You will need to do it &quot;backwards&quot;; list all the types in an assembly and then checking the namespace of each type:

    using System.Reflection;
    private Type[] GetTypesInNamespace(Assembly assembly, string nameSpace)
    {
        return 
          assembly.GetTypes()
                  .Where(t =&gt; String.Equals(t.Namespace, nameSpace, StringComparison.Ordinal))
                  .ToArray();
    }

Example of usage:

    Type[] typelist = GetTypesInNamespace(Assembly.GetExecutingAssembly(), &quot;MyNamespace&quot;);
    for (int i = 0; i &lt; typelist.Length; i++)
    {
        Console.WriteLine(typelist[i].Name);
    }
    
---

For anything before .Net 2.0 where `Assembly.GetExecutingAssembly()` is not available, you will need a small workaround to get the assembly:

    Assembly myAssembly = typeof(&lt;Namespace&gt;.&lt;someClass&gt;).GetTypeInfo().Assembly;
    Type[] typelist = GetTypesInNamespace(myAssembly, &quot;&lt;Namespace&gt;&quot;);
    for (int i = 0; i &lt; typelist.Length; i++)
    {
        Console.WriteLine(typelist[i].Name);
    }


You&#39;ll need to provide a little more information...

Do you mean by using Reflection. You can iterate through an assemblies Manifest
and get a list of types using

       System.Reflection.Assembly myAssembly = Assembly.LoadFile(&quot;&quot;);

       myAssembly.ManifestModule.FindTypes()


If it&#39;s just in Visual Studio, you can just get the list in the intellisense window, or by opening the Object Browser (CTRL+W, J)



With Reflection you cal loop through all the types in an assembly. A type has a Namespace property which you use to filter only the namespace you&#39;re interested in.

In all the years I have been developing in PHP, I have always heard that using `eval()` is evil.

Considering the following code, wouldn&#39;t it make sense to use the second (and more elegant) option? If not, why?


    // $type is the result of an SQL statement, e.g.
    // SHOW COLUMNS FROM a_table LIKE &#39;a_column&#39;;
    // hence you can be pretty sure about the consistency
    // of your string.

    $type = &quot;enum(&#39;a&#39;,&#39;b&#39;,&#39;c&#39;)&quot;;

    // option one
    $type_1 = preg_replace(&#39;#^enum\s*$\s*\&#39;|\&#39;\s*$\s*$#&#39;, &#39;&#39;, $type);
    $result = preg_split(&#39;#\&#39;\s*,\s*\&#39;#&#39;, $type_1);

    // option two
    eval(&#39;$result = &#39;.preg_replace(&#39;#^enum#&#39;,&#39;array&#39;, $type).&#39;;&#39;);

When is eval evil in php?

With equals sign:

    object HelloWorld {
      def main(args: Array[String]) = {
        println(&quot;Hello!&quot;)
      }
    }

Without equals sign:

    object HelloWorld {
      def main(args: Array[String]) {
        println(&quot;Hello!&quot;)
      }
    }

Both of the above programs execute the same way. In the blog post *[Things I do not like in Scala][1]* I read that when the equals sign are missing, the method will return `Unit` (same as Java&#39;s `void`), so methods that return a value must use the equals sign. But methods that don&#39;t return a value can be written either way.

What is the best practice for using the equals sign in Scala methods that don&#39;t return a value?

  [1]: http://www.francolombardo.net/things-i-do-not-like-in-scala_post-69.html


When to use the equals sign in a Scala method declaration?

How can I get all classes within a namespace in C#?

How can I get all classes within a namespace?

<p>How can I get all classes within a namespace in C#?</p>


What characters are allowed and what is not allowed in a C# class name? Could you please help?

EDIT: To specify. What special characters are allowed? Please be specific, because links to 50 pages specs in high-technical language is not an answer that will help me a lot.

EXPLANATION: What I try to accomplish is to divide class name into distinguishable parts for example:

&gt; class Person@WorkOffice@Helper@Class 
&gt; 
&gt; {
&gt; 
&gt; }

And I think about a way of using some kind of character or something else to be able to get parts Person, WorkOffice, Helper and Class from this class name.

