If the types with the same name exist in both namespaces, you have a couple of options:

1) If the number of types is small, create an alias for that type:

    using BorderStyle3d = tool.3dChartLib.BorderStyle;

2) If the number of types is large, you can create an alias for the namespace:

    using t3d = tool.3dChartLib;

Then in your code...

    t3d.BorderStyle

You can use full type names, or create aliases:

    using 2dBorderStyle = tool.2dChartLib.BorderStyle;

Use [namespace alias](https://web.archive.org/web/20161011175559/https://msdn.microsoft.com/en-us/library/c3ay4x3d(v=vs.80).aspx)

    using twoDimensionLib = tool.2dChartLib;
    using threeDimensionLib tool.3dChartLib;



Is there a way for a Chrome extension to read properties from `manifest.json`? I&#39;d like to be able to read the version number and use it in the extension.

Read the version from manifest.json

    Error: The connection to &lt;websocket&gt; was interrupted while the page was loading.
    Source File: localhost/socket.io/node_modules/socket.io-client/dist/socket.io.js
    Line: 2371

I am new to socket.io and I have tried to search for this, but I didn&#39;t get an answer.

Websocket is interrupted when I refresh page on Firefox. That&#39;s why server side is waiting to authorise client.

Here is code:
**server.js**
```javascript
var app = require(&#39;http&#39;).createServer(handler),
  io = require(&#39;socket.io&#39;).listen(app),
  fs = require(&#39;fs&#39;)

app.listen(8080);

function handler(req, res) {
  fs.readFile(__dirname + &#39;/index.html&#39;,
    function (err, data) {
      if (err) {
        res.writeHead(500);
        return res.end(&#39;Error loading index.html&#39;);
      }
      res.writeHead(200);
      res.end(data);
    });
}

io.sockets.on(&#39;connection&#39;, function (socket) {
  socket.emit(&#39;news&#39;, {
    hello: &#39;world&#39;
  });
  socket.on(&#39;my other event&#39;, function (data) {
    //alert(JSON.stringify(data));  
    console.log(data);
  });

});
```


**index.html**
```html
&lt;script src=&quot;node_modules/socket.io-client/dist/socket.io.js&quot;&gt;&lt;/script&gt;
&lt;script&gt;
  var socket = io.connect(&#39;http://localhost:8080&#39;);

  socket.on(&#39;news&#39;, function (data) {
    alert(JSON.stringify(data));
    console.log(data);
    socket.emit(&#39;my next event&#39;, { my: &#39;data&#39; });
  });

&lt;/script&gt;
```

&quot;websocket was interrupted while page is loading&quot; on Firefox for Socket.io

I&#39;m trying to create a manager class to use with my charting tool, the problem is the tool I use, uses the same names for both a 3d and 2d charts which is resulting in ambiguous reference when I try to add the 2d library.. any ideas how best to resolve this?

For example,

    using tool.2dChartLib;
    using tool.3dChartLib;


BorderStyle is a member of both of these

I&#39;ve tried casting the areas where I use BorderStyle. I suppose it could work if i just reference `tool` but then that would mean I&#39;d have hundreds of `tool.class` lines instead of `class`

Resolving an ambiguous reference

I'm trying to create a manager class to use with my charting tool, the problem is the tool I use, uses the same names for both a 3d and 2d charts which is resulting in ambiguous reference when I try to add the 2d library.. any ideas how best to resolve this?
For example,
<pre><code class="hljs language-arduino">using tool.2dChartLib;
using tool.3dChartLib;
</code></pre>
BorderStyle is a member of both of these
I've tried casting the areas where I use BorderStyle. I suppose it could work if i just reference <code>tool</code> but then that would mean I'd have hundreds of <code>tool.class</code> lines instead of <code>class</code>

    using System;
    using System.Xml;
    using System.Collections.Generic;
    using System.Linq;
    using System.Text;
    
    namespace ConsoleApplication1
    {
        class Program
        {
            static void Main(string[] args)
            {
                SortedSet&lt;Player&gt; PlayerList = new SortedSet&lt;Player&gt;();
    
                while (true)
                {
                    string Input;
                    Console.WriteLine(&quot;What would you like to do?&quot;);
                    Console.WriteLine(&quot;1. Create new player and score.&quot;);
                    Console.WriteLine(&quot;2. Display Highscores.&quot;);
                    Console.WriteLine(&quot;3. Write out to XML file.&quot;);
                    Console.Write(&quot;Input Number: &quot;);
                    Input = Console.ReadLine();
                    if (Input == &quot;1&quot;)
                    {
                        Player player = new Player();
                        string PlayerName;
                        string Score;
    
                        Console.WriteLine();
                        Console.WriteLine(&quot;-=CREATE NEW PLAYER=-&quot;);
                        Console.Write(&quot;Player name: &quot;);
                        PlayerName = Console.ReadLine();
                        Console.Write(&quot;Player score: &quot;);
                        Score = Console.ReadLine();
    
                        player.Name = PlayerName;
                        player.Score = Convert.ToInt32(Score);

                        //====================================
                        //ERROR OCCURS HERE
                        //====================================
                        PlayerList.Add(player);
                           
    
                        Console.WriteLine(&quot;Player \&quot;&quot; + player.Name + &quot;\&quot; with the score of \&quot;&quot; + player.Score + &quot;\&quot; has been created successfully!&quot; );
                        Console.WriteLine();
                    }
                    else
                    {
                        Console.WriteLine(&quot;INVALID INPUT&quot;);
                    }
                }
            }
        }
    }

So i keep getting the &quot;

&gt; At least one object must implement IComparable.

