See [*What&#39;s New in the .NET Framework 4.5*](http://msdn.microsoft.com/en-us/library/ms171868%28v=vs.110%29.aspx) and [*What&#39;s New for Visual C# in Visual Studio 2012*](http://msdn.microsoft.com/en-us/library/hh156499%28v=vs.110%29.aspx).

The biggest new feature of C# 5.0 is better support for asynchronous operations, using the new `await` keyword.

Iam trying to refresh the materialized view by using:

    DBMS_MVIEW.REFRESH(&#39;v_materialized_foo_tbl&#39;)

But it&#39;s throwing invalid sql statement. 

Then I have created a stored procedure like this:

    CREATE OR REPLACE 
    PROCEDURE MAT_VIEW_FOO_TBL 
    IS
    BEGIN
       DBMS_MVIEW.REFRESH(&#39;v_materialized_foo_tbl&#39;)
    END MAT_VIEW_FOO_TBL IS;

This procedure has been created successfully but when i am calling this procedure with 

    MAT_VIEW_FOO_TBL;

it&#39;s throwing an error again.

Kindly suggest a solution for this issue.

Thanks,
Srinivas



How to refresh materialized view in oracle

**UPDATE:** I highly recommend not investing any time in XDomainRequest, because it is a terribly poor implementation with many limitations. It basically only really works for GET requests to non-ssl servers, so you might as well use jsonp or whatever.

---

I am using CORS to call a cross domain API, however Internet Explorer is giving issues. CORS should be possible in IE8 and IE9 through the `XDomainRequest` object, however I can&#39;t get things to work..

JQuery [refuses][1] to provide native support for XDomainRequest, however several jQuery plugins are suggested to add this support. This [topic][2] suggest two such plugins: [jQuery.XDomainRequest.js][3] and [xdr.js][4], which has been reported to work. Afaik, the plugins should automatically override behavior of `jQuery.ajax`. I found another plugin [here][5].

I put a little demo pages with the respective plugins [jQuery.XDomainRequest][6] and [xdr][7] and [jquery.ie.cors][8] that perform ajax requests to a CORS enabled server. The pages are working in Chrome and Firefox, however IE8/9 instantly throw a permission denied error (even before making the request). This [MSDN post][9] suggest adding another handler `xhr.onprogress = function() {};` but I tried this and it isn&#39;t working either.

Any clues what I am doing wrong? I have also tested with IE8 now using MS virtual server, but it has exactly the same problem.

Edit: OK so I figured out that part of the problem was that I was using POST over HTTPS. Apparently XDomainRequest does not allow CORS over HTTPS. I can switch to HTTP but I really need POST. 

Edit2: See [this issue on github](https://github.com/MoonScript/jQuery-ajaxTransport-XDomainRequest/issues/1) for the end of this story. It turns out that when using HTTP POST, the xDomainRequest can only encode the request body (arguments) as `text/plain`. This pretty much makes it worthless, because everyone uses `application/x-www-form-urlencoded` or `multipart/form-data`. 


  [1]: http://bugs.jquery.com/ticket/8283
  [2]: https://stackoverflow.com/questions/10232017/ie9-jquery-ajax-with-cors-returns-access-is-denied
  [3]: https://github.com/MoonScript/jQuery-ajaxTransport-XDomainRequest/blob/master/jQuery.XDomainRequest.js
  [4]: https://github.com/tlianza/ajaxHooks/blob/master/src/ajax/xdr.js
  [5]: https://github.com/Ovea/cors/blob/master/src/main/resources/com/ovea/cors/jquery.ie.cors.js
  [6]: http://www.stat.ucla.edu/~jeroen/cors/test1.html
  [7]: http://www.stat.ucla.edu/~jeroen/cors/test2.html
  [8]: http://www.stat.ucla.edu/~jeroen/cors/test3.html
  [9]: http://social.msdn.microsoft.com/Forums/en-US/iewebdevelopment/thread/30ef3add-767c-4436-b8a9-f1ca19b4812e

CORS with jQuery and XDomainRequest in IE8/9

I have Visual Studio 2012 RC installed on Windows 8 Release Preview and my question is are there any useful new features not related to Metro, or is Metro what seperates .Net 4 and .Net 4.5?

