Visual Basic

detecting if a device is plugged into a port VB6

18-Aug-09 17:48

It may work, but it's not the best solution. Writing stuff to files and folders at the root should be avoided. Corporate policy usually restricts these areas for good reason. The may be a standard folder used for storing Log files that Windows doesn't normally use, or at least a well-known standard folder that should be used. The root of any drive is probably next to the last place you should be storing stuff.

A guide to posting questions on CodeProject[^]

Dave Kreskowiak
Microsoft MVP
Visual Developer - Visual Basic
2006, 2007, 2008
But no longer in 2009...

Re: log4net in vista

Steven J Jowett19-Aug-09 7:33

Steven J Jowett

19-Aug-09 7:33

C#Coudou wrote:
i allow to all user

GULP !!! OMG | :OMG:

Steve Jowett
-------------------------
Real programmers don't comment their code. If it was hard to write, it should be hard to read.

RyJaBy18-Aug-09 7:56

RyJaBy

18-Aug-09 7:56

I was wondering if anyone knew how to determine if you have a device that is hooked up to a port, for instance, COM 3. Let's say the computer goes into standby mode where the power is suspended. While in standby mode you remove the device from COM 3 and put it into COM 4. Is there a way to determine that using visual basic 6? Maybe there is a way to detect when your computer comes out of standby mode. That would help as well.

Thanks,
R

Re: detecting if a device is plugged into a port VB6

Dave Kreskowiak18-Aug-09 8:57

Re: detecting if a device is plugged into a port VB6

18-Aug-09 8:57

RyJaBy wrote:
While in standby mode you remove the device from COM 3 and put it into COM 4. Is there a way to determine that using visual basic 6?

There is no standard method. You would have to test your communication to the device on the last known port it was connected to. If it fails, then you would have to poll all the available COM ports until you found it again, reset everything to a known state, then resume what you were doing. Or, just askl the user which COM port the device is now attached to, reset everything to a known state and resume.

RyJaBy wrote:
Maybe there is a way to detect when your computer comes out of standby mode.

It's possible to do. You would have to get the power notifications[^] by overriding the forms WindowProc. I couldn't tell you how to do it in VB6 because I haven't touched it in the last 8 years. Using VB.NET, it's quite easy.

A guide to posting questions on CodeProject[^]

Dave Kreskowiak
Microsoft MVP
Visual Developer - Visual Basic
2006, 2007, 2008
But no longer in 2009...

0x3c018-Aug-09 10:54

0x3c0

18-Aug-09 10:54

Dave Kreskowiak wrote:
I couldn't tell you how to do it in VB6

It needs a bit of API trickery. There's a link to a message here which contains some example code, if you see past the atrocious formatting

Between the motion
And the act
Falls the Shadow

How can I have a form load and set it as readable = true?

waner michaud18-Aug-09 7:53

waner michaud

18-Aug-09 7:53

Hi,

I want to load a form as readable only..

this form user can do editing on one instance but other instance I want the same form to be readable only.

thanks

Re: How can I have a form load and set it as readable = true?

Dave Kreskowiak18-Aug-09 8:47

18-Aug-09 8:47

You'll have to add code to the form to expose a "ReadOnly" property. You'll also have to provide code to disable all the controls on the form, or if any have a ReadOnly property, enable them. There is no one line of code that will do this for you.

A guide to posting questions on CodeProject[^]

Dave Kreskowiak
Microsoft MVP
Visual Developer - Visual Basic
2006, 2007, 2008
But no longer in 2009...

Encryption

KreativeKai18-Aug-09 7:11

KreativeKai

18-Aug-09 7:11

I'm new to encryption, but have been searching high and low for answers for the past three days. Our bank wants us to FTP our payroll file via PGP. In the past we've used a modem to transfer the file. Years ago we used DOS command files, then VB6 and over five or six years ago I rewrote it in .NET.

I'm trying to basically code a FTP solution which is working fine with the bank. I just need code to encrypt the file in a PGP format prior to uploading.

There are several fine "Simplified Encryption" articles and VB solutions on CodeProject, but none of them really address PGP.

There is a C# wrapper to GNUPG which is accessed using an ASP webservice. I could have my Windows app access a Windows service to pull this webservice wrapper tied to the GNUPG.org windows app. Of course as soon as GNUPG.org puts out a new version my payroll app could break.

Isn't there a simpler way to encrypt the file in PGP format for the bank using .NET?

Any help is appreciated Confused | :confused:

Lost in the vast sea of .NET

Re: Encryption

Dave Kreskowiak18-Aug-09 7:18

18-Aug-09 7:18

None of the .NET Framework versions come with a PGP implementation. You'll have to use a third party library to do this. This[^] article looks promising.

A guide to posting questions on CodeProject[^]

Dave Kreskowiak
Microsoft MVP
Visual Developer - Visual Basic
2006, 2007, 2008
But no longer in 2009...

Re: Encryption

KreativeKai19-Aug-09 3:06

KreativeKai

19-Aug-09 3:06

I was hoping for a .NET Framework solution. I'm currently thinking about switching to SSL / TLS for a secure FTP. It looks like all I have to do is add EnableSSL = True to my ftp class. I'm still researching this, because the PGP solution was not simple at all and this seems way too simple.

