetadataAddress = null;
                securityTokenParameters.DefaultMessageSecurityVersion = null;
                securityTokenParameters.IssuerBinding = wsHttpBinding;

                securityElement.EndpointSupportingTokenParameters.Signed.Add(securityTokenParameters);

                var textMessageEncodingElement = new TextMessageEncodingBindingElement();
                textMessageEncodingElement.MaxReadPoolSize = 64;
                textMessageEncodingElement.MaxWritePoolSize = 16;
                textMessageEncodingElement.MessageVersion = MessageVersion.Default;
                textMessageEncodingElement.WriteEncoding = System.Text.Encoding.UTF8;

                textMessageEncodingElement.ReaderQuotas.MaxStringContentLength = 8192;
                textMessageEncodingElement.ReaderQuotas.MaxArrayLength = 16384;
                textMessageEncodingElement.ReaderQuotas.MaxBytesPerRead = 4096;
                textMessageEncodingElement.ReaderQuotas.MaxNameTableCharCount = 16384;

                var httpsTransportElement = new HttpsTransportBindingElement();
                httpsTransportElement.ManualAddressing = false;
                httpsTransportElement.AuthenticationScheme = System.Net.AuthenticationSchemes.Anonymous;

                CustomBinding binding = new CustomBinding();
                binding.Elements.Add(securityElement);
                binding.Elements.Add(textMessageEncodingElement);
                binding.Elements.Add(httpsTransportElement);

                client = new OrganizationServiceClient(binding, new EndpointAddress(EndpointUri));
                client.ClientCredentials.UserName.UserName = Username;
                client.ClientCredentials.UserName.Password = Password;
                client.Open();

                var columnSet = new schemas.microsoft.com.xrm._2011.Contracts.ColumnSet();
                var identifier = new Guid(&quot;fbf8240e-2c85-e011-ad55-1cc1de0878eb&quot;);

                columnSet.Columns = new string[] { &quot;name&quot; };
                var entity = client.Retrieve(&quot;account&quot;, identifier, columnSet);
            }

            finally
            {
                if (client != null)
                    client.Close();
            }
        }


I&#39;m new to federated authentication and am having a hard time figuring out the potential differences between the many available bindings, so I would be grateful for any help in this regard.



Is it possible to call Dynamics CRM 2011 late-bound WCF Organization service without the SDK - straight customized binding?

I don&#39;t know what&#39;s wrong with my machine, but it&#39;s a while that I&#39;m getting the following strange error from ASP.NET (for all my applications).

    Compilation Error

    Description: An error occurred during the compilation of a resource required to service this request. Please review the following specific error details and modify your source code appropriately. 

    Compiler Error Message: The compiler failed with error code -1073741502.


    Show Detailed Compiler Output:


    C:\Windows\SysWOW64\inetsrv&gt; &quot;C:\Windows\Microsoft.NET\Framework\v4.0.30319\csc.exe&quot; /t:library /utf8output /R:&quot;C:\Windows\Microsoft.NET\Framework\v4.0.30319\Temporary ASP.NET Files\root\75855fbd\1e953b27\assembly\dl3\2689d6b5\f0791420_961fcc01\wnvhtmlconvert.dll&quot; /R:&quot;C:\Windows\Microsoft.Net\assembly\GAC_MSIL\System\v4.0_4.0.0.0__b77a5c561934e089\System.dll&quot; /R:&quot;C:\Windows\Microsoft.Net\assembly\GAC_MSIL\System.Drawing\v4.0_4.0.0.0__b03f5f7f11d50a3a\System.Drawing.dll&quot; /R:&quot;C:\Windows\Microsoft.Net\assembly\GAC_32\System.Web\v4.0_4.0.0.0__b03f5f7f11d50a3a\System.Web.dll&quot; /R:&quot;C:\Windows\Microsoft.Net\assembly\GAC_MSIL\System.Web.Entity\v4.0_4.0.0.0__b77a5c561934e089\System.Web.Entity.dll&quot; /R:&quot;C:\Windows\Microsoft.Net\assembly\GAC_MSIL\System.ServiceModel.Web\v4.0_4.0.0.0__31bf3856ad364e35\System.ServiceModel.Web.dll&quot; /R:&quot;C:\Windows\Microsoft.Net\assembly\GAC_MSIL\System.IdentityModel\v4.0_4.0.0.0__b77a5c561934e089\System.IdentityModel.dll&quot; /R:&quot;C:\Windows\Microsoft.NET\Framework\v4.0.30319\Temporary ASP.NET Files\root\75855fbd\1e953b27\assembly\dl3\d08c81cd\4d77c01f_961fcc01\AjaxControlToolkit.dll&quot; /R:&quot;C:\Windows\Microsoft.Net\assembly\GAC_MSIL\System.ServiceModel.Activation\v4.0_4.0.0.0__31bf3856ad364e35\System.ServiceModel.Activation.dll&quot; /R:&quot;C:\Windows\Microsoft.Net\assembly\GAC_MSIL\System.Web.ApplicationServices\v4.0_4.0.0.0__31bf3856ad364e35\System.Web.ApplicationServices.dll&quot; ......AND SO ON.....

