C# extern int ? How do I make a global var across classes and namespaces ?

Posted by dr d b karron on Stack Overflow See other posts from Stack Overflow or by dr d b karron
Published on 2011-01-03T13:46:50Z Indexed on 2011/01/03 13:53 UTC
Read the original article Hit count: 233

Filed under:

c#-4.0

|

extern

Dear C#'ers; As an old C/C++ programmer, I want to keep a global int counter across all of MY namespaces and classes.

Public static extern int EventCount;

Is not working; the VS2010 compiler won't let me have an extern int. Even with a DLLImport.

    [DllImport ( "SilverlightApplication37.dll" )]
    public static extern int EventCount;

VS2010 complains

Error 1 The modifier 'extern' is not valid for this item

so how do i have a global int across all my code ?

Cheers!

dr.K

© Stack Overflow or respective owner

Related posts about c#-4.0

.NET WebRequest.PreAuthenticate not quite what it sounds like

as seen on West-Wind - Search for 'West-Wind'
I’ve run into the problem a few times now: How to pre-authenticate .NET WebRequest calls doing an HTTP call to the server – essentially send authentication credentials on the very first request instead of waiting for a server challenge first? At first glance this sound like it should be easy:… >>> More
HttpWebRequest and Ignoring SSL Certificate Errors

as seen on West-Wind - Search for 'West-Wind'
Man I can't believe this. I'm still mucking around with OFX servers and it drives me absolutely crazy how some these servers are just so unbelievably misconfigured. I've recently hit three different 3 major brokerages which fail HTTP validation with bad or corrupt certificates at least according to… >>> More
The dynamic Type in C# Simplifies COM Member Access from Visual FoxPro

as seen on West-Wind - Search for 'West-Wind'
I’ve written quite a bit about Visual FoxPro interoperating with .NET in the past both for ASP.NET interacting with Visual FoxPro COM objects as well as Visual FoxPro calling into .NET code via COM Interop. COM Interop with Visual FoxPro has a number of problems but one of them at least got a lot… >>> More
Dynamic Type to do away with Reflection

as seen on West-Wind - Search for 'West-Wind'
The dynamic type in C# 4.0 is a welcome addition to the language. One thing I’ve been doing a lot with it is to remove explicit Reflection code that’s often necessary when you ‘dynamically’ need to walk and object hierarchy. In the past I’ve had a number of ReflectionUtils that used string based expressions… >>> More
Finding a Relative Path in .NET

as seen on West-Wind - Search for 'West-Wind'
Here’s a nice and simple path utility that I’ve needed in a number of applications: I need to find a relative path based on a base path. So if I’m working in a folder called c:\temp\templates\ and I want to find a relative path for c:\temp\templates\subdir\test.txt I want to receive back subdir\test… >>> More

Related posts about extern

How does an "extern C" declaration work?

as seen on Stack Overflow - Search for 'Stack Overflow'
I'm taking a programming languages course and we're talking about the "extern C" declaration. How does this declaration work at a deeper level other than "it interfaces C and C++"? How does this affect the bindings that take place in the program as well? >>> More
extern "C" has no effect in msvc++ 9.0

as seen on Stack Overflow - Search for 'Stack Overflow'
I manage project for JNI for both compilers: MSVC++ 8.0 and 9.0, my cpp file contains following implementation: extern "C" { JNIEXPORT jlong JNICALL Java_context_ServiceProviderContext_StartServiceProvider (JNIEnv * env, jclass, jstring jspath){ ..... } With help of depends.exe… >>> More
Problem with extern keyword in C++

as seen on Stack Overflow - Search for 'Stack Overflow'
What's the difference between the following two declarations? I thought they were equivalent, but the first sample works, and the second does not. I mean it compiles and runs, but the bitmap display code shows blank. I have not stepped through it yet, but am I missing something obvious? GUI_BITMAP… >>> More
How does extern work in c++?

as seen on Stack Overflow - Search for 'Stack Overflow'
This is from the <iostream>: namespace std { extern istream cin; ///< Linked to standard input extern ostream cout; ... It seems by using extern the data types defined in other namespaces will just be available? >>> More
The extern alias 'xxx' was not specified in a /reference option

as seen on Stack Overflow - Search for 'Stack Overflow'
I have two assemblies that unfortunately define the same type in the same namespace. I'm trying to use a an extern alias to work around the problem. In the Visual Studio IDE I have set the "Aliases" property of the reference to my alias. This is supposed to change the C# compiler command line to… >>> More