What can I do in C# 5 with .Net 4.5 that I couldn&#39;t do in C# 4 with .Net 4?

<p>I have Visual Studio 2012 RC installed on Windows 8 Release Preview and my question is are there any useful new features not related to Metro, or is Metro what seperates .Net 4 and .Net 4.5?</p>


I&#39;m a bit new at this so bear with me. I&#39;m currently learning C# and Java and one of their similarities is that the main function needs to be encapsulated within a class. For example

    public class HelloWorld {
    	public static void main(String[] args) {
    		// Some Code
    	}
    }

Now I understand that main is often the &quot;entry point&quot; when you run the program. So basically, your program will start executing wherever the main function is. But I believe in both languages you can have multiple main functions within multiple classes. So when I compile a project with multiple main functions, where is the &quot;entry point&quot;? How does the compiler know where to start?


Multiple Main Functions

I&#39;m using json.net to deserialize a `DateTimeOffset`, but it is ignoring the specified timezone and converting the datetime to the local offset. For example, given

    var content = @&quot;{&quot;&quot;startDateTime&quot;&quot;:&quot;&quot;2012-07-19T14:30:00+09:30&quot;&quot;}&quot;;

When deserialised using:

    var jsonSerializerSettings = new JsonSerializerSettings() { DateFormatHandling = DateFormatHandling.IsoDateFormat, DateParseHandling = DateParseHandling.DateTimeOffset, DateTimeZoneHandling = DateTimeZoneHandling.RoundtripKind };
    var obj = JsonConvert.DeserializeObject(content, jsonSerializerSettings);

The obj will contain a property containing a `DateTimeOffset` but the value will be `2012-07-19T15:30:00+10:30` i.e. converted to the local timezone instead of preserving the original timezone.

Is there a way to get the value to be parsed as expected so that the resulting `DateTimeOffset` property will match the supplied value?

Why does Json.NET DeserializeObject change the timezone to local time?

What is the difference between the `Dictionary.Add` method and the indexer `Dictionary[key] = value`? 

Difference of Dictionary.Add vs Dictionary[key]=value

I am a newbie in timer in wpf and I need a code that every 5mins there is a message box will pop up. .can anyone help me for the simple code of timer. 

That&#39;s what I tried so far:

    System.Windows.Threading.DispatcherTimer dispatcherTimer = new System.Windows.Threading.DispatcherTimer(); 
    private void test() 
    { 
        dispatcherTimer.Tick += new EventHandler(dispatcherTimer_Tick); 
        dispatcherTimer.Interval = new TimeSpan(0, 0, 1); 
        dispatcherTimer.Start(); 
    } 
    private void dispatcherTimer_Tick(object sender, EventArgs e)
    { 
        // code goes here 
    } 

    private void button1_Click(object sender, RoutedEventArgs e)
    { 
        test(); 
    } 

How do I create a timer in WPF?

I am trying to write a function which basically converts an array of strings to an array of strings where all the doubles in the array are rounded to the number of decimalplaces i set. There can also be strings in the array which are no double values at all.

    string[,] values = new string[1, 3];
    
    values[0, 0] = &quot;hello&quot;;
    values[0, 1] = &quot;0.123&quot;;
    values[0, 2] = &quot;0,123&quot;;
    
    int decimalPlaces = 2;
    
    double tmp;
    string format = &quot;F&quot; + decimalPlaces.ToString();
    IFormatProvider provider = CultureInfo.InvariantCulture;
    for (int i = 0; i &lt; values.GetLength(0); i++)
    {
        for (int j = 0; j &lt; values.GetLength(1); j++)
        {
            if (double.TryParse(values[i, j], out tmp))
            {
                values[i, j] = tmp.ToString(format, provider);
            }
        }
    }
    
    Console.ReadLine();

The result has to be: &quot;hello&quot; , &quot;0.12&quot;, &quot;0.12&quot; but it is &quot;hello&quot;, &quot;123.00&quot;, &quot;0.12&quot; will treat the comma in the wrong way. Does anyone have a simple and efficient solution for this?