Facts:

1. Killing worker process fixes the problem temporarily
2. I even reinstalled my .NET framework! It didn&#39;t work.
3. Restarting IIS doesn&#39;t help

What can cause this problem?


ASP.NET strange compilation error

I see delegates in two forms:

    A. Func&lt;string, string&gt; convertMethod = lambda 

    B. public delegate string convertMethod(string value);

I&#39;m uncertain of what actually the difference between these two are. Are they both delegates? I believe the first one would use a lambda and the second would have to have a method to actually perform the work. I may be confused too.

What is the difference between Func&lt;string,string&gt; and delegate?

How do I serialize an object into query-string format? I can&#39;t seem to find an answer on google. Thanks.

Here is the object I will serialize as an example.

    public class EditListItemActionModel
    {
    	public int? Id { get; set; }
    	public int State { get; set; }
    	public string Prefix { get; set; }
    	public string Index { get; set; }
    	public int? ParentID { get; set; }
    }



How do I serialize an object into query-string format?

I have a webapp created using C# and asp.net. I placed a parameter value in the querystring with a plus(+) sign. But the plus sign disappear.

How can I include the plus sign(+) in the query string without disappearing?

Please advise.

Thanks.

Edit: added code with UrlEncode

    string str = Server.UrlEncode(Requery.QueryString[&quot;new&quot;]);


Plus sign in query string

I have a question about [User-Defined Table Types][1] in SQL Server 2008.

For the need of one of the ASP.NET application we defined our own table-types on SQL Server 2008 to use them  as parameters in the stored procedures (when executing sql command in ASP.NET application we pass DataTable object as parameter for stored procedure [see here for an example][2])

The problem is that when we run Sql command (execute stored procedure) from ASP.NET we get an error:

&gt; The EXECUTE permission was denied on the object &#39;ourTableType&#39;,
&gt; database &#39;ourDatabase&#39;, schema &#39;ourSchema&#39;.

Why is that so? Why do we need to set permission on user-defined table types? Why is not enough to have permission set just on stored procedure that uses it? And if we have to set it no matter what, why there is no `EXECUTE` permission type to set in properties window whatsoever (I can see only `Control`, `References`, `Take Ownership`, `View Definition`)?

What I also don&#39;t understand is that setting permission to `Control` in properties window solves the problem and the stored procedure runs without problems.

  [1]: http://msdn.microsoft.com/en-us/library/bb522526.aspx
  [2]: http://www.codeproject.com/KB/database/sqlserver2008.aspx

The EXECUTE permission is denied on the user-defined table types?

I have a curious problem with ASP.NET MVC3 client-side validation. I have the following class:

    public class Instrument : BaseObject
    {
        public int Id { get; set; }

        [Required(ErrorMessage = &quot;Name is required.&quot;)]
        [MaxLength(40, ErrorMessage = &quot;Name cannot be longer than 40 characters.&quot;)]
        public string Name { get; set; }
    }

From my view:

    &lt;div class=&quot;editor-field&quot;&gt;
        @Html.EditorFor(model =&gt; model.Name)
        @Html.ValidationMessageFor(model =&gt; model.Name)
    &lt;/div&gt;


And here&#39;s the generated HTML I get for the textbox for this field:

    &lt;input class=&quot;text-box single-line&quot; data-val=&quot;true&quot; data-val-required=&quot;Name is required.&quot; id=&quot;Name&quot; name=&quot;Name&quot; type=&quot;text&quot; value=&quot;&quot;&gt;

No sign of the `MaxLengthAttribute`, but everything else seems to be working.

