MEF has **potential**, but as a DI container, it lacks:

1. Code as Configuration 
2. Auto Registration 
3. XML configuration (not so important to me) 
4. Custom Lifetimes 
5. Interception 

Those things are pretty important. 

For Lifestyle it lacks: 

1. Per graph 
2. Web Request Context 
3. Thread Context 
4. Session Context 
5. Pooled 
6. Scoped 
7. Custom Reference 

References: - Mark Seemann&#39;s book &quot;Dependency Injection in .NET&quot; 

In my world DI is based on three dimensions, Object Composition, Lifetime Management, and Interception. This is what other full-blown DI containers, such as Unity, Castle Windsor, and Ninject facilitates. MEF only supports the one dimension, Object Composition. It is doing this quite well, but the remaining two dimensions are not supported in MEF.

In the documentation of hardware that allows us to control it via UDP/IP,
I found the following fragment:

&gt; In this communication protocol, DWORD is a 4 bytes data, WORD is a 2 bytes data,
&gt; BYTE is a single byte data. The storage format is little endian, namely 4 bytes (32bits) data is stored as: d7-d0, d15-d8, d23-d16, d31-d24; double bytes (16bits) data is stored as: d7-d0 , d15-d8.

I am wondering how this translates to C#?
Do I have to convert stuff before sending it over?
For example, if I want to send over a 32 bit integer, or a 4 character string?





C# little endian or big endian?

I&#39;m having a problem using the java.text.MessageFormat object.

I&#39;m trying to create SQL insert statements.   The problem is, when I do something like this:

    MessageFormat messageFormat = &quot;insert into {0} values ( &#39;{1}&#39;, &#39;{2}&#39;, &#39;{3}&#39;, {4} )&quot;;
    Object[] args = { str0, str1, str2, str3, str4 };
    String result = messageFormat.format(args);

I get this for the value of `result`:

    &quot;insert into &lt;str0&gt; values ( {1}, {2}, {3}, &lt;str4&gt; )&quot;


As you can see, the problem is that any of the target locations that are enclosed by single quotes do not get replaced by arguments.   I have tried using double single quotes like this: `&#39;&#39;{1}&#39;&#39;` and escaped characters like this: `\&#39;{1}\&#39;` but it still gives the same result. 

edit: I forgot to mention that I also tried `&#39;&#39;&#39;{1}&#39;&#39;&#39;`.   The result is: `&quot;insert into &lt;str0&gt; values ( &#39;{1}&#39;, &#39;{2}&#39;, &#39;{3}&#39;, &lt;str4&gt; )&quot;`.   It is keeping the original quotes around but still not inserting the values.

How can I resolve this issue?   For the record, I am using JDK 6u7.

Java MessageFormat - How can I insert values between single quotes?

It&#39;s been said on the blogosphere and by Microsoft themselves that MEF isn&#39;t another IoC container.

OK...but why? It seems the same to me. Maybe it&#39;s not as good as Unity or [Castle Windsor][1], but it still fits the definition, doesn&#39;t it?

Why isn&#39;t MEF an IoC Container like Unity or Castle Windsor?

  [1]: https://en.wikipedia.org/wiki/Castle_Project#Features


Why exactly isn&#39;t MEF a DI/IoC container?

It's been said on the blogosphere and by Microsoft themselves that MEF isn't another IoC container.
OK...but why? It seems the same to me. Maybe it's not as good as Unity or <a href="https://en.wikipedia.org/wiki/Castle_Project#Features" target="_blank" rel="noopener noreferrer">Castle Windsor</a>, but it still fits the definition, doesn't it?
Why isn't MEF an IoC Container like Unity or Castle Windsor?

I&#39;m using Entity Framework O/R mapper from Microsoft and using entity classes (generated classes that are mapped to DB objects) as a business objects. 
Is this OK? Please state your cons or pros. What to do in a case of WCF communication between business layer and presentation, how to send those objects as data members?


Using Entity Framework entities as business objects?

Is there any class in the .NET framework that can read/write standard .ini files:

    [Section]
    &lt;keyname&gt;=&lt;value&gt;
    ...


Delphi has the `TIniFile` component and I want to know if there is anything similar for C#? 


Reading/writing an INI file

Is there a class in the standard library of .NET that gives me the functionality to create random variables that follow Gaussian distribution? 


Random Gaussian Variables

If I need to throw an exception from within my application which of the built-in .NET exception classes can I use? Are they all fair game? When should I derive my own?

Which built-in .NET exceptions can I throw from my application?

In .NET, Windows Forms have an event that fires before the Form is loaded (Form.Load), but there is no corresponding event that is fired AFTER the form has loaded.  I would like to execute some logic after the form has loaded.