Thanks for your answer! You've answered many of my questions over the past many years and it is always appreciated.

Lost in the vast sea of .NET

Re: Encryption

Dave Kreskowiak19-Aug-09 3:46

how to convert capstext in datagridview ?

19-Aug-09 3:46

You're welcome!

A guide to posting questions on CodeProject[^]

Dave Kreskowiak
Microsoft MVP
Visual Developer - Visual Basic
2006, 2007, 2008
But no longer in 2009...

JC.KaNNaN18-Aug-09 2:21

18-Aug-09 2:21

hi friends,

i have entered some text in datagridview.
i need to enter each character will automatically show capslock
in datagridview..
(i mean how to enter capstext in datagridview ?)

Yours,
KaNNaN

-----------------------------------------------------------------
"Success is When Ur Signature Becomes An Autograph"

Mail To : foreverkans@gmail.com

Johan Hakkesteegt18-Aug-09 2:56

Johan Hakkesteegt

18-Aug-09 2:56

I am not making any promises, but you could try this:

Private Sub DataGridView1_CellValueChanged(ByVal sender As Object, ByVal e As System.Windows.Forms.DataGridViewCellEventArgs) Handles DataGridView1.CellValueChanged
        DataGridView1.CurrentCell.Value = DataGridView1.CurrentCell.Value.ToString.ToUpper()
    End Sub

My advice is free, and you may get what you paid for.

JC.KaNNaN18-Aug-09 18:30

18-Aug-09 18:30

ya its working good...thanks

but its working after entered text.i need current instance of capstext.

or

whatever change in grid its show the typed information in label box.
this need also current instance...

Yours,
KaNNaN

-----------------------------------------------------------------
"Success is When Ur Signature Becomes An Autograph"

Mail To : foreverkans@gmail.com

Ashfield18-Aug-09 21:00

Ashfield

18-Aug-09 21:00

So you probably need to trap the keydown event and do it there.

Bob
Ashfield Consultants Ltd
Proud to be a 2009 Code Project MVP

JC.KaNNaN18-Aug-09 21:34

18-Aug-09 21:34

Already i checked, its not working....

Yours,
KaNNaN

-----------------------------------------------------------------
"Success is When Ur Signature Becomes An Autograph"

Mail To : foreverkans@gmail.com

Ashfield18-Aug-09 23:45

Ashfield

18-Aug-09 23:45

It may be the keypress event you want, but its on the key press/down/up event that you need to do your conversion. Try putting code in all the key events for the control and run in debug to see what fires when.

Bob
Ashfield Consultants Ltd
Proud to be a 2009 Code Project MVP

JC.KaNNaN19-Aug-09 2:28

19-Aug-09 2:28

its working on cellvaluechaged event

For x = 0 To MSF1.RowCount - 2
MSF1.Item(2, x).Value = MSF1.Item(2, x).Value.ToString.ToUpper()
lblJobname.Text = MSF1.CurrentCell.Value
Next x

but same problem occur in instance of display entered information.

Yours,
KaNNaN

-----------------------------------------------------------------
"Success is When Ur Signature Becomes An Autograph"

Mail To : foreverkans@gmail.com

Vb.net text box

rrrriiizz17-Aug-09 23:12

rrrriiizz

17-Aug-09 23:12

Hi,
i have wriiten one simple code for value Checking but the code is working for a single digit number for double digit it doesnot work, i dont no why. Please help me reg this. My simple code is

If (txtqty.Text > "2") Then
           btn3.Visible = False
           btn3.Enabled = False
           txtp3.Enabled = False
           txtr3.Enabled = False
       Else
           btn3.Visible = True
           btn3.Enabled = True
           txtp3.Enabled = True
           txtr3.Enabled = True
       End If

Christian Graus17-Aug-09 23:19

Christian Graus

17-Aug-09 23:19

I would suggest you buy a basic VB book and read it. You're doing a string comparison, and you need instead to convert the string to a number.

Christian Graus

Driven to the arms of OSX by Vista.

Read my blog to find out how I've worked around bugs in Microsoft tools and frameworks.

Tom Deketelaere17-Aug-09 23:56

Tom Deketelaere

17-Aug-09 23:56

Since I'm in a good mood:

if isnumeric(txtqty.text) andalso integer.parse(txtqty.text) > 2 then
'do stuff here
else
'do stuff here
end if

should do it

But take CG's advice and go back to reading a book first, this is very basic stuff

Christian Graus18-Aug-09 0:06

Christian Graus

18-Aug-09 0:06

Of course, this code will explode if the user types in anything other than numbers. Smile | :)

Christian Graus

Driven to the arms of OSX by Vista.

Read my blog to find out how I've worked around bugs in Microsoft tools and frameworks.

Tom Deketelaere18-Aug-09 0:12

Tom Deketelaere

18-Aug-09 0:12

Why?

Just tested it and it doesn't

Read the code carefully CG. (tip: 'isnumeric')

And even if it does a nice explosion now and then isn't that bad Poke tongue | ;-P

Christian Graus18-Aug-09 1:27

Christian Graus

18-Aug-09 1:27

Ooops - you are right. *blush*

Christian Graus

Driven to the arms of OSX by Vista.

Read my blog to find out how I've worked around bugs in Microsoft tools and frameworks.