MonoDevelop from: http://monodevelop.com/

There is no equivalent to Visual Studio. However, for writing C# on Mac or Linux, you can&#39;t get better than MonoDevelop.

The Mac build is pre beta. [From the MonoDevelop site on Mac][1]:

&gt; The Mac OS X port of MonoDevelop is under active development and has not seen a stable release yet. Recent work described by Michael Hutchinson has focussed on improving the usability and stability of Monodevelop on the Mac. This work will be released in MonoDevelop 2.2. Right now it&#39;s not finished, and is very much an alpha.


  [1]: http://monodevelop.com/Download/Mac_Preview

The question is quite old so I feel like I need to give a more up to date response to this question.

Based on MonoDevelop, the best IDE for building C# applications on the Mac, for pretty much any platform is http://xamarin.com/

Whilst more of a workaround, if you&#39;re running an Intel Mac, you could go the virtualisation route - at least then you can run the same tools.

Coming from someone who has tried a number of &quot;C# IDEs&quot; on the Mac, your best bet is to install a virtual desktop with Windows and Visual Studio. It really is the best development IDE out there for .NET, nothing even comes close.

On a related note: I hate XCode.

--------

**Update:** Use Xamarin Studio. It&#39;s solid.

codeblocks.It seems to be good

http://www.codeblocks.org/

I&#39;m pretty new to Java, need to write a program that listen to video conversion instructions and convert the video once an new instruction arrives (instructions is stored in Amazon SQS, but it&#39;s irrelevant to my question)

I&#39;m facing a choice, either use Java RunTime to exec &#39;ffmpeg&#39; conversion (like from command line), or I can use a ffmpeg wrapper written inJava http://fmj-sf.net/ffmpeg-java/getting_started.php

I&#39;d much prefer using Java Runtime to exec ffmpeg directly, and avoid using java-ffmpeg wrapper as I have to learn the library. so my question is are there any benefits using java-ffmpeg wrapper over exec ffmpeg directly using Runtime? I don&#39;t need ffmpeg to play videos, just convert videos

Thanks

use java-ffmpeg wrapper, or simply use java runtime to execute ffmpeg?

I was checking the behavior of dynamic_cast and found that when it fails, std::bad_cast exception is thrown only if the destination is a reference type. If the destination is a pointer type then no exception is thrown from the cast. This is my sample code:
	

    class A
    {
    	public:
    		virtual ~A()
    		{
    		}
    };
    
    class B : public A
    {
    };
    
    int  main()
    {
        A* p = new A;
        
        //Using reference
        try
        {
    	B&amp; b = dynamic_cast&lt;B&amp;&gt;(*p);
        }
        catch(std::bad_cast exp)
        {
    	std::cout&lt;&lt;&quot;Caught bad cast\n&quot;;
        }
        
        //Using pointer
          try
        {
    	B* pB = dynamic_cast&lt;B*&gt;(p);
    	
    	if( pB == NULL)
    	{
    		std::cout&lt;&lt;&quot;NULL Pointer\n&quot;;
    	}
        }
        catch(std::bad_cast exp)
        {
    	std::cout&lt;&lt;&quot;Caught bad cast\n&quot;;
        }
        
        return 0;
    }

Output is &quot;Caught bad cast&quot; and &quot;NULL pointer&quot;. Code is compiled using VS2008. Is this the correct behavior ? If yes, then why there is a difference?

Difference in behavior while using dynamic_cast with reference and pointers

I&#39;m using my Mac most time at work. At home there&#39;s my Windows computer, where I program with Visual Studio my .NET/C# stuff.

**Because I want to program outside, it would be great to have an equivalent IDE for my Mac.**

**Which software are the best solution in my case to have a similar workplace with the same functionality?**

I prefer open source, but commercial software is okay too. 