Parse strings to double with comma and point

Given a class like this: 

    public class Stock
    {
        public Stock() {}
        public Guid StockID { get; set; }
        public string Description { get; set; }
    }

Lets say I now have a `List&lt;Stock&gt;`. If I would like to retrieve a list of all the StockIDs and populate it into a IEnumerable or IList. Obviously I can do this.

    List&lt;Stock&gt; stockItems = new List&lt;Stock&gt;();
    List&lt;Guid&gt; ids = new List&lt;Guid&gt;();

    foreach (Stock itm in stockItems) 
    {
        ids.Add(itm.StockID);
    }

But is there some way I could use Linq to achieve the same result? I thought `Distinct()` might do it but couldn&#39;t work out how to achieve the desired result.



Return list of specific property of object using linq

How do I convert a dynamic object to a `Dictionary&lt;TKey, TValue&gt;` in C# What can I do?

    public static void MyMethod(object obj)
    {
        if (typeof(IDictionary).IsAssignableFrom(obj.GetType()))
        {
            // My object is a dictionary, casting the object:
            // (Dictionary&lt;string, string&gt;) obj;
            // causes error ...
        }
        else
        {
            // My object is not a dictionary
        }
    }


How to convert object to Dictionary&lt;TKey, TValue&gt; in C#?

I recently attempted to use the method Assert.Equals() when writing a new NUnit test.  Upon execution this method throws an `AssertionException` stating that 
`Assert.Equals should not be used for Assertions.`  This is a bit baffling at first glance.  What&#39;s going on here?

NUnit&#39;s Assert.Equals throws exception &quot;Assert.Equals should not be used for assertions&quot;

Is there a way to set up Remote Debugging (Msvscom.exe) on a machine that does not have Visual Studio installed?

I would like to attach to the service running on the VM so I can debug an issue in the code. I&#39;ve done this before but both machines have had VS installed.

The Dev box is running Visual Studio 2010/Windows 7. The VM is running Windows 7 without Visual Studio.

How to set up remote debugging on a machine without Visual Studio

This has got me stumped. I was trying to optimize some tests for Noda Time, where we have some type initializer checking. I thought I&#39;d find out whether a type *has* a type initializer (static constructor or static variables with initializers) before loading everything into a new `AppDomain`. To my surprise, a small test of this threw `NullReferenceException` - despite there being no null values in *my* code. It *only* throws the exception when compiled with no debug information.

Here&#39;s a short but complete program to demonstrate the problem:

    using System;
    
    class Test
    {
        static Test() {}
        
        static void Main()
        {
            var cctor = typeof(Test).TypeInitializer;
            Console.WriteLine(&quot;Got initializer? {0}&quot;, cctor != null);
        }    
    }

And a transcript of compilation and output:

&lt;!-- language: none --&gt;

    c:\Users\Jon\Test&gt;csc Test.cs
    Microsoft (R) Visual C# Compiler version 4.0.30319.17626
    for Microsoft (R) .NET Framework 4.5
    Copyright (C) Microsoft Corporation. All rights reserved.
    
    
    c:\Users\Jon\Test&gt;test
    
    Unhandled Exception: System.NullReferenceException: Object reference not set to
    an instance of an object.
       at System.RuntimeType.GetConstructorImpl(BindingFlags bindingAttr, Binder bin
    der, CallingConventions callConvention, Type[] types, ParameterModifier[] modifi
    ers)
       at Test.Main()
    
    c:\Users\Jon\Test&gt;csc /debug+ Test.cs
    Microsoft (R) Visual C# Compiler version 4.0.30319.17626
    for Microsoft (R) .NET Framework 4.5
    Copyright (C) Microsoft Corporation. All rights reserved.
    
    
    c:\Users\Jon\Test&gt;test
    Got initializer? True

Now you&#39;ll notice I&#39;m using .NET 4.5 (the release candidate) - which *may* be relevant here. It&#39;s somewhat tricky for me to test it with the various other original frameworks (in particular &quot;vanilla&quot; .NET 4) but if anyone else has easy access to machines with other frameworks, I&#39;d be interested in the results.