Any ideas what&#39;s going wrong?


MaxLength Attribute not generating client-side validation attributes

What are the operative differences between these two validation packages when used for ASP.NET MVC validatation? They seem to have similar objects, all the way to their object names. Is one related to another? What are their differences? In what way do these differences denote different use cases?

* [Fluent Validation][1] (3rd party solution)
* [Data annotations][2] (Microsoft &quot;baked-in&quot;)


  [1]: https://github.com/JeremySkinner/FluentValidation
  [2]: http://www.asp.net/mvc/tutorials/validation-with-the-data-annotation-validators-cs

Fluent Validation vs. Data Annotations

I&#39;m using `AutoMapper` in an `ASP.NET MVC` application. I was told that I should move the `AutoMapper.CreateMap` elsewhere as they have a lot of overhead. I&#39;m not too sure how to design my application to put these calls in just 1 place.

I have a web layer, service layer and a data layer. Each a project of its own. I use `Ninject` to DI everything. I&#39;ll utilize `AutoMapper` in both web and service layers. 

So what are your setup for `AutoMapper`&#39;s CreateMap? Where do you put it? How do you call it?

Where to place AutoMapper.CreateMaps?

I am configuring an MVC 3 project to work on a local install of IIS and came across the following 500 error:

&gt; Handler &quot;PageHandlerFactory-Integrated&quot; has a bad module
&gt; &quot;ManagedPipelineHandler&quot; in its module list.

It turns out that this is because ASP.Net was not completely installed with IIS even though I checked that box in the &quot;Add Feature&quot; dialog.  To fix this, I simply ran the following command at the command prompt

    %windir%\Microsoft.NET\Framework64\v4.0.30319\aspnet_regiis.exe -i

If I had been on a 32 bit system, it would have looked like the following:

    %windir%\Microsoft.NET\Framework\v4.0.21006\aspnet_regiis.exe -i

My question is, is there a way to install IIS on a windows 7 box to use .NET 4.0 (MVC 3) without taking this extra step?

How to fix: Handler &quot;PageHandlerFactory-Integrated&quot; has a bad module &quot;ManagedPipelineHandler&quot; in its module list

What is the most natural way to return an empty ActionResult (for child action)?

    public ActionResult TestAction(bool returnValue)
    {
       if (!returnValue)
         return View(EmptyView);
       
       return View(RealView);
    }

One option I can see is to create an empty view and reference it at EmptyView... but may be there is any built-in option?

ASP.NET MVC return empty view

Here is my model:

    public class NewsCategoriesModel {
        public int NewsCategoriesID { get; set; }        
        public string NewsCategoriesName { get; set; }
    }

My controller:

    public ActionResult NewsEdit(int ID, dms_New dsn) {
        dsn = (from a in dc.dms_News where a.NewsID == ID select a).FirstOrDefault();
        var categories = (from b in dc.dms_NewsCategories select b).ToList();
        var selectedValue = dsn.NewsCategoriesID;
        SelectList ListCategories = new SelectList(categories, &quot;NewsCategoriesID&quot;, &quot;NewsCategoriesName&quot;,selectedValue);
        
        // ViewBag.NewsCategoriesID = new SelectList(categories as IEnumerable&lt;dms_NewsCategory&gt;, &quot;NewsCategoriesID&quot;, &quot;NewsCategoriesName&quot;, dsn.NewsCategoriesID);
        ViewBag.NewsCategoriesID = ListCategories;
        return View(dsn);
    }

And then my view:

    @Html.DropDownList(&quot;NewsCategoriesID&quot;, (SelectList)ViewBag.NewsCategoriesID)

When i run, the `DropDownList` does not select the value I set.. It is always selecting the first option.

dropdownlist set selected value in MVC3 Razor

My model has a boolean that has to be nullable

    public bool? Foo
    {
       get;
       set;
    }

so in my Razor cshtml I have

    @Html.CheckBoxFor(m =&gt; m.Foo)

except that doesn&#39;t work. Neither does casting it with (bool). If I do
 
    @Html.CheckBoxFor(m =&gt; m.Foo.Value)

that doesn&#39;t create an error, but it doesn&#39;t bind to my model when posted and foo is set to null. Whats the best way to display Foo on the page and make it bind to my model on a post?

