`Server.MapPath()` eventually calls `HostingEnvironment.MapPath()`, but it creates a `VirtualPath` object with specific options:

&gt; The `VirtualPath` object passed to `HostingEnvironment.MapPath()` is constructed like this:
&gt;
    VirtualPath.Create(path, VirtualPathOptions.AllowAllPath|VirtualPathOptions.AllowNull);

***Edit**: in reality, the only difference is that you are allowed to pass null to `Server.MapPath()`, but not to `HostingEnvironment.MapPath()`*

`Server.MapPath()` requires an `HttpContext`. `HostingEnvironment.MapPath` does not. 

[`newCachedThreadPool()`][1] versus [`newFixedThreadPool()`][2]
  
When should I use one or the other? Which strategy is better in terms of resource utilization?


  [1]: http://docs.oracle.com/javase/8/docs/api/java/util/concurrent/Executors.html#newCachedThreadPool--
  [2]: http://docs.oracle.com/javase/8/docs/api/java/util/concurrent/Executors.html#newFixedThreadPool-int-

Executors.newCachedThreadPool() versus Executors.newFixedThreadPool()

I&#39;m pretty sure this is not a duplicate so bear with me for just a minute.

How can I programatically (C#) ZIP a file (in Windows) without using any third party libraries? I need a native windows call or something like that; I really dislike the idea of starting a process, but I will if I absolutely have to. A PInovke call would be much better.

Failing that, let me tell you what I&#39;m really trying to accomplish: I need the ability to let a user download a collection of documents in a single request. Any ideas on how to accomplish this?



How do I ZIP a file in C#, using no 3rd-party APIs?

Is there any difference between `Server.MapPath()` and `HostingEnvironment.MapPath()`? Does `Server.MapPath()` have any advantages over `HostingEnvironment.MapPath()`?

My original problem was mapping the file path on a server when the `HttpContext` is not present and I cannot pass a `Server` variable from `Global.asax` to my method. 

I used `HostingEnvironment.MapPath()` instead since it doesn&#39;t need `HttpContext`. Are there any situations when these two methods will give different results?


What is the difference between Server.MapPath and HostingEnvironment.MapPath?

Is there any difference between <code>Server.MapPath()</code> and <code>HostingEnvironment.MapPath()</code>? Does <code>Server.MapPath()</code> have any advantages over <code>HostingEnvironment.MapPath()</code>?
My original problem was mapping the file path on a server when the <code>HttpContext</code> is not present and I cannot pass a <code>Server</code> variable from <code>Global.asax</code> to my method.
I used <code>HostingEnvironment.MapPath()</code> instead since it doesn't need <code>HttpContext</code>. Are there any situations when these two methods will give different results?

Currently I am using following function to get the temporary folder path for current user:

    string tempPath = System.IO.Path.GetTempPath();

On some machines it gives me temp folder path of current user like: 

&gt; C:\Documents and Settings\administrator\Local Settings\Temp\

On some machines it gives me system temp folder path like: 
    
&gt; C:\Windows\TEMP

MSDN Documentation also says that above API returns current system&#39;s temporary folder.

Is there any other API available which gives me current user&#39;s temporary folder path like this:

&gt; C:\Documents and Settings\administrator\Local Settings\Temp\

How to get temporary folder for current user

 I create a new form and call from the parent form as follows:   

    loginForm = new SubLogin();   
    loginForm.Show();

I need to display the child form at the centre of the parent. So,in the child form load I do the foll:`

    Point p = new Point(this.ParentForm.Width / 2 - this.Width / 2, this.ParentForm.Height / 2 - this.Height / 2);
    this.Location = p;

But this is throwing error as parent form is null. I tried setting the Parent property as well, but didn&#39;t help. Any inputs on this?

Show a child form in the centre of Parent form in C#

I have a WPF xaml file describing a section of a GUI and I&#39;d like the enabling/disabling of a particular control to be dependent on two others. The code looks something like this at the moment:

    &lt;ComboBox Name=&quot;MyComboBox&quot;
              IsEnabled=&quot;{Binding ElementName=SomeCheckBox, Path=IsChecked}&quot;/&gt;

But I&#39;d like it to be dependant on another checkbox as well so something like:

    &lt;ComboBox Name=&quot;MyComboBox&quot;
              IsEnabled=&quot;{Binding ElementName=SomeCheckBox&amp;AnotherCheckbox, Path=IsChecked}&quot;/&gt;

What&#39;s the best way to go about that? I can&#39;t help feeling I&#39;m missing something obvious or going about this the wrong way?

C# WPF IsEnabled using multiple bindings?

I need to deserialize some JavaScript object represented in JSON to an appropriate C# class. Given the nice features of automatic properties, I would prefer having them in these classes as opposed to just having fields. Unfortunately, the .NET serialization engine (at least, by default) totally ignores automatic properties on deserialization and only cares about the backing field, which is obviously not present in the JavaScript object.

Given that there&#39;s [no standard way to name backing fields][1] and to be honest I don&#39;t even want to bother with the &quot;let&#39;s create a JavaScript object that looks like it had C# backing fields&quot; approach as it sounds a bit dirty, the only way I could serialize JavaScript fields to C# auto-properties if I could force the serialization engine to somehow ignore the backing field and use the property directly. Unfortunately, I can&#39;t figure out how this is done or if this can be done at all. Any ideas would be appreciated.

**EDIT**: Here&#39;s an example:

Javascript:

    function Cat()
    {
        this.Name = &quot;Whiskers&quot;;
        this.Breed = &quot;Tabby&quot;;
    }
    var cat = new Cat();

This is then serialized to &quot;{Name: &#39;Whiskers&#39;}&quot;.