Other details:

- I&#39;m on an x64 machine, but this problem occurs with both x86 and x64 assemblies
- It&#39;s the &quot;debug-ness&quot; of the *calling* code which makes a difference - even though in the test case above it&#39;s testing it on its own assembly, when I tried this against Noda Time I didn&#39;t have to recompile `NodaTime.dll` to see the differences - just `Test.cs` which referred to it.
- Running the &quot;broken&quot; assembly on Mono 2.10.8 *doesn&#39;t* throw

Any ideas? Framework bug?

EDIT: Curiouser and curiouser. If you take out the `Console.WriteLine` call:

    using System;
    
    class Test
    {
        static Test() {}
        
        static void Main()
        {
            var cctor = typeof(Test).TypeInitializer;
        }    
    }

It now *only* fails when compiled with `csc /o- /debug-`. If you turn on optimizations, (`/o+`) it works. But if you include the `Console.WriteLine` call as per the original, both versions will fail.

Why would finding a type&#39;s initializer throw a NullReferenceException?

I&#39;m trying to make a simple program to test the new .NET async functionality within Visual Studio 2012. I generally use BackgroundWorkers to run time-consuming code asynchronously, but sometimes it seems like a hassle for a relatively simple (but expensive) operation. The new async modifier looks like it would be great to use, but unfortunately I just can&#39;t seem to get a simple test going.

Here&#39;s my code, in a C# console application:

&lt;!-- language: c# --&gt;

    static void Main(string[] args)
    {
        string MarsResponse = await QueryRover();
        Console.WriteLine(&quot;Waiting for response from Mars...&quot;);
        Console.WriteLine(MarsResponse);
        Console.Read();
    }
    
    public static async Task&lt;string&gt; QueryRover()
    {
        await Task.Delay(5000);
        return &quot;Doin&#39; good!&quot;;
    }

I checked out some examples on MSDN and it looks to me like this code should be working, but instead I&#39;m getting a build error on the line containing &quot;await QueryRover();&quot; Am I going crazy or is something fishy happening?

Await operator can only be used within an Async method

I have migrated a solution that is currently targeting .NET 4.0 in VS2010 to VS2012 and now I would like to re-target it to .Net 4.5

What I am not sure about is the NuGet packages. For example EF5, which I updated from EF4 in VS2010 turns out to be actually EF 4.4 as you can see here:

        &lt;Reference Include=&quot;EntityFramework, Version=4.4.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089, processorArchitecture=MSIL&quot;&gt;
          &lt;SpecificVersion&gt;False&lt;/SpecificVersion&gt;
          &lt;HintPath&gt;..\packages\EntityFramework.5.0.0\lib\net40\EntityFramework.dll&lt;/HintPath&gt;
        &lt;/Reference&gt;


I can also see the following in packages.config for the project:

    &lt;?xml version=&quot;1.0&quot; encoding=&quot;utf-8&quot;?&gt;
    &lt;packages&gt;
      &lt;package id=&quot;EntityFramework&quot; version=&quot;5.0.0&quot; targetFramework=&quot;net40&quot; /&gt;
    &lt;/packages&gt;


So my question is:

What is the best practice to re-target all NuGet packages that are currently set to target .NET 4.0 to target .NET 4.5?



Retargeting solution from .Net 4.0 to 4.5 - how to retarget the NuGet packages?

I&#39;ve installed Windows 8, Visual Studio 2012 but don&#39;t have a v4.5 directory in `%WINDIR%\Microsoft.NET\Framework`.

