**UPDATE: Anyone reading this question with R#5.0 and above should note that [this is now a feature][1]:**

ReSharper -&gt; Refactor -&gt; Adjust Namespaces...


  [1]: http://www.jetbrains.com/resharper/webhelp/Refactorings__Adjust_Namespaces.html

This isn&#39;t quite what you want to do ... but hopefully it&#39;s helpful.

Go to the class view, and rename the namespace using Ctrl+R,R. It will update that namespace in all the files/folders that it&#39;s used in. As long as your namespaces are consistant, it should acheive the same result as changing all the namespaces in a folder.

If your namespaces aren&#39;t consistant, and you&#39;re just tidying up then I&#39;m afraid you&#39;ve got a lot of clicking in front of you (or behind you as you&#39;ve probably already done this).

I think that R# doesn&#39;t have this function.
You can use CTRL-SHIFT-H to find&amp;replace the string.

In the following WPF XAML the ScrollViewer does not work (it displays a scroll bar but you cannot scroll and the contents go off the window to the bottom).

I can change the outer StackPanel to a Grid and it will work.

However, in my application from which I reproduced the following code, I need to have an outer StackPanel. **What do I have to do to the StackPanel to make the ScrollViewer show a  usable scrollbar?** e.g. VerticalAlignment=&quot;Stretch&quot; Height=&quot;Auto&quot; don&#39;t work.  



     &lt;StackPanel&gt;
            &lt;ScrollViewer&gt;
                &lt;StackPanel&gt;
                    &lt;TextBlock Text=&quot;This is a test&quot;/&gt;
                    &lt;TextBlock Text=&quot;This is a test&quot;/&gt;
                    &lt;TextBlock Text=&quot;This is a test&quot;/&gt;
                    &lt;TextBlock Text=&quot;This is a test&quot;/&gt;
                    &lt;TextBlock Text=&quot;This is a test&quot;/&gt;
                    &lt;TextBlock Text=&quot;This is a test&quot;/&gt;
                    &lt;TextBlock Text=&quot;This is a test&quot;/&gt;
                    &lt;TextBlock Text=&quot;This is a test&quot;/&gt;
                    &lt;TextBlock Text=&quot;This is a test&quot;/&gt;
                    &lt;TextBlock Text=&quot;This is a test&quot;/&gt;
                    &lt;TextBlock Text=&quot;This is a test&quot;/&gt;
                    &lt;TextBlock Text=&quot;This is a test&quot;/&gt;
                    &lt;TextBlock Text=&quot;This is a test&quot;/&gt;
                    &lt;TextBlock Text=&quot;This is a test&quot;/&gt;
                    &lt;TextBlock Text=&quot;This is a test&quot;/&gt;
                    &lt;TextBlock Text=&quot;This is a test&quot;/&gt;
                    &lt;TextBlock Text=&quot;This is a test&quot;/&gt;
                    &lt;TextBlock Text=&quot;This is a test&quot;/&gt;
                    &lt;TextBlock Text=&quot;This is a test&quot;/&gt;
                    &lt;TextBlock Text=&quot;This is a test&quot;/&gt;
                    &lt;TextBlock Text=&quot;This is a test&quot;/&gt;
                    &lt;TextBlock Text=&quot;This is a test&quot;/&gt;
                    &lt;TextBlock Text=&quot;This is a test&quot;/&gt;
                    &lt;TextBlock Text=&quot;This is a test&quot;/&gt;
                    &lt;TextBlock Text=&quot;This is a test&quot;/&gt;
                    &lt;TextBlock Text=&quot;This is a test&quot;/&gt;
                    &lt;TextBlock Text=&quot;This is a test&quot;/&gt;
                &lt;/StackPanel&gt;
            &lt;/ScrollViewer&gt;
     &lt;/StackPanel&gt;
  



How can I get ScrollViewer to work inside a StackPanel?

In a old site, I was changing the way that CustomErrors works by adding `redirectMode=&quot;ResponseRewrite&quot;` (new in 3.5 SP1):

    &lt;customErrors mode=&quot;RemoteOnly&quot; defaultRedirect=&quot;Error.aspx&quot; redirectMode=&quot;ResponseRewrite&quot;&gt;
        &lt;error statusCode=&quot;404&quot; redirect=&quot;404.aspx&quot; /&gt;
    &lt;/customErrors&gt; 

The thing is: it shows me the generic error page (the one that you get when you don&#39;t set `customErrors`.  If I remove the`redirectMode=&quot;ResponseRewrite&quot;` part, it works fine.

I&#39;m sure 3.5 SP1 is installed in the server, because I use the same setting on other sites hosted in the same server.