Can anyone advise on a solution?

How do I execute code AFTER a form has loaded?

Interface Builder can be used for basic dependency injection in a Cocoa app, but is anyone aware of more complete dependency injection frameworks for Objective-C/Cocoa for when you don&#39;t want to instantiate objects in a NIB file?

**Edit**

To clarify, I recognize that IB can be used for basic DI, but I&#39;m looking for a framework with more complete functionality, including separate production and testing configurations, along the lines of Groovy or Springs.



Dependency injection framework for Cocoa?

I have a bunch of Spring beans which are picked up from the classpath via annotations, e.g.

    @Repository(&quot;personDao&quot;)
    public class PersonDaoImpl extends AbstractDaoImpl implements PersonDao {
        // Implementation omitted
    }

In the Spring XML file, there&#39;s a [PropertyPlaceholderConfigurer][1] defined:

&lt;!-- language: lang-xml --&gt;

    &lt;bean id=&quot;propertyConfigurer&quot; 
      class=&quot;org.springframework.beans.factory.config.PropertyPlaceholderConfigurer&quot;&gt;
    	&lt;property name=&quot;location&quot; value=&quot;/WEB-INF/app.properties&quot; /&gt;
    &lt;/bean&gt;	


I want to inject one of the properties from app.properites into the bean shown above. I can&#39;t simply do something like 

&lt;!-- language: lang-xml --&gt;

    &lt;bean class=&quot;com.example.PersonDaoImpl&quot;&gt;
        &lt;property name=&quot;maxResults&quot; value=&quot;${results.max}&quot;/&gt;
    &lt;/bean&gt;

Because PersonDaoImpl does not feature in the Spring XML file (it is picked up from the classpath via annotations). I&#39;ve got as far as the following:

    @Repository(&quot;personDao&quot;)
    public class PersonDaoImpl extends AbstractDaoImpl implements PersonDao {

        @Resource(name = &quot;propertyConfigurer&quot;)
        protected void setProperties(PropertyPlaceholderConfigurer ppc) {
    	// Now how do I access results.max?	
        }
    }

But it&#39;s not clear to me how I access the property I&#39;m interested in from `ppc`?

  [1]: http://static.springframework.org/spring/docs/2.5.x/api/org/springframework/beans/factory/config/PropertyPlaceholderConfigurer.html

How can I inject a property value into a Spring Bean which was configured using annotations?

Most of the examples quoted for usage of Dependency Injection, we can solve using the factory pattern as well. Looks like when it comes to usage/design the difference between dependency injection and factory is blurred or thin.

Once someone told me that its how you use it that makes a difference! 

I once used [StructureMap][1] a DI container to solve a problem, later on I redesigned it to work with a simple factory and removed references to StructureMap.

Can anyone tell me what is the difference between them and where to use what, whats the best practice here?

  [1]: http://structuremap.sourceforge.net/Default.htm

Dependency Injection vs Factory Pattern

I&#39;ve been reading the articles on MSDN about Unity (Dependency Injection, Inversion of Control), but I think I need it explained in simple terms (or simple examples). I&#39;m familiar with the MVPC pattern (we use it here), but I just can&#39;t really grasp this Unity thing yet, and I think it&#39;s the next step in our application design.

Can someone explain Microsoft Unity?

I am using Microsoft&#39;s Unity for dependency injection and I want to do something like this:  

    IDataContext context = _unityContainer.Resolve&lt;IDataContext&gt;();
    var repositoryA = _unityContainer.Resolve&lt;IRepositoryA&gt;(context); //Same instance of context
    var repositoryB = _unityContainer.Resolve&lt;IRepositoryB&gt;(context); //Same instance of context
    
    IDataContext context2 = _unityContainer.Resolve&lt;IDataContext&gt;(); //New instance
    var repositoryA2 = _unityContainer.Resolve&lt;IRepositoryA&gt;(context2);

`RepositoryA` and `RepositoryB` both have a constructor that takes an `IDataContext` parameter, and I want Unity to initialize the repository with the context that I pass it. Also note that `IDataContext` is not registered with Unity (I don&#39;t want 3 instances of `IDataContext`).

Content Type	Original Author	Original Content on Stackoverflow
Question	CVertex	View Question on Stackoverflow
Solution 1 - .Net	Tom Stickel	View Answer on Stackoverflow
Solution 2 - .Net	Mads Tjørnelund Toustrup	View Answer on Stackoverflow

Why exactly isn't MEF a DI/IoC container?

.Net Problem Overview

.Net Solutions

Solution 1 - .Net

Solution 2 - .Net

Java MessageFormat - How can I insert values between single quotes?

C# little endian or big endian?

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