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How to: Display Command Line Arguments (C# Programming Guide) 

Arguments provided to an executable on the command-line are accessible through an optional parameter to Main. The arguments are provided in the form of an array of strings. Each element of the array contains one argument. White-space between arguments is removed. For example, consider these command-line invocations of a fictitious executable:

Input on Command-line Array of strings passed to Main

executable.exe a b c

"a"

"b"

"c"

executable.exe one two

"one"

"two"

executable.exe “one two” three

"one two"

"three"

Example

This example displays the command line arguments passed to a command-line application. The output shown is for the first entry in the table above.

class CommandLine
{
    static void Main(string[] args)
    {
        // The Length property provides the number of array elements
        System.Console.WriteLine("parameter count = {0}", args.Length);

        for (int i = 0; i < args.Length; i++)
        {
            System.Console.WriteLine("Arg[{0}] = [{1}]", i, args[i]);
        }
    }
}

Output

parameter count = 3
Arg[0] = [a]
Arg[1] = [b]
Arg[2] = [c]

See Also

Tasks

How to: Access Command-Line Arguments Using foreach (C# Programming Guide)

Reference

Main() and Command Line Arguments (C# Programming Guide)
Main() Return Values (C# Programming Guide)

Concepts

C# Programming Guide