Best equivalent VisualStudio IDE for Mac to program .NET/C#

I'm using my Mac most time at work. At home there's my Windows computer, where I program with Visual Studio my .NET/C# stuff.
Because I want to program outside, it would be great to have an equivalent IDE for my Mac.
Which software are the best solution in my case to have a similar workplace with the same functionality?
I prefer open source, but commercial software is okay too.

Can someone tell me how to get the handle of a Windows console application in C#? In a Windows Forms application, I would normally try `this.Handle`.

How do I get the handle of a console application&#39;s window

In much of the code I have seen (on SO, thecodeproject.com and I tend to do this in my own code), I have seen public properties being created for every single private field that a class contains, even if they are the most basic type of `get; set;` like:

    private int myInt;
    public int MyInt 
    {
         get { return myInt; }
         set { myInt = value }
    }

My question is: how does this differ from:

    public int MyInt;

and if we should use properties instead of public fields why should we use them in this specific case? (I am not talking about more complex examples where the getters and setters actually do something special or there is only one get or set (read/write only) rather than just returning/setting a value of a private field). It does not seem to add any extra encapsulation, only give a nice icon in IntelliSense and be placed in a special section in class diagrams!

Should I use public properties and private fields or public fields for data?

Can you mix vb and c# files in the same project for a class library? Is there some setting that makes it possible?

I tried and none of the intellisense works quite right, although the background compiler seems to handle it well enough (aside from the fact that I, then, had 2 classes in the same namespace with the same name and it didn&#39;t complain).  

We&#39;re trying to convert from VB to C# but **haven&#39;t** finished converting all the code.  I have some new code I need to write, but didn&#39;t really want to make a new project just for it.

Mixing C# &amp; VB In The Same Project

&gt; **Possible Duplicate:**  
&gt; https://stackoverflow.com/questions/858080/nullable-types-and-the-ternary-operator-why-wont-this-work


Why doesn&#39;t this work? Seems like valid code.

      string cert = ddCovCert.SelectedValue;
      int? x = (string.IsNullOrEmpty(cert)) ? null: int.Parse(cert);
      Display(x);

How should I code this? The method takes a Nullable&lt;int&gt;. If the drop down has a string selected I need to parse that into an int otherwise I want to pass null to the method.


C# code won&#39;t compile. No implicit conversion between null and int

Let&#39;s say I have a string such as:

    &quot;Hello     how are   you           doing?&quot;

I would like a function that turns multiple spaces into one space.

So I would get:

    &quot;Hello how are you doing?&quot;

I know I could use regex or call 

    string s = &quot;Hello     how are   you           doing?&quot;.replace(&quot;  &quot;,&quot; &quot;);

But I would have to call it multiple times to make sure all sequential whitespaces are replaced with only one.

Is there already a built in method for this?


How to replace multiple white spaces with one white space

I&#39;ve installed ELMAH 1.1 .Net 3.5 x64 in my ASP.NET project and now I&#39;m getting this error (whenever I try to see any page):

&gt;  Could not load file or assembly
&gt; &#39;System.Data.SQLite, Version=1.0.61.0,
&gt; Culture=neutral,
&gt; PublicKeyToken=db937bc2d44ff139&#39; or
&gt; one of its dependencies. An attempt
&gt; was made to load a program with an
&gt; incorrect format.
&gt; 
&gt; Description: An
&gt; unhandled exception occurred during
&gt; the execution of the current web
&gt; request. Please review the stack trace
&gt; for more information about the error
&gt; and where it originated in the code.
&gt; 
&gt; Exception Details:
&gt; System.BadImageFormatException: Could
&gt; not load file or assembly
&gt; &#39;System.Data.SQLite, Version=1.0.61.0,
&gt; Culture=neutral,
&gt; PublicKeyToken=db937bc2d44ff139&#39; or
&gt; one of its dependencies. An attempt
&gt; was made to load a program with an
&gt; incorrect format.

More error details at the bottom.

