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global variable

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Join Date: Dec 2009

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cabsjonel

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global variable

Dec 25th, 2009

hi! folks merry christmas and happy new year to all of you
ahhm! i have problem in using the .bas module i mean declaring global varibles from it, I try several times to use the variable that i declared in .bas module but did not work so can you help me.. and give some example program from it

hoping for your kindness

God bless all

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Join Date: Feb 2008

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selvaganapathy selvaganapathy is offline

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Dec 25th, 2009

Hi, Happy Christmas and Happy New Year.

Lets come to the discussion,
Use Public keyword declare a public variable in a module so that all other modules and forms can access it.

Ex:-

 Help with Code Tags 
 VB Syntax (Toggle Plain Text) 
'In a module
   Public sUserName As String
'In a module
   Public sUserName As String

'In a Form (Form1 )
' - Draw a Button (Command Button - cmdSetUser)
' >> Add Form (Form2)
' - Draw a Button (Command Button - cmdShowUser)

 Help with Code Tags 
 VB Syntax (Toggle Plain Text) 
   'In Form1
Option Explicit
 
Private Sub cmdSetUser_Click()
   sUserName = "ABCD"
   Form2.Show
End Sub
   'In Form1
Option Explicit

Private Sub cmdSetUser_Click()
   sUserName = "ABCD"
   Form2.Show
End Sub

 Help with Code Tags 
 VB Syntax (Toggle Plain Text) 
   'In Form2
Option Explicit
 
Private Sub cmdShowUser_Click()
   MsgBox sUserName
End Sub
   'In Form2
Option Explicit

Private Sub cmdShowUser_Click()
   MsgBox sUserName
End Sub

But avoid often using global variables.

Last edited by selvaganapathy; Dec 25th, 2009 at 6:08 am.

Selva

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Join Date: Dec 2009

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cabsjonel

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Dec 25th, 2009

hey! thanks brother ur such a generous person now i know how to use it ahhm! bro why do you say that avoid often using global variable is it cause a lot of memory but thanks anyway,
but bro i have a big problem about my project its a lending system
our teacher give this kind of project and he told us to self study only
and you know i have only 1 week to finish it and i dont know what to do bro can you help me pls

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Join Date: Feb 2008

Posts: 543

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selvaganapathy selvaganapathy is offline

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Dec 25th, 2009

When u use global variable, u may face some problems .
See this site for detail. It is common for all the languages. So dont use it often.

Dont worry about your project.

Just try out your project, if u have any doubt u post it here.
Definitely not only myself, any one can help you .. but try from your side is very important .. Do well.

Selva