[Process.Start][1].

Note that advanced uses (printing etc) require using a [ProcessStartInfo][2] and setting the [Verb][3] property.


  [1]: http://msdn.microsoft.com/en-us/library/system.diagnostics.process.start.aspx
  [2]: http://msdn.microsoft.com/en-us/library/system.diagnostics.processstartinfo_properties.aspx
  [3]: http://msdn.microsoft.com/en-us/library/system.diagnostics.processstartinfo.verb.aspx

    System.Diagnostics.Process.Start(command)

I bet you had trouble finding it because it is in the System.Diagnostics namespace.  &quot;Diagnostics&quot;?  Usually with 20 years experience one thing you get good at is guessing at what something will be called in a new API/language, but this one tricked me.



Did you try System.Diagnostics.Process.Start() function... It&#39;s more or less similar to ShellExecute. You can open exes, documents. I haven&#39;t checked printing yet, Marc has told you how already.

    System.Diagnostics.Process.Start(&quot;explorer.exe&quot;, path);

Is there a substitute in emacs for the vi &quot;gf&quot; command?
meaning try to open the file which is under the cursor right now
if a real file name is in fact there.

Thanks

goto-file in Emacs

I am starting to learn the [Clojure][1] programming language. Are there any recommendations for Clojure editors/IDEs on Mac OS X?

**Update 2009-09-23**: The Clojure space has changed tremendously since I originally posted this question. Many of the links below, especially those that refer to clojure-mode with Emacs, are out-of-date. The best Clojure IDE I found was the [Enclojure][2] Netbeans plugin which was recently released (2009-08-25).

**Update 2010-04-30**: Another very good article on this subject is *[Clojure IDEs - The Grand Tour][3]* by Lau B. Jensen. Also, for my own clojure development, I have actually moved to Emacs / [swank-clojure][4].

  [1]: http://en.wikipedia.org/wiki/Clojure
  [2]: http://www.enclojure.org/
  [3]: http://www.bestinclass.dk/index.php/2010/03/clojure-ides-the-grand-tour-getting-started/
  [4]: http://github.com/technomancy/swank-clojure


Clojure editor/IDE recommendations on Mac OS X

I&#39;m looking for the .NET-preferred way of performing the same type of thing that ShellExecute does in Win32 (opening, printing, etc. for arbitrary file types).

I&#39;ve been programming Windows for over 20 years, but I&#39;m a complete newbie at .NET, so maybe I&#39;m just looking in the wrong places. I&#39;m currently using .NET 2.0 (VS C# 2005), but could use VS 2008 if need be.

If the only answer is to use P/Invoke, then I might be better just writing my small utility using Win32 anyway.

ShellExecute equivalent in .NET

I'm looking for the .NET-preferred way of performing the same type of thing that ShellExecute does in Win32 (opening, printing, etc. for arbitrary file types).
I've been programming Windows for over 20 years, but I'm a complete newbie at .NET, so maybe I'm just looking in the wrong places. I'm currently using .NET 2.0 (VS C# 2005), but could use VS 2008 if need be.
If the only answer is to use P/Invoke, then I might be better just writing my small utility using Win32 anyway.

My WinForms app uses a number of [BackgroundWorker][1] objects to retrieve information from a database. I&#39;m using BackgroundWorker because it allows the UI to remain unblocked during long-running database queries and it simplifies the threading model for me.

I&#39;m getting occasional DatabaseExceptions in some of these background threads, and I have witnessed at least one of these exceptions in a worker thread while debugging.  I&#39;m fairly confident these exceptions are timeouts which I suppose its reasonable to expect from time to time.

My question is about what happens when an unhandled exception occurs in one of these background worker threads.

I don&#39;t think I can catch an exception in another thread, but can I expect my WorkerCompleted method to be executed?  Is there any property or method of the BackgroundWorker I can interrogate for exceptions?


  [1]: http://msdn.microsoft.com/en-us/library/system.componentmodel.backgroundworker.aspx

Unhandled exceptions in BackgroundWorker

I need to be able to compare some month names I have in an array.

It would be nice if there were some direct way like:

    Month.toInt(&quot;January&quot;) &gt; Month.toInt(&quot;May&quot;)

My Google searching seems to suggest the only way is to write your own method, but this seems like a common enough problem that I would think it would have been already implemented in .Net, anyone done this before?

How to parse a month name (string) to an integer for comparison in C#?

Why was C# designed this way?

As I understand it, an interface only describes behaviour, and serves the purpose of describing a contractual obligation for classes implementing the interface that certain behaviour is implemented.

If classes wish to implement that behavour in a shared method, why shouldn&#39;t they?

Here is an example of what I have in mind:

    // These items will be displayed in a list on the screen.
    public interface IListItem {
      string ScreenName();
      ...
    }

    public class Animal: IListItem {
        // All animals will be called &quot;Animal&quot;.
        public static string ScreenName() {
            return &quot;Animal&quot;;
        }
    ....
    }

    public class Person: IListItem {

        private string name;

        // All persons will be called by their individual names.
        public string ScreenName() {
            return name;
        }
        
        ....

