How can I run a terminal command (bash) from C#/Mono?

Question

I've got an asp.net mvc website up and running great on the pi, and I'm even blinking an led - however, I would like to take a picture from the site using the raspberry pi camera board. I am attempting to use the following code:

Process proc = new System.Diagnostics.Process();
proc.StartInfo.FileName = "/bin/bash";
proc.StartInfo.Arguments = "raspistill -o image.jpg";
proc.StartInfo.UseShellExecute = false; 
proc.StartInfo.RedirectStandardOutput = true;
proc.Start();

However, every time I try to do that I get the error

user/bin/raspistill: /usr/bin/raspistill: cannot execute binary file

Does anyone have any idea why this isn't working, or how I can run a bash command from mono/C#?

• lenik: have you tried to run the same command from the terminal? what was the result?
• HeatfanJohn: How are you running asp.net and mono on your Pi? I tried installing mono and xsp2 and xsp4 but couldn't get a simple web page to run.
• Steve French: @lenik - when done from the terminal it works exactly as intended.
• Steve French: @HeatfanJohn - I followed this tutorial exactly and it worked quite well codewithmac.com/2013/05/asp-net-mvc-on-your-raspberry-pi - the key is installing Debian, not Raspian
• HeatfanJohn: Ah, I'm not running soft-float

Answer 1

Update

You need to add the -c option to the argument string for /bin/bash:

 proc.StartInfo.Arguments = "-c raspistill -o image.jpg";

I get the same cannot execute binary file when I try to run /bin/bash /usr/bin/raspistill -? from the command line.

 raspberrypi ~ $ /bin/bash /usr/bin/raspistill -?
 /usr/bin/raspistill: /usr/bin/raspistill: cannot execute binary file

Running /bin/bash -c /usr/bin/raspistill -? works from the command line.

Also, according to this SO article try running /usr/bin/raspistill directly from Process.Start() as shown below:

 Process.Start("/usr/bin/raspistill", "-?");

• Steve French: That's the one! It works perfectly