Any ideas?

CustomErrors does not work when setting redirectMode=&quot;ResponseRewrite&quot;

I have been doing some refactoring and reorganization and I have moved a bunch of files around.

I want to update each file so it has the &quot;correct&quot; namespace according to its new location. With ReSharper, I can go into each file and it shows me that the namespaces is incorrect but that way I have to do it each file at a time.

Is there anyway to update namespaces across every file in a folder or a project?

Fastest way to update namespaces with ReSharper?

I have been doing some refactoring and reorganization and I have moved a bunch of files around.
I want to update each file so it has the "correct" namespace according to its new location. With ReSharper, I can go into each file and it shows me that the namespaces is incorrect but that way I have to do it each file at a time.
Is there anyway to update namespaces across every file in a folder or a project?

Using C#, is there a better way to handle multiple types of exceptions rather than a bunch of ugly catch blocks?

What is considered best practice for this type of situation?

For example:

    try
    {
        // Many types of exceptions can be thrown
    }
    catch (CustomException ce)
    {
        ...
    }
    catch (AnotherCustomException ace)
    {
        ...
    }
    catch (Exception ex)
    {
        ...
    }



More Elegant Exception Handling Than Multiple Catch Blocks?

In an interview a while ago for a .NET position the interviewer asked me &quot;what would you use a private interface for?&quot;.

I asked him did he mean the difference between implicit vs explicit interface implementation to which he answered no.

So I&#39;m wondering:

 1. What he meant?
 2. What you would use a private interface for?

What is a private interface?

We are having a WPF application where parts of it may throw exceptions at runtime. I&#39;d like to globally catch any unhandled exception and log them, but otherwise continue program execution as if nothing happened (kinda like VB&#39;s `On Error Resume Next`).

Is this possible in C#? And if so, where exactly would I need to put the exception handling code?

Currently I can&#39;t see any single point where I could wrap a `try`/`catch` around and which would catch all exceptions that could occur. And even then I would have left whatever has been executed because of the catch. Or am I thinking in horribly wrong directions here?

**ETA:** Because many people below pointed it out: The application is not for controlling nuclear power plants. If it crashes it&#39;s not that much a big deal but random exceptions that are mostly UI-related are a nuisance in the context where it would be used. There were (and probably still are) a few of those and since it uses a plugin architecture and may be extended by others (also students in that case; so *no* experienced developers that are able to write completely error-free code).

As for the exceptions that get caught: I do log them to a log file, including the complete stack trace. That was the whole point of that exercise. Just to counter those people  that were taking my analogy to VB&#39;s OERN too literally.

I know that blindly ignoring certain classes of errors is dangerous and might corrupt my application instance. As said before, this program isn&#39;t mission-critical for anyone. No-one in their right mind would bet the survival of the human civilization on it. It&#39;s simply a little tool for testing certain design approaches wrt. software engineering.

For the immediate use of the application there are not many things that can happen on an exception:

- No exception handling – error dialog and application exit. Experiment has to be repeated, though likely with another subject. No errors have been logged, which is unfortunate.
- Generic exception handling – benign error trapped, no harm done. This should be the common case judged from all errors we were seeing during development. Ignoring this kind of errors should have no immediate consequences; the core data structures are tested well enough that they will easily survive this.
- Generic exception handling – serious error trapped, possibly crash at a later point. This may happen rarely. We&#39;ve never seen it so far. The error is logged anyway and a crash might be inevitable. So this is conceptually similar to the very first case. Except that we have a stack trace. And in the majority of cases the user won&#39;t even notice.

As for the experiment data generated by the program: A serious error would at worst just cause no data to be recorded. Subtle changes that change the result of the experiment ever so slightly are pretty unlikely. And even in that case, if the results seem dubious the error was logged; one can still throw away that data point if it&#39;s a total outlier.

To summarize: Yes, I consider myself still at least partially sane and I don&#39;t consider a global exception handling routine which leaves the program running to be necessarily totally evil. As said twice before, such a decision might be valid, depending on the application. In this case it was judged a valid decision and not total and utter bullshit. **For any other application that decision might look different.** But please don&#39;t accuse me or the other people who worked on that project to potentially blow up the world just because we&#39;re ignoring errors.

Side note: There is exactly one user for that application. It&#39;s not something like Windows or Office that gets used by millions where the cost of having exceptions bubble to the user at all would be very different in the first place already.

Globally catch exceptions in a WPF application?

Would you write xml-doc for a namespace? And if yes, how and where?