     }

Why Doesn&#39;t C# Allow Static Methods to Implement an Interface?

What exception should I throw if I encounter an illegal state - for instance, an initialization method that should only be called once being called a second time?  I don&#39;t really see any built-in exception that makes sense.  This seems like something that should be in the framework - am I not poking in the right spot?

Is there a built in .NET exception that indicates an illegal object state?

Is it possible to define an implicit conversion of enums in c#?

something that could achieve this?

    public enum MyEnum
    {
        one = 1, two = 2
    }

    MyEnum number = MyEnum.one;
    long i = number;

If not, why not?

Can we define implicit conversions of enums in c#?

Is there a way for me to serialize an object in .NET without the XML Namespaces automatically serializing also?  It seems that by default .NET believes the XSI and XSD namespaces should be included, but I don&#39;t want them there.

How to serialize an object to XML without getting xmlns=&quot;...&quot;?

Which method is preferred?

    Session.Remove(&quot;foo&quot;);
    
    Session[&quot;foo&quot;] = null;

Is there a difference?

ASP.NET removing an item from Session?

When I get a reference to a `System.Diagnostics.Process`, how can I know if a process is currently running?

How can I know if a process is running?

Is there an easy way to test whether your named pipe is working correctly? I want to make sure that the data I&#39;m sending from my app is actually being sent. Is there a quick and easy way to get a list of all the named pipes?

How can I get a list of all open named pipes in Windows?

I have written a Windows service that allows me to remotely run and stop applications. These applications are run using CreateProcess, and this works for me because most of them only perform backend processing. Recently, I need to run applications that present GUI to the current log in user. How do I code in C++ to allow my service to locate the currently active desktop and run the GUI on it?

How can a Windows service execute a GUI application?

A friend of mine downloaded some malware from Facebook, and I&#39;m curious to see what it does without infecting myself. I know that you can&#39;t really decompile an .exe, but can I at least view it in Assembly or attach a debugger? 

Edit to say it is not a .NET executable, no CLI header.

Is it possible to &quot;decompile&quot; a Windows .exe? Or at least view the Assembly?

When connecting to a network share for which the current user (in my case, a network enabled service user) has no rights, name and password have to be provided.

I know how to do this with Win32 functions (the `WNet*` family from `mpr.dll`), but would like to do it with .Net (2.0) functionality.

What options are available?

**Maybe some more information helps:**

  - The use case is a windows service, not an Asp.Net application.
  - The service is running under an account which has no rights on the share.
  - The user account needed for the share is not known on the client side.
  - Client and server are not members of the same domain.

How to provide user name and password when connecting to a network share

I&#39;m learning about Win32 programming, and the `WinMain` prototype looks like:

    int WINAPI WinMain ( HINSTANCE instance, HINSTANCE prev_instance, PSTR cmd_line, int cmd_show )

I was confused as to what this `WINAPI` identifier was for and found:

    #define WINAPI      __stdcall

What does this do?  I&#39;m confused by this having something at all after a return type.  What is `__stdcall` for?  What does it mean when there is something between the return type and function name?

   


What is __stdcall?

Windows explorer has the ability to show thumbnails of files. These thumbnails are provided by core and third-party shell extensions.

I know how to extend the shell to provide thumbnails to Windows.

What I want to do is retrieve the thumbnail image from any file on the system via the shell using C#. Is this possible?

Essentially, I&#39;m writing a custom file browser and I want to show thumbnails, and can&#39;t possibly parse every file on the planet to make my own thumbnails.

Clarification:
Many answers seem to be centered around web page thumbnails, or scaling an image. But that&#39;s not at all what I&#39;m looking for. What I want is to ask Windows for the thumbnail representation of these file types: .DOC, .PDF, .3DM, .DWG... and mabye about a dozen more. I don&#39;t want to parse, render, and make thumbnails myself, because Windows already knows how.

The code I posted as an answer actually works... maybe it can be simplified and cleaned up a bit.

C# get thumbnail from file via windows api

At this point, everyone knows that there&#39;s a limit to the number of `ShellIconOverlayIdentifiers` (from MSDN):

&gt;The number of different icon overlay handlers that the system can support is limited by the amount of space available for icon overlays in the system image list. There are currently fifteen slots allotted for icon overlays, some of which are reserved by the system. For this reason, icon overlay handlers should be implemented only if there are no satisfactory alternatives

I can understand the 15 overlay limt in Windows 95. But in an environment where there&#39;s Gigs of RAM, numerous Cores, and GPUs, is there some technical reason for such a low number in a modern operating system?

And why isn&#39;t this value configurable?

