how to use a variable in all file

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VS2008

Hi guys, I want to ask, how to declare a global variable. For examples, now I have 2 file .cs, form1.cs and aa.cs.

In file aa.cs, I have create a struct like this

C#

public struct pxlYUV{
            public int y;
            public int u;
            public int v;
        }

public static pxlYUV[] dePixelYUV = new pxlYUV[76800];

and in form1.cs, I want to call variable dePixelYUV. How can I get that variable?
I have tried wrote

public static pxlYUV[] dePixelYUV = new pxlYUV[7680];
dePixelYUV = aa.dePixelYUV;

in form1.cs, but it also not working

thanks for your response

Posted 26-Jul-11 2:49am

Member 7955849

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Sergey Alexandrovich Kryukov · Accepted Answer · 2011-07-26T21:12:00

Files do not matter in C#, visibility and scope do; the scope of name spaces and types define the scope; access modifiers define access to the types/members from different scope.

Now, there is no a concept of "global" variables. The whole idea of global is not good. Using static members can be acceptable in simple projects, but they are hard to maintain correctly in big and complex project.

The really robust concept is the singleton pattern, see http://en.wikipedia.org/wiki/Singleton_pattern[^].

A good sample of singleton implementation for C# is shown here: http://csharpindepth.com/Articles/General/Singleton.aspx[^].

—SA

Wjousts · Accepted Answer · 2011-07-26T03:02:00

Solution 1

Your static variable dePixelYUV must be declared in a class that you are not showing us. Given that, you should be able to access it with:

classname.dePixelYUV

Where classname is the name of the actual class that dePixelYUV lives in.

Posted 26-Jul-11 3:02am

Wjousts

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Member 7955849 26-Jul-11 9:43am

sorry no write it down before, but I have declare my static variable on both of files.