My Active Solution platform is &quot;Any CPU&quot; and I&#39;m running on a x64 Windows 7 on an x64, of course, processor. The reason why we are using this version of ELMAH is because 1.0 .Net 3.5 (x86, which is the only platform for which it&#39;s compiled) gave us this same error on our x64 Windows server.

I&#39;ve tried compiling for x86 and x64 and I get the same error. I&#39;ve tried removing the all compiler output (bin and obj). Finally I&#39;ve made a reference to the SQLite dll directly, something that was not needed for the project to work on the server and I&#39;ve got this compiler error:

&gt; Error	1 Warning as Error: Assembly generation -- Referenced assembly &#39;System.Data.SQLite.dll&#39; targets a different processor MyProject

Any ideas what the problem might be?

More error details:

&gt; Source Error:
&gt; 
&gt; An unhandled exception was generated
&gt; during the execution of the current
&gt; web request. Information regarding the
&gt; origin and location of the exception
&gt; can be identified using the exception
&gt; stack trace below.
&gt; 
&gt; Stack Trace:
&gt; 
&gt; [BadImageFormatException: Could not
&gt; load file or assembly
&gt; &#39;System.Data.SQLite, Version=1.0.61.0,
&gt; Culture=neutral,
&gt; PublicKeyToken=db937bc2d44ff139&#39; or
&gt; one of its dependencies. An attempt
&gt; was made to load a program with an
&gt; incorrect format.]   
&gt; System.Reflection.Assembly._nLoad(AssemblyName
&gt; fileName, String codeBase, Evidence
&gt; assemblySecurity, Assembly
&gt; locationHint, StackCrawlMark&amp;
&gt; stackMark, Boolean
&gt; throwOnFileNotFound, Boolean
&gt; forIntrospection) +0   
&gt; System.Reflection.Assembly.nLoad(AssemblyName
&gt; fileName, String codeBase, Evidence
&gt; assemblySecurity, Assembly
&gt; locationHint, StackCrawlMark&amp;
&gt; stackMark, Boolean
&gt; throwOnFileNotFound, Boolean
&gt; forIntrospection) +43   
&gt; System.Reflection.Assembly.InternalLoad(AssemblyName
&gt; assemblyRef, Evidence
&gt; assemblySecurity, StackCrawlMark&amp;
&gt; stackMark, Boolean forIntrospection)
&gt; +127    System.Reflection.Assembly.InternalLoad(String
&gt; assemblyString, Evidence
&gt; assemblySecurity, StackCrawlMark&amp;
&gt; stackMark, Boolean forIntrospection)
&gt; +142    System.Reflection.Assembly.Load(String
&gt; assemblyString) +28   
&gt; System.Web.Configuration.CompilationSection.LoadAssemblyHelper(String
&gt; assemblyName, Boolean starDirective)
&gt; +46
&gt; 
&gt; [ConfigurationErrorsException: Could
&gt; not load file or assembly
&gt; &#39;System.Data.SQLite, Version=1.0.61.0,
&gt; Culture=neutral,
&gt; PublicKeyToken=db937bc2d44ff139&#39; or
&gt; one of its dependencies. An attempt
&gt; was made to load a program with an
&gt; incorrect format.]   
&gt; System.Web.Configuration.CompilationSection.LoadAssemblyHelper(String
&gt; assemblyName, Boolean starDirective)
&gt; +613    System.Web.Configuration.CompilationSection.LoadAllAssembliesFromAppDomainBinDirectory()
&gt; +203    System.Web.Configuration.CompilationSection.LoadAssembly(AssemblyInfo
&gt; ai) +105   
&gt; System.Web.Compilation.BuildManager.GetReferencedAssemblies(CompilationSection
&gt; compConfig) +178   
&gt; System.Web.Compilation.BuildProvidersCompiler..ctor(VirtualPath
&gt; configPath, Boolean
&gt; supportLocalization, String
&gt; outputAssemblyName) +54   
&gt; System.Web.Compilation.ApplicationBuildProvider.GetGlobalAsaxBuildResult(Boolean
&gt; isPrecompiledApp) +232   
&gt; System.Web.Compilation.BuildManager.CompileGlobalAsax()
&gt; +52    System.Web.Compilation.BuildManager.EnsureTopLevelFilesCompiled()
&gt; +337
&gt; 
&gt; [HttpException (0x80004005): Could not
&gt; load file or assembly
&gt; &#39;System.Data.SQLite, Version=1.0.61.0,
&gt; Culture=neutral,
&gt; PublicKeyToken=db937bc2d44ff139&#39; or
&gt; one of its dependencies. An attempt
&gt; was made to load a program with an
&gt; incorrect format.]   
&gt; System.Web.Compilation.BuildManager.ReportTopLevelCompilationException()
&gt; +58    System.Web.Compilation.BuildManager.EnsureTopLevelFilesCompiled()
&gt; +512    System.Web.Hosting.HostingEnvironment.Initialize(ApplicationManager
&gt; appManager, IApplicationHost appHost,
&gt; IConfigMapPathFactory
&gt; configMapPathFactory,
&gt; HostingEnvironmentParameters
&gt; hostingParameters) +729
&gt; 
&gt; [HttpException (0x80004005): Could not
&gt; load file or assembly
&gt; &#39;System.Data.SQLite, Version=1.0.61.0,
&gt; Culture=neutral,
&gt; PublicKeyToken=db937bc2d44ff139&#39; or
&gt; one of its dependencies. An attempt
&gt; was made to load a program with an
&gt; incorrect format.]   
&gt; System.Web.HttpRuntime.FirstRequestInit(HttpContext
&gt; context) +8896783   
&gt; System.Web.HttpRuntime.EnsureFirstRequestInit(HttpContext
&gt; context) +85   
&gt; System.Web.HttpRuntime.ProcessRequestInternal(HttpWorkerRequest
&gt; wr) +259



