flags-what are they??

2008-05-01

Question

_{Thursday, May 1, 2008 11:15 AM}

Why do we use a flag in vb.net?

What exactly are they used for?

Thanks

All replies (3)

_{Thursday, May 1, 2008 1:02 PM ✅Answered}

There are some good articles on the web if you do a Google search for "flags in vb.net".

Here's one of them:

http://www.codeguru.com/vb/sample_chapter/article.php/c12963/

good luck

_{Saturday, May 3, 2008 11:45 AM ✅Answered}

carlysarahg wrote:

Why do we use a flag in vb.net?

What exactly are they used for?

Thanks

Hi,

A flag is usually a TRUE or FALSE ( On or Off ) ( zero or one in Binary ).

They can be used to indicate the result of a previous test such as the test of an IF THEN statement

or within a SELECT-CASE-END SELECT block.

You could use a variable to indicate a condition or state of something that has more than two states such as a valve position, OPEN, CLOSED, HALF-WAY-OPEN and so on. Then a computer needs to use 3 or more different BINARY values like

etcetera.

Try this bit of code with one button on a FORM.>>

Code Snippet

Public Class Form1

Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click

Dim myFlag As Boolean

Dim myNumber As Integer = 777

If myNumber = 777 Then

myFlag = True

MessageBox.Show("myNumber = 777")

Else

myFlag = False

MessageBox.Show("myNumber does NOT EQUAL 777")

End If

End Sub

End Class

At the end of the day in a computer all operations work as a result of a flag being TRUE or FALSE.

E.G. Run WINDOWS MEDIA PLAYER ( Yes | No )

If Yes, Play an MP3 file ( Yes | No )

If Yes to Play a FILE AND If No to Play an MP3 file

Play a WMA file instead ( Yes | No )

....etcetera.

It is all based on whether you click on OK | Cancel or whatever you click on.

If myNumber = 777 is evaluated as TRUE or FALSE ( 1 or 0 in binary ) in the above code.

Regards,

John

_{Tuesday, November 20, 2012 4:33 AM}

Help me :)
tag "<>" effective "'(note)" somewhere :)???
Or does it make sense is IsNot Comparison of Operators???

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flags-what are they??

Question

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