Checkbox for nullable boolean

I have a `View - _Edit` which lives in `News M/V/C`.

I reuse the `V/M` via the `CategoryController` as:

    return PartialView(&quot;/Views/News/_Edit.cshtml&quot;, model);

How from within the `View - _Edit` can I alert the controller name?

When I:

    alert(&#39;@ViewContext. RouteData.Values[&quot;controller&quot;].ToString()&#39;);
The Value is: `News`
However, the URL is: `/Category/foobar`
  
Is there a way to get the value `&#39;Category&#39;` to alert? thanks

Get current controller in view

Using ASP.NET MVC I am creating a custom Authorize attribute to take care of some custom authorization logic.  I have looked at a lot of examples and it is pretty straight forward but my question is which method is best to override, AuthorizeCore or OnAuthorization?  I have seen many examples overriding one or the other.  Is there a difference?  

Extend AuthorizeAttribute Override AuthorizeCore or OnAuthorization

I have the following:

    @if (Model.PageMeta.Sidebar == PageMetaSidebar.Small) { Html.RenderPartial(&quot;_SmallSidebar&quot;); }


and in my include file:

    &lt;style &quot;text/css&quot;&gt;
        #sbr { width: 193px; }
        #lft { left: 205px; top: 85px; right:  5px; bottom: 30px; }
        #top { left: 215px; top: 85px; right: 15px; }
        #btm { left: 215px; right: 15px; bottom: 30px; }
        #mdl { left: 215px; top: 85px; right: 15px; bottom: 30px; }
        @media print {
            div#lft {left:10px; right: 10px; top: 0px;}
            div#top {left:20px; right: 20px; top: 0px;}
            div#btm {left:20px; right: 20px; }
            div#mdl {left:20px; right: 20px; top: 0px;}
        }
    }
    &lt;/style&gt;

However this gives me a compile type error:

    _SmallSidebar.cshtml(7): error CS0103: The name &#39;media&#39; does not exist in the current context

Does anyone out there know how I could fix this so it accepts that @media is not something that needs to be evaluated?

How can I specify CSS @media within a razor file?

Or, should I rather ask, when will VS code formatting work properly for Razor markup? The formatting works for most structures, but it seems to choke on &#39;if&#39; blocks. The code below is as it is formatted by VS. It is very easy to fix this case, with one more indent, but I nicely accepted the formatting in everyday use, and like to use it often for the bulk of my code, so I&#39;d rather avoid manual formatting if possible. Right now I just leave it as VS formats it. 

    @{ 
        if (User.Identity.IsAuthenticated)
        {
        &lt;text&gt;Hello &lt;/text&gt;
        @Html.Display(&quot;@ViewBag.UserName&quot;) &lt;text&gt; - &lt;/text&gt;
        @Html.ActionLink(&quot;Sign Out&quot;, &quot;LogOff&quot;, &quot;Account&quot;, null, new { style = &quot;font-weight: bold;&quot; })
        }
     }

I think it&#39;s important for readability that, e.g. in the above, the body of the if block is indented, besides just looking nicer. 

Why doesn&#39;t Visual Studio code formatting work properly for Razor markup?

This works, because it returns the result of partial view rendering in a string:

    @Html.Partial(&quot;Path/to/my/partial/view&quot;)

But I prefer to use `RenderPartial` and it seems I need to write:

    @{Html.RenderPartial(&quot;Path/to/my/partial/view&quot;);}

instead of:

    @Html.RenderPartial(&quot;Path/to/my/partial/view&quot;);

To get it to work. Error message:

     Compiler Error Message: CS1502: The best overloaded method match for &#39;System.Web.WebPages.WebPageExecutingBase.Write(System.Web.WebPages.HelperResult)&#39; has some invalid arguments

If there any better way instead of opening code block `@{...}` just for one method call?

Content Type	Original Author	Original Content on Stackoverflow
Question	Thomas Bonini	View Question on Stackoverflow
Solution 1 - C#	Darin Dimitrov	View Answer on Stackoverflow

How can I know if a non-required RenderSection exists?

C# Problem Overview

C# Solutions

Solution 1 - C#

How to split elements of a list?

Python map object is not subscriptable

Attributions