Could not load file or assembly &#39;System.Data.SQLite&#39;

In my .NET 2.0 application, I need to check if sufficient permissions exist to create and write to files to a directory. To this end, I have the following function that attempts to create a file and write a single byte to it, deleting itself afterwards to test that permissions do exist.

I figured the best way to check was to actually try and do it, catching any exceptions that occur. I&#39;m not particularly happy about the general Exception catch though, so is there a better or perhaps a more accepted way of doing this?


    private const string TEMP_FILE = &quot;\\tempFile.tmp&quot;;
    
    /// &lt;summary&gt;
    /// Checks the ability to create and write to a file in the supplied directory.
    /// &lt;/summary&gt;
    /// &lt;param name=&quot;directory&quot;&gt;String representing the directory path to check.&lt;/param&gt;
    /// &lt;returns&gt;True if successful; otherwise false.&lt;/returns&gt;
    private static bool CheckDirectoryAccess(string directory)
    {
        bool success = false;
        string fullPath = directory + TEMP_FILE;
    
        if (Directory.Exists(directory))
        {
            try
            {
                using (FileStream fs = new FileStream(fullPath, FileMode.CreateNew, 
                                                                FileAccess.Write))
                {
                    fs.WriteByte(0xff);
                }
    
                if (File.Exists(fullPath))
                {
                    File.Delete(fullPath);
                    success = true;
                }
            }
            catch (Exception)
            {
                success = false;
            }
        }

Checking for directory and file write permissions in .NET

Can I pass a method with an out parameter as a Func?

    public IList&lt;Foo&gt; FindForBar(string bar, out int count) { }

    // somewhere else
    public IList&lt;T&gt; Find(Func&lt;string, int, List&lt;T&gt;&gt; listFunction) { }

Func needs a type so out won&#39;t compile there, and calling listFunction requires an int and won&#39;t allow an out in.

Is there a way to do this?