I would think, if it is possible, maybe an almost empty file like this:

    /// &lt;summary&gt;
    /// This namespace contains stuff
    /// &lt;/summary&gt;
    namespace Some.Namespace
    {

    }

But will that work? Since you... &quot;declare&quot;, or at least use the namespace in all the other files as well... and what would happen if you wrote an xml-documentation thing somewhere else on the same namespace? Would one be gone? Or would they be merged somehow?

XML-documentation for a namespace

I understand lambdas and the `Func` and `Action` delegates. But expressions 
stump me. 

In what circumstances would you use an `Expression&lt;Func&lt;T&gt;&gt;` rather than a plain old `Func&lt;T&gt;`?

Why would you use Expression&lt;Func&lt;T&gt;&gt; rather than Func&lt;T&gt;?

I like to put my using directives inside the current namespace, and not outside as VS and Resharper per default puts them.

 Does anyone know of a macro/standard functionality that sorts/removes unused using directives and puts them *inside* the current namespace?

Visual Studio or Resharper functionality for placement of using directives

I&#39;ve been trying out ReSharper and decided that I&#39;d like to uninstall it.  However, after doing so, Visual Studio no longer shows red underline highlighting that it normally uses to identify the location of errors in the code.

This has happened on two of our PCs so far. I&#39;ve tried a reinstall and a repair, but no luck. Any ideas how I can restore the highlighting in Visual Studio?


ReSharper uninstall - Visual Studio no longer shows correct error highlighting

I was wondering if there is a way to copy ALL my settings from ReSharper (including the StyleCop for ReSharper settings and the keyboard bindings I have set for ReSharper) from one PC to another?

Transfer all ReSharper Settings between PCs

Is there any way to indicate to ReSharper that a null reference won&#39;t occur because of Design-by-Contract Requires checking?  For example, the following code will raise the warning (`Possible &#39;null&#39; assignment to entity marked with &#39;NotNull&#39; attribute`) in ReSharper on lines 7 and 8:


    private Dictionary&lt;string, string&gt; _Lookup = new Dictionary&lt;string, string&gt;();

    public void Foo(string s)
    {
        Contract.Requires(!String.IsNullOrEmpty(s));
        
        if (_Lookup.ContainsKey(s))
            _Lookup.Remove(s);
    }

What is really odd is that if you remove the `Contract.Requires(...)` line, the ReSharper message goes away. 

**Update**

I found the solution through ExternalAnnotations which was also mentioned by Mike below.  Here&#39;s an example of how to do it for a function in Microsoft.Contracts:

* Create a directory called `Microsoft.Contracts` under the `ExternalAnnotations` ReSharper directory.
* Next, Create a file called `Microsoft.Contracts.xml` and populate like so:

&lt;xml&gt;

    &lt;assembly name=&quot;Microsoft.Contracts&quot;&gt;
        &lt;member name=&quot;M:System.Diagnostics.Contracts.Contract.Requires(System.Boolean)&quot;&gt;
            &lt;attribute ctor=&quot;M:JetBrains.Annotations.AssertionMethodAttribute.#ctor&quot;/&gt;
            &lt;parameter name=&quot;condition&quot;&gt;
                &lt;attribute ctor=&quot;M:JetBrains.Annotations.AssertionConditionAttribute.#ctor(JetBrains.Annotations.AssertionConditionType)&quot;&gt;
                    &lt;argument&gt;0&lt;/argument&gt;
                &lt;/attribute&gt;
            &lt;/parameter&gt;
        &lt;/member&gt;
    &lt;/assembly&gt;
&lt;/xml&gt;

* Restart Visual Studio, and the message goes away!

ReSharper - Possible Null Assignment when using Microsoft.Contracts

I use the java IDE IntelliJ IDEA and one of the features I like is that there&#39;s no saving.  Everything&#39;s always saved and you just use history navigation.  I tend to have both editors open and I&#39;m always forgetting to save in VS.

I&#39;m running vs 2008 with resharper 4.5 but as far as I can tell this isn&#39;t achievable or configurable.
Any suggestions?

Content Type	Original Author	Original Content on Stackoverflow
Question	leora	View Question on Stackoverflow
Solution 1 - C#	Iain Holder	View Answer on Stackoverflow
Solution 2 - C#	Mark Worth	View Answer on Stackoverflow
Solution 3 - C#	ema	View Answer on Stackoverflow

Fastest way to update namespaces with ReSharper?

C# Problem Overview

C# Solutions

Solution 1 - C#

Solution 2 - C#

Solution 3 - C#

CustomErrors does not work when setting redirectMode="ResponseRewrite"

How can I get ScrollViewer to work inside a StackPanel?

Attributions