Subroutines in C#

Question

I'm a bit new to C#, and not quite sure how to call a subroutine. Here's what I'm trying to do:

private void button1_Click(object sender, EventArgs e)
{
    // Call whatever subroutine you like
    StartExstream();
}

public void StartExstream()
{
    // Do Stuff Here
}

Unfortunately for me, this doesn't work. I'm getting a "Only assignment, call, increment, decrement, and new object expressions can be used as a statement" error.

How do I call my StartExstream sub from my Button1_Click event?

Thanks, Jason

EDIT:

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;

namespace WindowsFormsApplication1
{
public partial class Form1 : Form
{
    public Form1()
    {
        InitializeComponent();
    }

    private void button1_Click(object sender, EventArgs e)
    {
        // Call whatever subroutine you like
         StartExstream();
    }



    public void StartExstream()
    {
        tcpExstream.Service1Client MyTCP = new tcpExstream.Service1Client();

        string ExStreamPath;
        string datPath;
        string optPath;

        // My Working Arguments
        ExStreamPath = @"C:\Program Files\Exstream\Dialogue 6.1\Engine.exe";
        datPath = @"-FILEMAP=DataFile,\\Dev-srv1\Exstream\LetterWriterApp\Input Files\Data Files\SAVEezkazivaftf40s452ndayb45.dat";
        optPath = @"-CONTROLFILE=C:\Exstream\Development\LetterWriter\ControlFiles\Letter.opt";

        // Hong's Arguments
        //ExStreamPath = @"C:\Program Files\Exstream\Dialogue 6.1\Engine.exe";
        //datPath = @"-FILEMAP=DataFile,C:\Exstream\development\AGDocGenerator\TempFiles\DataFiles\Data_456231_1598.xml";
        //optPath = @"-CONTROLFILE=C:\Exstream\development\AGDocGenerator\ExstreamDialogue\ControlFiles\AGDocGenerator.opt";

        // Kick It!
        MyTCP.StartExStream(datPath, optPath, ExStreamPath);

        // Extra line of code for breaking point
        optPath = "nothing";
    }
}

}

Answer 1

First

If the Routine is in the same class than there you can directly call the routine by just writing name of it

Example

private void AnotherMethod()
    {
        // Call whatever subroutine you like
         MyRutine();
    }

Second

If its not in the same class you need to create instance of the class which contains routine and than you can use that object to call you routine

Example

MyClass c = new MyClass();
c.MyRutine();

Answer 2

You have to have this all in a namespace and then in a class for this to work.

namespace some.namespace
{
   public class myclass
   {
        private void button1_Click(object sender, EventArgs e)
        {         // Call whatever subroutine you like         
              StartExstream();     
        }
        public void StartExstream()
        {         // Do Stuff Here     
        } 
   }
}