How to get an argument in a console program?

Question

Therefore, I want other users to be able to run my argument sending options. how to do it?

Answer 1

If you have the Main method (which you will have with the command line application), you can access them directly as an args string array parameter.

public static void Main(string[] args) { var arg1 = args[0]; var arg2 = args[1]; } 

If you use another place in your code, you can access the static method Environment.GetCommandLineArgs

 //somewhere in your code var args = Environment.GetCommandLineArgs(); var arg1 = args[0]; var arg2 = args[1]; 

Answer 2

Do you mean args at startup? such as myapp.exe blah blah2 blah3

Make your main method as follows:

 public static void Main(string[] args) { } 

now args is an array of arguments passed to the program. So, in the example example, args[0] == "blah" , args[1] == "blah2" , etc.

Answer 3

The program starts from a method with this signature

 public static void Main(string[] args) 

The args parameter will contain command line arguments, separated by spaces.

Answer 4

While string [] args works just fine, Environment.GetCommandLineArgs is worth mentioning.

Answer 5

You can read command line arguments from Main optional string[] parameter:

 static void Main(string[] args) { if (args.Length >= 1) { string x = args[0]; // etc... } } 

Note that the following declaration is also indicated for the Main method, but then you do not have access to the command line arguments:

 static void Main() { // ... } 

See more details.

Answer 6

This is supported by default, and the arguments will appear in the args array passed to your program.

 public static void Main(string[] args) 

If you say

 App.exe Hello World What Up 

At the command line, you will get an args array as follows:

 [0] = "Hello" [1] = "World" [2] = "What's" [3] = "Up" 

It is up to you to determine which arguments you want, how they will be formatted, etc.

Answer 7

try the following:

http://sourceforge.net/projects/csharpoptparse/

http://www.codeproject.com/KB/recipes/command_line.aspx

they basically allow you to define arguments and parse them in an OO way, rather than having many string comparisons and the like. I used the same for Java and it was great