calling C# console application through command prompt

string Message = Console.ReadLine();
if (Message != "")
{

if (Message == "add")
Add();
if (Message == "deduct")
Deduct();


}

It's work now


thanx a lot

this "ConsoleApplication1 add" just has to work.


a suggest putting a breakpoint or writing the content of that array to the console to check what is actually inside. 

 foreach (var arg in args)
 {
        Console.WriteLine(arg);
 }

ConsoleApplication1 add
ConsoleApplication1/add

ah, remove this if (args.Length == 0) condition.
I had updated my post and you didn't realize it.

static void Main(string[] args)
{



if (args.Length == 0)
{
foreach (var arg in args)
{
if (arg == "add")
Add();
if (arg == "deduct")
Deduct();
}
}
Console.ReadLine();

}
public static int Add()
{

int a;
int b;
int c;

Console.WriteLine("Enter value of 'a':");
a = Convert.ToInt32(Console.ReadLine());

Console.WriteLine("Enter value of 'b':");
b = Convert.ToInt32(Console.ReadLine());


c = a + b;
Console.WriteLine("a + b = {0}", c);
Console.ReadLine();


Console.ReadLine();
return c;

}

public static int Deduct()
{

int a;
int b;
int c;

Console.WriteLine("Enter value of 'a':");
a = Convert.ToInt32(Console.ReadLine());

Console.WriteLine("Enter value of 'b':");
b = Convert.ToInt32(Console.ReadLine());


c = a - b;
Console.WriteLine("a - b = {0}", c);
Console.ReadLine();


Console.ReadLine();
return c;

}

it has to ...

can you paste your code snippet here?

Hello,
       It's not working
 

Hi, not sure I understand as everything is described above.


If you add the above code in your Main method, you can call the Add function from command prompt by typing:

consoleapplication1 add 

Helo Michal
               how can we take input then

Hi,
the main method's arguments represent command prompt arguments

static void Main(string[] args)

so you need to handle input in your main method, something like this:

   foreach (var arg in args)
 {
        if (arg == "add")
        call your add method here;
 }

afterwards, you can call it from command prompt like
 consoleapplication1 add 



More info on MSDN