_Before giving the &#39;performance&#39; answer, consider:_
Windows allows for configuration such that you can kill performance... why pick on this issue specifically?

ShellIconOverlayIdentifiers - why so few?

I&#39;m on Windows 7 trying to use a batch file to open the GitBash shell and make a git call.
This is the contents of my batch file:

    REM Open GitBash 
    C:\Windows\SysWOW64\cmd.exe /c &quot;&quot;C:\Program Files (x86)\Git\bin\sh.exe&quot; --login -i&quot;
    REM retrieve archive
    git archive master | tar -x -C %~1
    REM quit GitBash
    exit

I noticed that the GitBash is logging out before the next command &quot;git archive...&quot;. Does anybody know if I can pass the command into GitBash and how?

Mike

How do I write a batch file which opens the GitBash shell and runs a command in the shell?

I&#39;m looking to execute a shell command in Go and get the resulting output as a string in my program. I saw the [Rosetta Code][1] version:

    package main
    import &quot;fmt&quot;
    import &quot;exec&quot;
     
    func main() {
      cmd, err := exec.Run(&quot;/bin/ls&quot;, []string{&quot;/bin/ls&quot;}, []string{}, &quot;&quot;, exec.DevNull, exec.PassThrough, exec.PassThrough)
      if (err != nil) {
        fmt.Println(err)
        return
      }
      cmd.Close()

But this doesn&#39;t capture the actual standard out or err in a way that I can programatically access - those still print out to the regular stdout / stderr. I saw that using Pipe as the out or err could help elsewhere, but no example of how to do so. Any ideas?


  [1]: http://rosettacode.org/wiki/Execute_a_system_command#Go

Exec a shell command in Go

I need to invoke a ant script via shell script. Let us consider the parameters for ant script are a,b,c. how can i pass the parameter for those variables? I must provide the parameters for ant vis invoke the shell script. can anyone help me on this?

How to Pass parameters for a Ant script , which is invoked via shell script?

Is it possible to read the following from the local variable in Lua?

    local t = os.execute(&quot;echo &#39;test&#39;&quot;)
    print(t)

I just want to achieve this: whenever `os.execute` returns any value, I would like to use it in Lua - for example `echo &#39;test&#39;` will output `test` in the bash command line - is that possible to get the returned value (`test` in this case) to the Lua local variable?



Lua os.execute return value

Can I know what are the differences between each `Exec`, `ExecWait`, `ExecShell`, `nsExec::Exec`, `nsExec::ExecToLog,` `nsExec::ExecToStack`, `ExecDos` and `ExecCmd`, as in when to use which?

I &#39;ve posted the various execute calls I know. I am trying to make a comprehensive list, so that it helps future visitors..

1. `Exec`: Plainly execute the called string, be it some application, console or file.

2. `ExecWait`: Executes like `Exec` but waits till the process exits.

3. `ExecShell`: **What is it for?**

4. `nsExec::Exec`: Just like `Exec` or `ExecWait` but only for command prompt and that too without opening the console window. I am unsure if it waits for process to exit. **Does `nsExec::Exec` wait for child process to exit?**

5. `nsExec::ExecToLog`: `The documentation says ExecToLog` is similar to plain `nsExec` but it outputs to log window. **What does that mean, what is a log window?**

6. `nsExec::ExecToStack`: The documentation says `ExecToStack` is similar to plain `nsExec` but it pushes output to stack. I get that.

7. `ExecDos`: Same as `nsExec::ExecToStack` but it additionally (**Is it not**?)

 a. takes string parameter that serves as stdin for running application.

 b. works in both sync/async mode.

 c. it works out of section - for .onInit check outs.

8. `ExecCmd`: Same as `ExecDos` but it doesn&#39;t require these


        ExpandEnvStrings $3 %COMSPEC% 
        ExecDos::exec  /C 


 parts. **Am I correct?**

Exec vs ExecWait vs ExecShell vs nsExec::Exec vs nsExec::ExecToLog vs nsExec::ExecToStack vs ExecDos vs ExeCmd

I have a **batch file** that does a bunch of things and at the end needs to **open up a web browser** to a page. Is there a way to, in essence, call `ShellExecute` on a **http** to open the web page?

Windows Command Prompt



Content Type	Original Author	Original Content on Stackoverflow
Question	Martin Kenny	View Question on Stackoverflow
Solution 1 - C#	Marc Gravell	View Answer on Stackoverflow
Solution 2 - C#	Corey Trager	View Answer on Stackoverflow
Solution 3 - C#	Cyril Gupta	View Answer on Stackoverflow
Solution 4 - C#	mdimai666	View Answer on Stackoverflow

ShellExecute equivalent in .NET

C# Problem Overview

C# Solutions

Solution 1 - C#

Solution 2 - C#

Solution 3 - C#

Solution 4 - C#

Clojure editor/IDE recommendations on Mac OS X

goto-file in Emacs

Attributions