Have I done something wrong, or is .NET 4.5 different from others?

If it&#39;s because I have not installed the tools, is there a set of different tools to download? As far as I can tell, I am able to build .NET 4.5 apps OK.

Where is the .NET Framework 4.5 directory?

Under what scenarios would one want to use 

    public async Task AsyncMethod(int num)

instead of 

    public async void AsyncMethod(int num)


The only scenario that I can think of is if you need the task to be able to track its progress. 

Additionally, in the following method, are the async and await keywords unnecessary?

    public static async void AsyncMethod2(int num)
    {
        await Task.Factory.StartNew(() =&gt; Thread.Sleep(num));
    }

async/await - when to return a Task vs void?

What would be the best way to convert/wrap a &quot;classic&quot; asynchronous method that uses a callback to something that returns a (awaitable) Task?

For example, given the following method:

    public void GetStringFromUrl(string url, Action&lt;string&gt; onCompleted);

The only way I know of to wrap this into a method returning a task is:

    public Task&lt;string&gt; GetStringFromUrl(string url)
    {
         var t = new TaskCompletionSource&lt;string&gt;();

         GetStringFromUrl(url, s =&gt; t.TrySetResult(s));

         return t.Task;
    }

Is this the only way to accomplish this? 

And is there a way to wrap the call to GetStringFromUrl(url,callback) in the task itself (i.e. the call itself would run inside the task instead of synchronously)


Best way to convert callback-based async method to awaitable task

I&#39;m trying to wrap my head around the TPL, the new `async` / `await` features in C# 5, and the mysteries of `TaskCompletionSource`.

One thing that isn&#39;t clear to me is when to use `SetResult`, `SetException`, and `SetCancel` versus `TrySetResult`, `TrySetException` and `TrySetCancel`.

This is what MSDN has to say:

&gt; This operation will return false if the Task&lt;TResult&gt; is already in
&gt; one of the three final states: RanToCompletion, Faulted, or Canceled.
&gt; 
&gt; This method also returns false if the underlying Task&lt;TResult&gt; has
&gt; already been disposed.

Ok, I get that, but it doesn&#39;t really offer any guidance on when or why to use one over the other.  

So, what&#39;s the deal?

TaskCompletionSource : When to use SetResult() versus TrySetResult(), etc

I&#39;m using an API client that is completely asynchrounous, that is, each operation either returns `Task` or `Task&lt;T&gt;`, e.g:

    static async Task DoSomething(int siteId, int postId, IBlogClient client)
    {
        await client.DeletePost(siteId, postId); // call API client
        Console.WriteLine(&quot;Deleted post {0}.&quot;, siteId);
    }

Using the C# 5 async/await operators, what is the correct/most efficient way to start multiple tasks and wait for them all to complete:

    int[] ids = new[] { 1, 2, 3, 4, 5 };
    Parallel.ForEach(ids, i =&gt; DoSomething(1, i, blogClient).Wait());

or:

    int[] ids = new[] { 1, 2, 3, 4, 5 };
    Task.WaitAll(ids.Select(i =&gt; DoSomething(1, i, blogClient)).ToArray());

Since the API client is using HttpClient internally, I would expect this to issue 5 HTTP requests immediately, writing to the console as each one completes.

Using async/await for multiple tasks

In .NET 4.5 / C# 5, `IReadOnlyCollection&lt;T&gt;` is declared with a `Count` property:

    public interface IReadOnlyCollection&lt;out T&gt; : IEnumerable&lt;T&gt;, IEnumerable
    {
        int Count { get; }
    }

I am wondering, wouldn&#39;t it have made sense for `ICollection&lt;T&gt;` to implement the `IReadOnlyCollection&lt;T&gt;` interface as well:

    public interface ICollection&lt;T&gt; : IEnumerable&lt;T&gt;, IEnumerable, *IReadOnlyCollection&lt;T&gt;*

This would&#39;ve meant that classes implementing `ICollection&lt;T&gt;` would&#39;ve automatically implemented `IReadOnlyCollection&lt;T&gt;`. This sounds reasonable to me.