And yes, I know it&#39;s crazy, but I need it that way. I know that I can use attributes and reflection to store this data in class meta but this is not the case, so please don&#39;t suggest this solution.


What characters are allowed in C# class name?

The problem is that I need to know if it&#39;s version 3.5 SP 1. `Environment.Version()` only returns `2.0.50727.3053`.

I found [this solution][1], but I think it will take much more time than it&#39;s worth, so I&#39;m looking for a simpler one. Is it possible?

 [1]: http://blogs.msdn.com/astebner/archive/2006/08/02/687233.aspx


Is there an easy way to check the .NET Framework version?

I work for a tech company that does more prototyping than product shipment.  I just got asked what&#39;s the difference between C# and F#, why did MS create F# and what scenarios would it be better than C#.

I&#39;ve been using the language for a while now and I love it so I could easily go on about the great features of F# however I lack the experience in C# to say why we should use one over the other.

What&#39;s the benefits of using C# vs F# or F# vs C#?  

What are the benefits of using C# vs F# or F# vs C#?

My program draws text on its panel,but if I&#39;d like to remove the text I have to repaint.

How do I call(raise) the paint event by hand?

How do I call paint event?

I want to add some rows to a database using Linq to SQL, but I want to make a &quot;custom check&quot; before adding the rows to know if I must add, replace or ignore the incomming rows.
I&#39;d like to keep the trafic between the client and the DB server as low as possible and minimize the number of queries.

To do this, I want to fetch as little information as required for the validation, and only once at the beginning of the process.

I was thinking of doing something like this, but obviously, it doesn&#39;t work. Anyone have an idea?

    Dictionary&lt;int, DateTime&gt; existingItems = 
        (from ObjType ot in TableObj
            select (new KeyValuePair&lt;int, DateTime&gt;(ot.Key, ot.TimeStamp))
        )

What I&#39;d like to have at the end would be a Dictionary&lt;int, DateTime&gt;, without having to download the whole ObjectType objects from TableObject.

I also considered the following code, but I was trying to find a proper way:

    List&lt;int&gt; keys = (from ObjType ot in TableObj orderby ot.Key select ot.Key).ToList&lt;int&gt;();
    List&lt;DateTime&gt; values = (from ObjType ot in TableObj orderby ot.Key select ot.Value).ToList&lt;int&gt;();
    Dictionary&lt;int, DateTime&gt; existingItems = new Dictionary&lt;int, DateTime&gt;(keys.Count);
    for (int i = 0; i &lt; keys.Count; i++)
    {
        existingItems.Add(keys[i], values[i]);
    }

Convert Linq Query Result to Dictionary

I am using the `Array.Contains` method on a string array. How can I make that case-insensitive?

How can I make Array.Contains case-insensitive on a string array?

I&#39;m starting to really love extension methods... I was wondering if anyone her has stumbled upon one that really blew their mind, or just found clever. 

An example I wrote today:

**Edited due to other users&#39; comments:**

    public static IEnumerable&lt;int&gt; To(this int fromNumber, int toNumber) {
        while (fromNumber &lt; toNumber) {
            yield return fromNumber;
            fromNumber++;
        }
    }

This allows a for loop to be written as a foreach loop:

    foreach (int x in 0.To(16)) {
        Console.WriteLine(Math.Pow(2, x).ToString());
    }

I can&#39;t wait to see other examples! Enjoy!

What is the best or most interesting use of Extension Methods you&#39;ve seen?

I want to check if an object `o` is an instance of the class `C` or of a subclass of `C`.

For instance, if `p` is of class `Point` I want `x.instanceOf(Point.class)` to be `true` and also `x.instanceOf(Object.class)` to be `true`.

I want it to work also for boxed primitive types. For instance, if `x` is an `Integer` then `x.instanceOf(Integer.class)` should be `true`.

Is there such a thing? If not, how can I implement such a method?

Is there something like instanceOf(Class&lt;?&gt; c) in Java?

I wish to create a class in Python that I can add and remove attributes and methods. How can I acomplish that?

Oh, and please don&#39;t ask why.

