Newbie Question

[dreber]

I am wrtining my first c# app that will monitor a perticular file location to do things.

When I build the project I get :

An object reference is required for the nonstatic field, method, or property 'JobMonitor.StartUp.watcher' at:

watcher.Star ch();


Here is the code:

using System;
using System.Windows.Forms;


namespace JobMonitor
{
/// <summary>
/// Summary description for Main.
/// </summary>
public class StartUp
{
FileWatch watcher = new FileWatch();
static void Main()
{
watcher.Star ch(); // <-- error at this point
Application.Run(new frmFortestingonly());
}


}
}


using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;
using System.IO;

namespace JobMonitor
{
/// <summary>
/// Summary description for FileWatch.
/// </summary>
public class FileWatch
{
FileSystemWatcher watcher = new FileSystemWatcher();
public FileWatch()
{
}

public void Star ch()
{


watcher.Path = "D:\\";

watcher.NotifyFilter = NotifyFilters.FileName | NotifyFilters.Attributes
| NotifyFilters.LastAccess | NotifyFilters.LastWrite |
NotifyFilters.Security | NotifyFilters.Size;


watcher.Changed += new FileSystemEventHandler(OnFileEvent);
watcher.Created += new FileSystemEventHandler(OnFileEvent);

watcher.EnableRaisingEvents = true;
}
//-----------------------------------------------------------------------
public void OnFileEvent(object source, FileSystemEventArgs fsea)
{
DateTime dt = new DateTime();
dt = System.DateTime.UtcNow;
MessageBox.Show("",dt.ToLocalTime() + " " + fsea.ChangeType.ToString() + " " + fsea.FullPath) ;

}
//----------------------------------------------------------------------
public void OnRenameEvent(Object source, RenamedEventArgs rea)
{
DateTime dt = new DateTime();
dt = System.DateTime.UtcNow;
MessageBox.Show("",dt.ToLocalTime() + " " + rea.ChangeType.ToString() + rea.OldFullPath+ " to " +" " + rea.FullPath);
}
//------------------------------------------------------------------

}
}


Any help would be great.

Thanks

 

[dreber]

Hmmm, "Star ch();" is being displayed as "Star ch();". I am not sure why.

 

[dreber]

I am not sure what is happing. I have a function named (each letter is spelled out) "S t a r t W a t c h()" but the newsgroup is displaying Star ch().

 

[PlausiblyDamp]

Look at the missing letters - could be a profanity filter on the board

 

[dynamic_sysop]

it certainly looks like profanity cuz it's got a t as well as the wat bit
used to get that on irc with s c u n t h o r p e ( and thats only a town in the uk :-\ ) lol

 

[PlausiblyDamp]

Only noticed it 'cos it's one of my favorite swear words - handy in all situations

 

[_SBradley_]

'watcher' is an instance member of your StartUp class. However, you are trying to reference it from Main(), which is a static method. Since a static method does not have an implicit 'this' reference, you cannot reference instance members, only static members.

You have three choices:

1. Declare and initialize 'watcher' inside your Main() method, instead of making it a member.

2. Make 'watcher' a static member of your StartUp class (just declare it "static FileWatch watcher").

3. Create an instance of class StartUp and use that, as in "new StartUp().watcher.StartWàtch()".

 

[dreber]

Thanks for you help _SBradley_. I guess that I need to read some more.