The `ICollection&lt;T&gt;` abstraction can be viewed as an extension of the `IReadOnlyCollection&lt;T&gt;` abstraction. Note that `List&lt;T&gt;`, for example, implements both `ICollection&lt;T&gt;` and `IReadOnlyCollection&lt;T&gt;`.

However it has not been designed that way. 

What am I missing here? Why would the current implementation have been chosen instead?

----------

**UPDATE**

I&#39;m looking for an answer that uses **Object Oriented design reasoning** to explain why:

 - A concrete class such as `List&lt;T&gt;` implementing both `IReadOnlyCollection&lt;T&gt;` *and* `ICollection&lt;T&gt;`

*is a better design than:*

 - `ICollection&lt;T&gt;` implementing `IReadOnlyCollection&lt;T&gt;` directly

----------

Also please note that this is essentially the same question as:

 1. Why doesn&#39;t `IList&lt;T&gt;` implement `IReadOnlyList&lt;T&gt;`?
 2. Why doesn&#39;t `IDictionary&lt;T&gt;` implement `IReadOnlyDictionary&lt;T&gt;`?

Why doesn&#39;t generic ICollection implement IReadOnlyCollection in .NET 4.5?

I am trying to replace my old fire-and-forget calls with a new syntax, hoping for more simplicity and it seems to be eluding me. Here&#39;s an example

    class Program
    {
        static void DoIt(string entry) 
        { 
            Console.WriteLine(&quot;Message: &quot; + entry);
        }
    
        static async void DoIt2(string entry)
        {
            await Task.Yield();
            Console.WriteLine(&quot;Message2: &quot; + entry);
        }
    
        static void Main(string[] args)
        {
            // old way
            Action&lt;string&gt; async = DoIt;
            async.BeginInvoke(&quot;Test&quot;, ar =&gt; { async.EndInvoke(ar); ar.AsyncWaitHandle.Close(); }, null);
            Console.WriteLine(&quot;old-way main thread invoker finished&quot;);
            // new way
            DoIt2(&quot;Test2&quot;);   
            Console.WriteLine(&quot;new-way main thread invoker finished&quot;);
            Console.ReadLine();
        }
    }

Both approaches do the same thing, however what I seem to have gained (no need to `EndInvoke` and close handle, which is imho still a bit debatable) I am losing in the new way by having to await a `Task.Yield()`, which actually poses a new problem of having to rewrite all existing async F&amp;F methods just to add that one-liner. Are there some invisible gains in terms of performance/cleanup?

How would I go about applying async if I can&#39;t modify the background method? Seems to me that there is no direct way, I would have to create a wrapper async method that would await Task.Run()?  

Edit: I now see I might be missing a real questions. The question is: Given a synchronous method A(), how can I call it asynchronously using `async`/`await` in a fire-and-forget manner without getting a solution that is more complicated than the &quot;old way&quot;  

Fire-and-forget with async vs &quot;old async delegate&quot;

Its been a while since I setup a Build Server so maybe I&#39;ve forgotten something or maybe .NET 4.5 is different from whatever version I did this with last time, but here is my problem.

I&#39;m trying to setup a build server to monitor a source control repository. Whenever something changes, I want the server to pull the changes and build the project. If there are no errors, I want to deploy the site to a web site running on the build server.

In the past when I did this, I thought that I was able to do this having only .NET installed, but when I try to build this project I get an error that &quot;C:\Program Files\MSBuild\Microsoft\VisualStudio\v11.0\WebApplications\Microsoft.WebApplication.targets&quot; is missing, and if I go and look I can see that it is missing. In fact there are no Visual Studio 11 targets files.

After a lot of thought and head scratching, I went out and got the &quot;Windows 8/.NET 4.5 SDK&quot; thinking that the .NET 4.5 SDK might install the targets files that I needed, but it did not unless I installed it wrong somehow.