Python: changing methods and attributes at runtime

Let&#39;s say we&#39;ve got these two classes:

    public class Derived : Base
    {
    	public Derived(string s)
    		: base(s)
    	{ }
    }
    
    public class Base
    {
    	protected Base(string s)
    	{
    
    	}
    }

How can I find out from within the constructor of `Base` that `Derived` is the invoker? This is what I came up with:

    public class Derived : Base
    {
    	public Derived(string s)
    		: base(typeof(Derived), s)
    	{ }
    }
    
    public class Base
    {
    	protected Base(Type type, string s)
    	{
    		
    	}
    }

Is there another way that doesn&#39;t require passing `typeof(Derived)`, for example, some way of using reflection from within `Base`&#39;s constructor?


From base class in C#, get derived type?

In C# can I cast a variable of type `object` to a variable of type `T` where `T` is defined in a `Type` variable?


Casting a variable using a Type variable

I would like to perform a test if an object is of a generic type. I&#39;ve tried the following without success: 

    public bool Test()
    {
        List&lt;int&gt; list = new List&lt;int&gt;();
        return list.GetType() == typeof(List&lt;&gt;);
    }

What am I doing wrong and how do I perform this test?

Testing if object is of generic type in C#

If I have a #define statement within a namespace as such:

    namespace MyNamespace
    {
      #define SOME_VALUE 0xDEADBABE
    }

Am I correct in saying that the #define statement is not restricted to the namespace? 

Is the following the &quot;correct&quot; thing to do?

    namespace MyNamespace
    {
      const unsigned int SOME_VALUE = 0xDEADBABE;
    }



#define statements within a namespace

I am currently moving code from my app_code folder to a class library.  I have tagged several methods with `[System.Web.Script.Serialization.ScriptIgnore]` attributes.  My class library cannot see this namespace.  My add references dialog cannot see this namespace.  How do I properly use this tag from a class library?

Here is the error:
*The type or namespace name &#39;ScriptIgnoreAttribute&#39; could not be found (are you missing a using directive or an assembly reference?)*


Adding System.Web.Script reference in class library

What is a &quot;namespace alias&quot; in C++? How is it used?

In C++, what is a &quot;namespace alias&quot;?

There seem to be different views on using &#39;using&#39; with respect to the std namespace.

Some say use &#39; `using namespace std`&#39;, other say don&#39;t but rather prefix std functions that are to be used with &#39; `std::`&#39; whilst others say use something like this:

    using std::string;
    using std::cout;
    using std::cin;
    using std::endl;
    using std::vector;

for all the std functions that are to be used.

What are the pros and cons of each?

Using std Namespace

I&#39;m working on an MVVM project, so I have folders in my project like Models, ViewModels, Windows, etc. Whenever I create a new class, Visual Studio automatically adds the folder name to the namespace designation instead of just keeping the project-level namespace. So, adding a new class to the ViewModels folder would result in the namespace, `MyProject.ViewModels` instead of just `MyProject`.

When I first encountered this, it annoyed me. My class names are pretty clear, sometimes even containing the name of the folder in them (e.g., `ContactViewModel`). I quickly found myself manually removing the folder name on the namespaces. I even tried at one point to create a custom class template (see [this question][1]), but I couldn&#39;t get that to work, so continued doing it manually.

I&#39;ve begun to wonder, though, if this convention exists for a good reason that I&#39;m just not seeing. I could see it being useful if you for some reason had lots of sets of identical class names organized into folders, but that doesn&#39;t seem like a particularly common scenario.

**Questions:**

 - Why is it common convention for namespace names to reflect folder structure?
 - Do you abide by this convention? Why?

  [1]: https://stackoverflow.com/questions/1220389/whats-wrong-with-my-visual-studio-2008-template

Content Type	Original Author	Original Content on Stackoverflow
Question	Micheal sonnal	View Question on Stackoverflow
Solution 1 - C#	Fredrik Mörk	View Answer on Stackoverflow
Solution 2 - C#	Eoin Campbell	View Answer on Stackoverflow
Solution 3 - C#	Gerrie Schenck	View Answer on Stackoverflow

How can I get all classes within a namespace?

C# Problem Overview

C# Solutions

Solution 1 - C#

Solution 2 - C#

Solution 3 - C#

When to use the equals sign in a Scala method declaration?

When is eval evil in php?

Attributions