Func&lt;T&gt; with out parameter

I&#39;m not sure when I should use `ContentPresenter` instead of `ContentControl` (and vice-versa). At the moment, I&#39;m using `ContentControl` pretty much all the time in my `DataTemplate`s. When would `ContentPresenter` be a better choice? and why?


What&#39;s the difference between ContentControl and ContentPresenter?

What is the easiest way to activate PHP and MySQL on Mac OS 10.6 (Snow Leopard), 10.7 (Lion), 10.8 (Mountain Lion)?

I&#39;d prefer to use any bundled versions before resorting to downloading from the PHP or MySQL websites. That also rules out MAMP and similar.

I&#39;m comfortable at the command line in Terminal.

Easiest way to activate PHP and MySQL on Mac OS 10.6 (Snow Leopard), 10.7 (Lion), 10.8 (Mountain Lion)?

I&#39;m looking for a guide or sample code for writing Mac OS X Finder plugins?  It would like to know how to do some simple actions:

1. adding image overlayers to icons
2. adding context menu items
3. listen to file changes

I found the following two resources:

- [Writing Contextual Menu Plugins for OS X](http://www.mactech.com/articles/mactech/Vol.18/18.08/MenuPlugins/index.html): An outdated document from 2002 that uses the `COM` API targeting Mac OS X 8/9.
- [SCPlugin](http://scplugin.tigris.org/): Open-source SVN Mac application that includes a Finder plug-in.

I am tempted to review the `SCPlugin` code, but was hoping to find an easier sample to digest.

How to Write OS X Finder plugin

I&#39;m trying to get a list of **all** users and all groups on Mac OS X 10.5+.  How can I do this?

For example, the list of all users on my machine should return: 
`_amavisd, _appowner, _appserver, _ard, _atsserver, _calendar, _carddav, _clamav, _coreaudiod, _cvmsroot, _cvs, _cyrus, _devdocs, _dovecot, _eppc, _installer, _jabber, _lda, _locationd, _lp, _mailman, _mcxalr, _mdnsresponder, _mysql, _pcastagent, _pcastserver, _postfix, _qtss, _sandbox, _screensaver, _securityagent, _serialnumberd, _softwareupdate, _spotlight, _sshd, _svn, _teamsserver, _timezone, _tokend, _trustevaluationagent, _unknown, _update_sharing, _usbmuxd, _uucp, _windowserver, _www, _xgridagent, _xgridcontroller, daemon, dave, nobody, root` (that was painstakingly compiled manually).

How can I get that list (and the corresponding list of all groups) programmatically?  I&#39;m open to alternative (non-c based) solutions, such as Applescript, commandline, etc.

---

**Update a long time later**

[TALlama&#39;s answer](https://stackoverflow.com/a/1308064/115730) prompted me to investigate the API to Open Directory, and I found that this list can be easily acquired programmatically:

    #import &lt;OpenDirectory/OpenDirectory.h&gt;
    ODSession *s = [ODSession defaultSession];
    ODNode *root = [ODNode nodeWithSession:s name:@&quot;/Local/Default&quot; error:nil];
    ODQuery *q = [ODQuery queryWithNode:root forRecordTypes:kODRecordTypeUsers attribute:nil matchType:0 queryValues:nil returnAttributes:nil maximumResults:0 error:nil];
    
    NSArray *results = [q resultsAllowingPartial:NO error:nil];
    for (ODRecord *r in results) {
        NSLog(@&quot;%@&quot;, [r recordName]);
    }

That will log the usernames of every user on the system.  Substituting in `kODRecordTypeGroups` will get you the list of all the groups.

The `-[ODQuery resultsAllowingPartial:error:]` method is a *blocking* call, so you&#39;d either want to execute this code on a background thread, or use an `&lt;ODQueryDelegate&gt;` to aggregate the results.