So, what do I need to put on the Build Server in order to get the project to build. I would prefer not to have to install the full Visual Studio 2012. 

Build ASP.NET 4.5 without Visual Studio on Build Server

I&#39;m unable to declare 

    interface IMyInterface
    {
       async Task&lt;myObject&gt; MyMethod(Object myObj);
    }


The compiler tells me:

* The modifier async isn&#39;t valid for this item
* The async modifier can only be used for methods that have a body


Is this something that should be implemented, or does the nature of async &amp; await prohibit this from ever occurring?

Unable to declare Interface &quot; async Task&lt;myObject&gt; MyMethod(Object myObj); &quot;

I&#39;ve just moved away from IIS6 on Win2003 to IIS8 on Win2012 for hosting ASP.NET applications.

Within one particular folder in my application I need to Create &amp; Delete files.  After copying the files to the new server, I kept seeing the following errors when I tried to delete files:

&gt; Access to the path &#39;D:\WebSites\myapp.co.uk\companydata\filename.pdf&#39; is denied.

When I check IIS I see that the application is running under the DefaultAppPool account, however, I never set up Windows permissions on this folder to include **IIS AppPool\DefaultAppPool**

Instead, to stop screaming customers I granted the following permissions on the folder:

**IUSR**

 - Read &amp; Execute
 - List Folder Contents
 - Read
 - Write

**IIS_IUSRS**

 - Modify
 - Read &amp; Execute
 - List Folder Contents
 - Read
 - Write

This seems to have worked, but I am concerned that too many privileges have been set.  I&#39;ve read conflicting information online about whether **IUSR** is actually needed at all here.  Can anyone clarify which users/permissions would suffice to Create and Delete documents on this folder please?  Also, is IUSR part of the IIS_IUSRS group?

Update &amp; Solution
-
Please see [my answer below][1].  I&#39;ve had to do this sadly as some recent suggestions were not well thought out, or even safe (IMO).


  [1]: https://stackoverflow.com/a/36597241/792888

IIS_IUSRS and IUSR permissions in IIS8

I recently started following [this guide][1] to migrate my project to .NET 4.5.1 and Web Api 2.

The very first thing MS developer Rick Anderson asks you to do is change:

    WebApiConfig.Register(GlobalConfiguration.Configuration);

to

    GlobalConfiguration.Configure(WebApiConfig.Register);

in the global.asax file. Yet this is giving me an error when I try to build:

&gt;    Error	1	&#39;System.Web.Http.GlobalConfiguration&#39; does not contain a definition for &#39;Configure&#39;


My project is currently on MVC 5 and Web Api 2 and .NET 4.5.1, yet I think System.Web.Http still thinks it&#39;s the .NEt 4.0 version.

How can I go about fixing this?


Thank you.

Edit:

Here are my assembly bindings:

