C＃中的命令行命令

Question

I want to run a few Windows programs from C#. How would I do this? From what I've been looking up, it has something to do with System.Diagnostics.Process 's start method

Would I just do using

System.Diagnostics.Process;

and then type

start("Command to be executed");

or am I looking at this problem incorrectly?

New to C#.

Answer 1

Based on your comments it seems that you are unfamiliar with object-oriented programming namespaces and classes. Let's break it down.

Process is a class, part of the .NET framework. Process has has a collection of methods, some of them being static methods. Start is one of those static methods. There are two pieces necessary in order for you to use Process.Start :

1. The compiler needs to know what Process is. You can give that info to the compiler by adding using System.Diagnostics; to the top of your class file. This tells the compiler to look for classes in the System.Diagnostics namespace, which is where Process lives.
2. You need to explicitly tell the compiler that you're calling a method named Start that is part of the process class . You can do this by using Process.Start() . Or in your case, Process.Start("Command to be executed");

There are two reasons why you CANNOT just type start("Command to be executed") :

1. start , with a lowercase "s", is not the same as Start with an uppercase "S". C# is a case-sensitive language.
2. If you don't prepend your method call with a particular class name, the compiler looks in your own class for that method, and when it doesn't find one, it tells you about it.

Answer 2

The thing is: essentially the "Command to be executed" part is what you would type in the command prompt. For example:

Process.Start("C:\Programs\programFile.exe",
              "/arg1='This is an argument' -arg2=anotherArgument someOtherArgument");

The entry point of your program (which file is located at "C:\\Programs\\programFile.exe") would receive the following argument list in its main method:

args[0] = "/arg1='This is an argument'"
args[1] = "-arg2=anotherArgument"
args[2] = "someOtherArgument"

This way of passing parameters as a command line is obviously not the greatest to format, but it does the job all the time.

Answer 3

// Start Internet Explorer. Defaults to the home page.
Process.Start("IExplore.exe");

// Display the contents of the favorites folder in the browser.
Process.Start(myFavoritesPath);

From MSDN