&quot; when trying to add a second player, the first one works, but the second one doesn&#39;t.
I also MUST use `SortedSet` because that is the requirement for the work, it&#39;s school work.

At least one object must implement IComparable

I have a popuplated `IEnumerable&lt;User&gt;` collection.

I want to remove an item from it, how can I do this?

    foreach(var u in users)
    {
      if(u.userId = 1123)
      {
        // remove!
      }
    }


I know your not suppose to remove while looping, so I don&#39;t mind either creating a new collection or removing it after.

But I don&#39;t know how to remove an item, kind of lost for some reason on this!


Alternately which I am confused on also, how can I create a new collection like:

    IEnumerable&lt;User&gt; modifiedUsers = new List&lt;User&gt;();
    
    foreach(var u in users)
    {
       if(u.userId != 1233)
       {
            modifiedUsers.add ??????
       }
    }

How can I add to the collection?

Remove an item from an IEnumerable&lt;T&gt; collection

I&#39;m trying to add SignalR to my project (ASPNET MVC 4). But I can&#39;t make it work.

In the below image you can see the error I&#39;m receiving.
![image][1]
I&#39;ve read a lot of stackoverflow posts but none of them is resolving my issue.

This is what I did so far:

    1) Ran Install-Package Microsoft.AspNet.SignalR -Pre
    2) Added RouteTable.Routes.MapHubs(); in Global.asax.cs Application_Start()
    3) If I go to http://localhost:9096/Gdp.IServer.Web/signalr/hubs I can see the file content
    4) Added &lt;modules runAllManagedModulesForAllRequests=&quot;true&quot;/&gt; to Web.Config
    5) Created folder Hubs in the root of the MVC application
    6) Moved jquery and signalR scripts to /Scripts/lib folder (I&#39;m not using jquery 1.6.4, I&#39;m using the latest)

This is my Index.cshtml

    &lt;h2&gt;List of Messages&lt;/h2&gt;
    
    &lt;div class=&quot;container&quot;&gt;
        &lt;input type=&quot;text&quot; id=&quot;message&quot; /&gt;
        &lt;input type=&quot;button&quot; id=&quot;sendmessage&quot; value=&quot;Send&quot; /&gt;
        &lt;input type=&quot;hidden&quot; id=&quot;displayname&quot; /&gt;
        &lt;ul id=&quot;discussion&quot;&gt;
        &lt;/ul&gt;
    &lt;/div&gt;
    
    @section pageScripts
    {
        &lt;!--Reference the SignalR library. --&gt;
        &lt;script src=&quot;@Url.Content(&quot;~/Scripts/jquery.signalR-1.0.0-rc1.min.js&quot;)&quot; type=&quot;text/javascript&quot;&gt;&lt;/script&gt;
        &lt;!--Reference the autogenerated SignalR hub script. --&gt;
        &lt;script type=&quot;text/javascript&quot; src=&quot;~/signalr/hubs&quot;&gt;&lt;/script&gt;
        &lt;script src=&quot;@Url.Content(&quot;~/Scripts/map.js&quot;)&quot; type=&quot;text/javascript&quot;&gt;&lt;/script&gt;
    }

This is my IServerHub.cs file (located inside Hubs folder)

    namespace Gdp.IServer.Ui.Web.Hubs
    {
        using Microsoft.AspNet.SignalR.Hubs;
        [HubName(&quot;iServerHub&quot;)]
        public class IServerHub : Hub
        {
            public void Send(string name, string message)
            {
                Clients.All.broadcastMessage(name, message);
            }
        }
    }

And this is map.js

    $(function () {
    
        // Declare a proxy to reference the hub. 
        var clientServerHub = $.connection.iServerHub;
    
        // Create a function that the hub can call to broadcast messages.
        clientServerHub.client.broadcastMessage = function (name, message) {
            $(&#39;#discussion&#39;).append(&#39;&lt;li&gt;&lt;strong&gt;&#39; + name + &#39;&lt;/strong&gt;:&amp;nbsp;&amp;nbsp;&#39; + message + &#39;&lt;/li&gt;&#39;);
        };
    
        // Get the user name and store it to prepend to messages.
        $(&#39;#displayname&#39;).val(prompt(&#39;Enter your name:&#39;, &#39;&#39;));
    
        // Set initial focus to message input box.  
        $(&#39;#message&#39;).focus();
    