    &lt;assemblyBinding xmlns=&quot;urn:schemas-microsoft-com:asm.v1&quot;&gt;
	  &lt;dependentAssembly&gt;
		&lt;assemblyIdentity name=&quot;System.Net.Http.Formatting&quot; publicKeyToken=&quot;31BF3856AD364E35&quot; culture=&quot;neutral&quot;/&gt;
		&lt;bindingRedirect oldVersion=&quot;0.0.0.0-5.0.0.0&quot; newVersion=&quot;5.0.0.0&quot;/&gt;
	  &lt;/dependentAssembly&gt;
      &lt;!--
      &lt;dependentAssembly&gt;
        &lt;assemblyIdentity name=&quot;System.Web.Helpers&quot; publicKeyToken=&quot;31bf3856ad364e35&quot;/&gt;
        &lt;bindingRedirect oldVersion=&quot;1.0.0.0-3.0.0.0&quot; newVersion=&quot;3.0.0.0&quot;/&gt;
      &lt;/dependentAssembly&gt;
      &lt;dependentAssembly&gt;
        &lt;assemblyIdentity name=&quot;System.Web.Mvc&quot; publicKeyToken=&quot;31bf3856ad364e35&quot;/&gt;
        &lt;bindingRedirect oldVersion=&quot;1.0.0.0-5.0.0.0&quot; newVersion=&quot;5.0.0.0&quot;/&gt;
      &lt;/dependentAssembly&gt;
      &lt;dependentAssembly&gt;
        &lt;assemblyIdentity name=&quot;System.Web.WebPages&quot; publicKeyToken=&quot;31bf3856ad364e35&quot;/&gt;
        &lt;bindingRedirect oldVersion=&quot;1.0.0.0-3.0.0.0&quot; newVersion=&quot;3.0.0.0&quot;/&gt;
      &lt;/dependentAssembly&gt;
      &lt;dependentAssembly&gt;
        &lt;assemblyIdentity name=&quot;System.Web.Http&quot; publicKeyToken=&quot;31bf3856ad364e35&quot;/&gt;
        &lt;bindingRedirect oldVersion=&quot;1.0.0.0-5.0.0.0&quot; newVersion=&quot;5.0.0.0&quot;/&gt;
      &lt;/dependentAssembly&gt;
      &lt;dependentAssembly&gt;
        &lt;assemblyIdentity name=&quot;System.Web.WebPages.Razor&quot; publicKeyToken=&quot;31bf3856ad364e35&quot;/&gt;
        &lt;bindingRedirect oldVersion=&quot;1.0.0.0-3.0.0.0&quot; newVersion=&quot;3.0.0.0&quot;/&gt;
      &lt;/dependentAssembly&gt; --&gt;
    &lt;/assemblyBinding&gt;

Everything commented out after the top was commented because I was getting the error:

&gt;    Warning	2	Found conflicts between different versions of the same dependent assembly that could not be resolved.  These reference conflicts are listed in the build log when log verbosity is set to detailed.

and getting rid of the hard bindings was fixing that.

  [1]: http://www.asp.net/mvc/tutorials/mvc-5/how-to-upgrade-an-aspnet-mvc-4-and-web-api-project-to-aspnet-mvc-5-and-web-api-2

GlobalConfiguration.Configure() not present after Web API 2 and .NET 4.5.1 migration

In a Web API project I am overriding the normal authentication process to check tokens instead. The code looks something like this:

&lt;!-- language: lang-cs --&gt;

    if ( true ) // validate the token or whatever here
    {
    	var claims = new List&lt;Claim&gt;();
    	claims.Add( new Claim( ClaimTypes.Name, &quot;MyUser&quot; ) );
    	claims.Add( new Claim( ClaimTypes.NameIdentifier, &quot;MyUserID&quot; ) );
    	claims.Add( new Claim( ClaimTypes.Role, &quot;MyRole&quot; ) );
    
    	var claimsIdentity = new ClaimsIdentity( claims );
    
    	var principal = new ClaimsPrincipal( new[] { claimsIdentity } );
    	Thread.CurrentPrincipal = principal;
    	HttpContext.Current.User = principal;
    }

And then later when I apply the `[Authorize]` attribute to a controller, it fails to authorize.

Debug code confirms the same behavior:

&lt;!-- language: lang-cs --&gt;

    // ALWAYS FALSE!
    if ( HttpContext.Current.User.Identity.IsAuthenticated ) {
        // do something
    }

Why does it think the user is not authenticated even though I&#39;ve constructed a valid ClaimsIdentity and assigned it to the thread?


Content Type	Original Author	Original Content on Stackoverflow
Question	JMK	View Question on Stackoverflow
Solution 1 - C#	svick	View Answer on Stackoverflow

What can I do in C# 5 with .Net 4.5 that I couldn't do in C# 4 with .Net 4?

C# Problem Overview

C# Solutions

Solution 1 - C#

CORS with jQuery and XDomainRequest in IE8/9

How to refresh materialized view in oracle

Attributions