List of all users and groups

I want to launch an app on OSX from a script. I need to pass some `command line arguments`. Unfortunately, `open` doesn&#39;t accept command line args.

The only option I can think of is to use `nohup myApp &gt; /dev/null &amp;` to launch my app so it can exist independently of the script that launches it.

Any better suggestions?

How to launch an app on OS X with command line - The best way

Many Java applications that use shell scripts to configure their environment use the `JAVA_HOME` environment variable to start the correct version of Java, locate JRE JARs, and so on.

In macOS X 10.6, the following paths seem to be valid for this variable

    /Library/Java/Home
    /System/Library/Frameworks/JavaVM.framework/Home
    /System/Library/Frameworks/JavaVM.framework/Versions/Current

Some of these are symlinks to the actual current VM (as defined in the Java Preference pane). 

But which one should be used—or is it okay to use any of them?

What should I set JAVA_HOME environment variable on macOS X 10.6?

In eclipse you can click &lt;kbd&gt;Ctrl&lt;/kbd&gt;+&lt;kbd&gt;I&lt;/kbd&gt; at any line, and it&#39;ll automatically indent the line or group of lines according to the indentation scheme you chose in the settings.

I&#39;m really missing this feature in Netbeans. Is there any equivalent feature?

I&#39;m aware of &lt;kbd&gt;Alt&lt;/kbd&gt;+&lt;kbd&gt;Shift&lt;/kbd&gt;+&lt;kbd&gt;F&lt;/kbd&gt; but it&#39;s not good enough. I want to indent a group of lines, and not all the file.

How do I autoindent in Netbeans?

Are there any decent `bash` plug-ins for Eclipse?  My only requirement is syntax highlighting.  I&#39;ve googled about but did not see anything that looked like *&quot;the&quot;* `bash` plug-in.  

Bash script plugin for Eclipse?

So I&#39;m starting like Python a bit, but I&#39;m having trouble erm...running it. Lol

I&#39;m using IDLE for now, but its no use whatsoever because you can only run a couple of lines at a time.

I&#39;m also using Komodo Edit to create the actual .py files.

My question is, how can I run the .py files to test out the actual program? 

I&#39;m using Windows 7, and Komodo Edit 5 as my IDE. Pressing F5 in Komodo doesn&#39;t do anythin at all.

![alt text][1]


  [1]: http://imgur.com/x8DJK.png

How do I run a Python program?

I usually:

1. Choose the needed file.
2. Open it in a tab(t character, by default).

But how I can jump back to NERDTree to open one more file in a tab?

Temporary solution I use now in my .vimrc file:

    map &lt;F10&gt; :NERDTree /path/to/root/of/my/project

But it&#39;s not very useful to start navigation again and again from the root directory.

How to jump back to NERDTree from file in tab?

When a compile fails in VB.NET in Visual Studio 2008, an Error List pops up at the bottom of the screen. To jump to an error, I double click on an error in the error list.

Is there a shortcut to automatically jump to the next error in the list? It gets a little bit tedious at times having to reach down and double click a list that I like to keep collapsed.



Content Type	Original Author	Original Content on Stackoverflow
Question	ChrisBenyamin	View Question on Stackoverflow
Solution 1 - C#	grenade	View Answer on Stackoverflow
Solution 2 - C#	smnbss	View Answer on Stackoverflow
Solution 3 - C#	John Parker	View Answer on Stackoverflow
Solution 4 - C#	Nathan Taylor	View Answer on Stackoverflow
Solution 5 - C#	MrMr	View Answer on Stackoverflow

Best equivalent VisualStudio IDE for Mac to program .NET/C#

C# Problem Overview

C# Solutions

Solution 1 - C#

Solution 2 - C#

Solution 3 - C#

Solution 4 - C#

Solution 5 - C#

Difference in behavior while using dynamic_cast with reference and pointers

use java-ffmpeg wrapper, or simply use java runtime to execute ffmpeg?

Attributions