        // Start the connection.
        $.connection.hub.start().done(function () {
            $(&#39;#sendmessage&#39;).click(function () {
                // Html encode display name and message. 
                var encodedName = $(&#39;&lt;div /&gt;&#39;).text($(&#39;#displayname&#39;).val()).html();
                var encodedMsg = $(&#39;&lt;div /&gt;&#39;).text($(&#39;#message&#39;).val()).html();
    
                // Call the Send method on the hub. 
                clientServerHub.server.send(encodedName, encodedMsg);
    
                // Clear text box and reset focus for next comment. 
                $(&#39;#message&#39;).val(&#39;&#39;).focus();
            });
        });
    });
    
The DLL&#39;s I see references for SignalR are:

 1. Microsoft.AspNet.SignalR.Core
 2. Microsoft.AspNet.SignalR.Owin
 3. Microsoft.AspNet.SignalR.SystemWeb

Any ideas how to get it work?
Should I make any change because the scripts are in /Script/lib folder?

**NOTE**
I&#39;m following the instruction found [here][2] on how to set up Windsor Castle to make it work with SignalR, and again, seems that the proxy cannot be created and I&#39;m getting the same error:

    Cannot read property client of undefined

meaning that the proxy to the hub was not created

This is how I have it in the server

    public class IncidentServerHub : Hub

and like this in the client 

    var clientServerHub = $.connection.incidentServerHub;

Again, I can see the dynamically created file here:

    /GdpSoftware.Server.Web/signalr/hubs

So, why is the proxy not created?



  [1]: http://i.stack.imgur.com/AmM4j.jpg
  [2]: http://blog.mirajavora.com/signalr-dependency-injection

SignalR cannot read property client of undefined

I want to use the [`TimeZoneInfo.FindSystemTimeZoneById(String)`][1] method, but I don&#39;t know what values to use as the input?

Where can I get a list of values for `id` required for `FindSystemTimeZoneById`?


  [1]: http://msdn.microsoft.com/en-us/library/system.timezoneinfo.findsystemtimezonebyid.aspx

What value should I pass into TimeZoneInfo.FindSystemTimeZoneById(String)?

In some certain scenario it appeared to be useful for me to have a short-spoken, readable way to get `null` instead of the `KeyNotFoundException` while accessing dictionary value by key, when there is no such key in the dictionary.

The first thing that came into my mind was an extension method:

    public static U GetValueByKeyOrNull&lt;T, U&gt;(this Dictionary&lt;T, U&gt; dict, T key)
            where U : class //it&#39;s acceptable for me to have this constraint
    {
        if (dict.ContainsKey(key))
            return dict[key];
        else 
            //it could be default(U) to use without U class constraint
            //however, I didn&#39;t need this.
            return null; 
    }

But it&#39;s not very short-spoken actually, when you write something like this:

    string.Format(&quot;{0}:{1};{2}:{3}&quot;,                                                 
                  dict.GetValueByKeyOrNull(&quot;key1&quot;),
                  dict.GetValueByKeyOrNull(&quot;key2&quot;),
                  dict.GetValueByKeyOrNull(&quot;key3&quot;),
                  dict.GetValueByKeyOrNull(&quot;key4&quot;));

I&#39;d say, it would be much better to havesomething close to base syntax: `dict[&quot;key4&quot;]`.

Then I came up with an idea to have a class with a `private` dictionary field, which exposed the functionality I need:

    public class MyDictionary&lt;T, U&gt; //here I may add any of interfaces, implemented
                                    //by dictionary itself to get an opportunity to,
                                    //say, use foreach, etc. and implement them
                                    // using the dictionary field.
            where U : class
    {
        private Dictionary&lt;T, U&gt; dict;

        public MyDictionary()
        {
            dict = new Dictionary&lt;T, U&gt;();
        }

        public U this[T key]
        {
            get
            {
                if (dict.ContainsKey(key))
                    return dict[key];
                else
                    return null;
            }
            set
            {
                dict[key] = value;
            }
        }
    }

But it seems a little overhead to get the slight change in the basic behaviour.

One more workaround could be to define a `Func` in the current context like this:

    Func&lt;string, string&gt; GetDictValueByKeyOrNull = (key) =&gt;
    {
        if (dict.ContainsKey(key))
            return dict[key];
        else
            return null;
    };

so it could be utilized like `GetDictValueByKeyOrNull(&quot;key1&quot;)`.

Could you, please, give me any more suggestions or help to choose a better one?

Content Type	Original Author	Original Content on Stackoverflow
Question	Sayse	View Question on Stackoverflow
Solution 1 - C#	Adam Robinson	View Answer on Stackoverflow
Solution 2 - C#	Sergey Berezovskiy	View Answer on Stackoverflow
Solution 3 - C#	Tilak	View Answer on Stackoverflow

Resolving an ambiguous reference

C# Problem Overview

C# Solutions

Solution 1 - C#

Solution 2 - C#

Solution 3 - C#

"websocket was interrupted while page is loading" on Firefox for Socket.io

Read the version from manifest.json

Attributions