项目中的全局变量。 [英] Global variables in a project.

问题描述

如何在项目中创建一个可供所有

类/表单访问的类实例？我已经有了一个启动模块，我想是把它放在那里，然后通过那里访问它。


我需要像db连接这样的东西，安全经理，一般数据库

功能，.....


任何帮助将不胜感激.....


UJ。

How do I create an instance of a class that is accessible to all
classes/forms in my project? I already have a startup module and I was
thinking putting stuff in there and then accessing it through there.

I need it for things like db connections, security manager, general db
functions, .....

Any help would be appreciated.....

UJ.

推荐答案

您可以创建一个使用Singleton模式的类。

类似于.. 。


公共类DBCentral


私有_theInstance为DBCentral


公共只读共享属性TheInstance（ ）作为DBCentral

get（）

如果_theInstance什么都没有那么

_theInstance = new DBCentral（）

end如果

返回_theInstance

结束获得

结束财产


结束班


我没有检查确切的语法，但你得到了图片....


-

鲍勃鲍威尔[ MVP]

Visual C＃， System.Drawing


在Windows窗体中查找优秀的Windows窗体文章提示和技巧
http://www.bobpowell.net/tipstricks.htm

用GDI + FAQ回答那些GDI +问题
http://www.bobpowell.net/faqmain.htm


所有新文章都提供C＃和VB.NET中的代码。

订阅所提供的RSS提要，绝不会错过任何新文章。

" UJ" < [e-mail]>在消息中写道

新闻：O9 ************** @ TK2MSFTNGP12.phx.gbl ...

You can create a class that uses the Singleton Pattern.
Something like...

public class DBCentral

private _theInstance as DBCentral

public readonly shared property TheInstance() as DBCentral
get()
if _theInstance is nothing then
_theInstance=new DBCentral()
end if
return _theInstance
end get
end property

end class

I didn''t check the exact syntax but you get the picture....

--
Bob Powell [MVP]
Visual C#, System.Drawing

Find great Windows Forms articles in Windows Forms Tips and Tricks
http://www.bobpowell.net/tipstricks.htm

Answer those GDI+ questions with the GDI+ FAQ
http://www.bobpowell.net/faqmain.htm

All new articles provide code in C# and VB.NET.
Subscribe to the RSS feeds provided and never miss a new article.

"UJ" <[e-mail]> wrote in message
news:O9**************@TK2MSFTNGP12.phx.gbl...

如何创建一个我的项目中所有类/表单都可以访问的类的实例？我已经有了一个启动模块，我正在考虑把东西放在那里，然后通过那里访问它。

我需要它用于数据库连接，安全管理器，通用数据库
功能，.....

任何帮助将不胜感激.....

UJ。

How do I create an instance of a class that is accessible to all
classes/forms in my project? I already have a startup module and I was
thinking putting stuff in there and then accessing it through there.

I need it for things like db connections, security manager, general db
functions, .....

Any help would be appreciated.....

UJ.

http://msdn.microsoft.com/architecture


chanmm


" UJ" < [e-mail]>在消息中写道

新闻：O9 ************** @ TK2MSFTNGP12.phx.gbl ...

http://msdn.microsoft.com/architecture

chanmm

"UJ" <[e-mail]> wrote in message
news:O9**************@TK2MSFTNGP12.phx.gbl...

如何创建一个我的项目中所有类/表单都可以访问的类的实例？我已经有了一个启动模块，我正在考虑把东西放在那里，然后通过那里访问它。

我需要它用于数据库连接，安全管理器，通用数据库
功能，.....

任何帮助将不胜感激.....

UJ。

How do I create an instance of a class that is accessible to all
classes/forms in my project? I already have a startup module and I was
thinking putting stuff in there and then accessing it through there.

I need it for things like db connections, security manager, general db
functions, .....

Any help would be appreciated.....

UJ.

Chanmm，


你能指出我正确的方向吗？这是一般架构

页面。我没有看到全局的特定内容。


UJ。


" chanmmn" < CH ***** @ hotmail.com>在消息中写道

news：Og ************** @ TK2MSFTNGP12.phx.gbl ...

Chanmm,

Can you point me in the correct direction? This is a general architecture
page. I don''t see anything specific to globals.

UJ.

"chanmmn" <ch*****@hotmail.com> wrote in message
news:Og**************@TK2MSFTNGP12.phx.gbl...

http://msdn.microsoft.com/architecture

chanmm
UJ < [e-mail]>在消息中写道
新闻：O9 ************** @ TK2MSFTNGP12.phx.gbl ...

http://msdn.microsoft.com/architecture

chanmm

"UJ" <[e-mail]> wrote in message
news:O9**************@TK2MSFTNGP12.phx.gbl...

如何创建类的实例我的项目中的所有类/表格都可以访问？我已经有了一个启动模块，我正在考虑把东西放在那里，然后通过那里访问它。

我需要它用于数据库连接，安全管理器，通用数据库
功能，.....

任何帮助将不胜感激.....

UJ。

How do I create an instance of a class that is accessible to all
classes/forms in my project? I already have a startup module and I was
thinking putting stuff in there and then accessing it through there.

I need it for things like db connections, security manager, general db
functions, .....

Any help would be appreciated.....

UJ.

这篇关于项目中的全局变量。的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！