How to get command line parameters / file path

Question

I am developing an application, and accurate by parameters/commands next to the file path.

For example, these flags:

C:/caminho_do_arquivo -r 

C:/caminho_do_arquivo -v

And in the code there would be regions that would identify this command, for example.

switch url;
case r:

case v:

But I don’t know any function that identifies such parameters. How do I get them?

Answer 1

It has two forms. One with parameter no Main():

void Main(string[] args) {
    foreach(var arg in args) {
        switch(arg) {
            case "-r":
            //faz algo aqui
            case "-v":
            //faz algo aqui
        }
    }
}

And if you can’t do Main() nor pass on what you receive from him to another method, you can use Environment.GetCommandLineArgs:

void Main() {
    var args = Environment.GetCommandLineArgs();
    foreach(var arg in args) {
        switch(arg) {
            case "-r":
            //faz algo aqui
            case "-v":
            //faz algo aqui
        }
    }
}

I put in the Github for future reference.

At least it is this in a simplified way. Of course it is necessary to validate the received data better. Depending on what it will take, if it is something other than flags may need a more complex logic. If you are sure you will only have one flag, can simplify by removing the loop from the foreach. But remember that this is a user input, can come anything crazy.

There are some more powerful ready alternatives:

• Ndesk.Options - Very powerful and flexible
• Mono.Options - You can use in . NET, just include in your project.
• Command Line Parser Library - Another complete well
• You could list an immeasurable amount of options available from various libraries and public software. Here’s a tip to look for a ready one if you have a specific need. There’s a good chance someone has already done it.