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 :cool:

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.