The C# class:

    [Serializable()]
    public class Cat
    {
        public string Name { get; set; }
        public string Breed { get; set; }
    }

And the deserialization code, that fails:

    new DataContractJsonSerializer(typeof(Cat)).ReadObject(inputStream);

And it is apparent from the exception that it fails because it is looking for the backing field.

**EDIT2**: Here&#39;s the exception, if that helps (no inner exceptions):

&gt; System.Runtime.Serialization.SerializationException
&gt;
&gt; &quot;The data contract type &#39;Test.Cat&#39;
&gt; cannot be deserialized because the
&gt; required data members
&gt; &#39;`&lt;Name&gt;k__BackingField, &lt;Breed&gt;k__BackingField`&#39; were not
&gt; found.&quot;

  [1]: https://stackoverflow.com/questions/371398/problems-with-auto-properties


C# automatic property deserialization of JSON

Can structs contain fields of reference types? And if they can is this a bad practice?  

Can structs contain fields of reference types

I&#39;ve programmed in both classic ASP and ASP.NET, and I see different tags inside of the markup for server side code.  

I&#39;ve recently come across a [good blog on MSDN][1] that goes over the difference between:

- `&lt;%=` (percentage together with equals sign) and 
- `&lt;%#` (percent sign and hash/pound/octothorpe) 

(`&lt;%#` is evaluated only at databind, and `&lt;%=` is evaluated at render), but I also see:

- `&lt;%$` (percent and dollar sign) and 
- `&lt;%@` (percent sign and at symbol).

I believe `&lt;%@` loads things like assemblies and perhaps `&lt;%$` loads things from config files?  I&#39;m not too sure.

I was just wondering if anyone could clarify all of this for me and possibly explain why it&#39;s important to create so many different tags that seemingly have a similar purpose?


  [1]: http://blogs.msdn.com/dancre/archive/2007/02/13/the-difference-between-lt-and-lt-in-asp-net.aspx

&lt;%$, &lt;%@, &lt;%=, &lt;%# ... what&#39;s the deal?

How to disable browser&#39;s BACK Button (across browsers)?


Disable browser&#39;s back button

When using ASP.Net routing, how can you get the RouteData from the code-behind?

I know you can get it from the GetHttpHander method of the RouteHandler (you get handed the RequestContext), but can you get this from the code-behind?

Is there anything like...

    RequestContext.Current.RouteData.Values[&quot;whatever&quot;];

...that you can access globally, like you can do with HttpContext?

Or is it that RouteData is only meant to be accessed from inside the RouteHandler?

How can you access RouteData from the code-behind?

We have a web application that&#39;s deployed to many websites with only frontend changes, the shared backend portion has it&#39;s DLL in the GAC so we only have to update that one dll and all the sites get the update.

Is there a way to override the GAC with a DLL in the /bin folder to test out new features before they get released?

Dll in both the bin and the gac, which one gets used?

I would expect this:

    &lt;asp:CheckBox    ID=&quot;CheckBox1&quot;    runat=&quot;server&quot; CssClass=&quot;myClass&quot; /&gt;
    &lt;asp:RadioButton ID=&quot;RadioButton1&quot; runat=&quot;server&quot; CssClass=&quot;myClass&quot; /&gt;
    &lt;asp:TextBox     ID=&quot;TextBox1&quot;     runat=&quot;server&quot; CssClass=&quot;myClass&quot; /&gt;

...to render like this *(with some attributes removed for simplicity)*:

    &lt;input id=&quot;CheckBox1&quot;    type=&quot;checkbox&quot; class=&quot;myClass&quot; /&gt;
    &lt;input id=&quot;RadioButton1&quot; type=&quot;radio&quot;    class=&quot;myClass&quot; /&gt;
    &lt;input id=&quot;TextBox1&quot;     type=&quot;text&quot;     class=&quot;myClass&quot; /&gt; 

...when in fact, the `RadioButton` and `CheckBox` get wrapped with a `span` tag and the CSS class gets applied there.

    &lt;span class=&quot;myClass&quot;&gt;&lt;input id=&quot;CheckBox1&quot;    type=&quot;checkbox&quot; /&gt;&lt;/span&gt; 
    &lt;span class=&quot;myClass&quot;&gt;&lt;input id=&quot;RadioButton1&quot; type=&quot;radio&quot;    /&gt;&lt;/span&gt; 
    &lt;input type=&quot;text&quot; id=&quot;TextBox1&quot; class=&quot;myClass&quot; /&gt; 

Is there a reason for this and is there a way to avoid it? It makes jQuery selectors ugly since you can&#39;t catch all of them with:

    $(&quot;input.myClass&quot;)

Granted it is just going to:

    $(&quot;input.myClass, span.myClass input&quot;)

...but that is ugly. I could write my own selector, but again not as elegant as it should be.


Content Type	Original Author	Original Content on Stackoverflow
Question	empi	View Question on Stackoverflow
Solution 1 - C#	Philippe Leybaert	View Answer on Stackoverflow
Solution 2 - C#	Mark Struzinski	View Answer on Stackoverflow

What is the difference between Server.MapPath and HostingEnvironment.MapPath?

C# Problem Overview

C# Solutions

Solution 1 - C#

Solution 2 - C#

How do I ZIP a file in C#, using no 3rd-party APIs?

Executors.newCachedThreadPool() versus Executors.newFixedThreadPool()

Attributions