Solved

Static C# class members

Posted on 2006-11-30
4
439 Views
Last Modified: 2010-04-16
Hi,

If i create a C# class with a static member as follows:

static private PropertyBag settings;
private PropertyBag settingsLocal;

Does this exist only once for all instances of the class and the settingsLocal exist for each class instatiation?

How do i reference the static member?

the compiler complains as follows when I try to access "this.settings"

Error     8     Static member .......settings' cannot be accessed with an instance reference; qualify it with a type name instead     C:\......PropertiesFileReader.cs     160     8    

0
Comment
Question by:Christopher Schene
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 2
4 Comments
 
LVL 18

Expert Comment

by:DarrenD
ID: 18046587
As far as I know you must call the name of the class

classname.settings



Darren
0
 
LVL 18

Assisted Solution

by:DarrenD
DarrenD earned 150 total points
ID: 18046659
When you use the 'this' keyword you are trying to access an instance of the sessings variable.

This is a static variable and so cannot be accessed via an instance of the class.

To access it outside the class call classname.settings

Also you may have to make it public.
0
 
LVL 44

Accepted Solution

by:
Arthur_Wood earned 250 total points
ID: 18047304
the error message tells you exactly what you did wrong, and how to avoid the error:

"Static member .......settings' cannot be accessed with an instance reference; qualify it with a type name instead"

You cannot use an Instance of the class (an Object created from the class), you use the type name (class name) instead:

in your case, it would be

<className>.settings   whatever your className is

AW
0
 
LVL 7

Assisted Solution

by:mjmarlow
mjmarlow earned 100 total points
ID: 18051059
Given your class has the following declarations:
static private PropertyBag settings;
private PropertyBag settingsLocal;

"settings" is static, but private.  It will not be accessable outside of the class you declare it in.  Define it as
static public PropertyBag settings; to make it available to other classes.   And yes, there is only one copy of "settings" property.

 "settingsLocal"  is and instance  property , and  every instance of your class will have a different "settingsLocal".

0

Featured Post

Free Tool: ZipGrep

ZipGrep is a utility that can list and search zip (.war, .ear, .jar, etc) archives for text patterns, without the need to extract the archive's contents.

One of a set of tools we're offering as a way to say thank you for being a part of the community.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Exception Handling is in the core of any application that is able to dignify its name. In this article, I'll guide you through the process of writing a DRY (Don't Repeat Yourself) Exception Handling mechanism, using Aspect Oriented Programming.
Performance in games development is paramount: every microsecond counts to be able to do everything in less than 33ms (aiming at 16ms). C# foreach statement is one of the worst performance killers, and here I explain why.
This video shows how to use Hyena, from SystemTools Software, to update 100 user accounts from an external text file. View in 1080p for best video quality.
Suggested Courses

734 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question