Re: Get DriveLetter - Visual Basic Discussion Boards

Re: How do i get the datatype size of a column or an attribute from a database...

Abhijith Rao24-Mar-07 3:34

Abhijith Rao

24-Mar-07 3:34

i am waiting for u r valuable solutions please help....

Abhijith

Network Camera

Brad Fackrell22-Mar-07 5:42

Brad Fackrell

22-Mar-07 5:42

Does anybody know anything about writing code to function with network cameras? I’m trying to find a solution for monitoring my children and I would like to write an application that will detect motion and sound from a network camera.[^] When motion or sound is detected I would like the application to become active with the view that detected the sound or motion.

This is just a concept right now. I haven’t even purchased the camera yet. I’m just wondering if it is possible or worth the effort.

I appreciate any input including positive or negative experiences with this.

Thanks
Brad

Re: Network Camera

Dave Kreskowiak22-Mar-07 6:43

Dave Kreskowiak

22-Mar-07 6:43

It looks like it already supplies most of what you'd need, short of a web server or media server. If you wanted to do your own custom solution, you'd have to have an SDK from the manufacturer.

Dave Kreskowiak
Microsoft MVP - Visual Basic

Re: Network Camera

Brad Fackrell22-Mar-07 7:11

Brad Fackrell

22-Mar-07 7:11

Dave Kreskowiak wrote:
It looks like it already supplies most of what you'd need

That’s right. I’d like to grab the External Trigger and Motion Alarm Output and force the camera application (or my own application (with theirs embedded??)) to be active. Maybe the cameras software already does this but other cameras that I’ve looked at simply use this feature to send an email.

For example, if I’m working on my computer and one of the cameras is activated I’d like that camera view to open “in front” of what ever else I have opened.

I don’t have any experience with this but I’m assuming that the manufacturer would not be very likely to give out the SDK without me forking over a good bit of cash.

Re: Network Camera

Brad Fackrell22-Mar-07 7:23

Brad Fackrell

22-Mar-07 7:23

Brad Fackrell wrote:
I’m assuming that the manufacturer would not be very likely to give out the SDK

I stand corrected. Big Grin | :-D

I just contacted the company that sells the camera and they are going to send me the SDK.

Re: Network Camera

Dave Kreskowiak22-Mar-07 7:43

Dave Kreskowiak

22-Mar-07 7:43

Brad Fackrell wrote:
but I’m assuming that the manufacturer would not be very likely to give out the SDK without me forking over a good bit of cash.

Not really. Most companies supply their SDK's for free (if they have one!), or there's a charge that's normally not very high. But, there's only one way to find out - give them a call! Big Grin | :-D

Dave Kreskowiak
Microsoft MVP - Visual Basic

Get DriveLetter [modified]

ayeleteric22-Mar-07 5:19

ayeleteric

22-Mar-07 5:19

I am writting a window form application in VB.NET
I need to get the drive letter, because my program run from CD ROM

Thanks

-- modified at 11:29 Thursday 22nd March, 2007

1) I am writting the following lines:
dim MyPath as string
MyPath=System.Windows.Forms.Application.StartupPath
System.IO.Path.GetPathRoot(MyPath)

2) I am publishing my application
3) I am running the application from drive F:\
4) I get that the "MyPath" variable is equal to "C:\...local....\" but not "to F:\..."

Please help

Eric H.

Re: Get DriveLetter

Christian Graus22-Mar-07 5:33

Christian Graus

22-Mar-07 5:33

Application.StartupPath ( from memory ) will include the current drive letter.

Christian Graus - Microsoft MVP - C++
Metal Musings - Rex and my new metal blog
"I am working on a project that will convert a FORTRAN code to corresponding C++ code.I am not aware of FORTRAN syntax" ( spotted in the C++/CLI forum )

Re: Get DriveLetter

ayeleteric22-Mar-07 5:35

ayeleteric

22-Mar-07 5:35

I did a modification in the same time that you answer me.
Please check again
Thank you

Eric H.

Re: Get DriveLetter

Dave Kreskowiak22-Mar-07 6:40

Dave Kreskowiak

22-Mar-07 6:40

The reason it's comming up with C:\Documents and Settings\... is because you're launching the .EXE from inside Visual Studio, not the F: drive.

StartupPath returns the full path of the folder that the .EXE started from.

If you want to test your app with a CD in the drive, complete with all your data, you'll have to modify your code a bit to include a static method that returns a path dependant on some condition, like if the startup path is rooted on C:, return a path that is rooted on F: instead.

Public Shared Function GetApplicationStartupPath() As String
    Dim realPath As String = Application.StartupPath
    If Path.GetPathRoot(realPath).StartsWith("C:") Then
        ' Return a bogus path to the root of the CD drive for testing
        Return "F:\"
    End If

    ' Return the real path were using
    Return realPath
End Function

Or you could use compiler directives to do the same thing. DEBUG will only be defined if the code is compiled and run from inside Visual Studio using the Debug build configuration. A Release version won't have DEBUG defined.

    Public Shared Function GetApplicationStartupPath() As String
#If DEBUG Then
        ' Return the bogus path to the CD drive, used for testing...
        Return "F:\"
#Else
        ' Return the actual StartupPath
        Return Application.StartupPath
#End If
    End Function

Dave Kreskowiak
Microsoft MVP - Visual Basic

Re: Get DriveLetter

ayeleteric24-Mar-07 20:07

ayeleteric

24-Mar-07 20:07

Hello,

Sorry but I don't know at least what will be the drive letter. I need to know it at run time.

I am new in VB.NET environment, my problem may be a configuration problem:
I create a new project (VS2005) as following, please do as I am doing:

1. File->New Project->RunFromCD(is the window application name).
2. Drag a new button (button1)
3.Here is the code
Imports System.IO
Public Class Form1

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

Public Shared Function GetApplicationStartupPath() As String
Dim realPath As String = Application.StartupPath
Return Path.GetPathRoot(realPath).ToString()
End Function
End Class

4. Build-> Publish RunFromCD->Next->From a CD-ROM or a DVD-ROM->Finish
5. Now I get a Published folder as following
- RunFromCD_1_0_0_1 (folder)
- RunFromCD.application
- RunFromCD_1_0_0_1.application
- setup.exe
6. I am copying all the published folder to drive D:\ and running the setup.exe, after clicking on the button1, I get from message box:
"C:\" but I expect "D:\"

Thanks you a lot for your help Smile | :)

Eric H.

Trying to utilize the auto databind features of VB.NET with no update luck... [modified]

Marcus J. Smith22-Mar-07 2:25

Marcus J. Smith

22-Mar-07 2:25

I have always done my own coding for the data piece but now that 2.0 is supposed to be so great Ive decided to take a shortcut with an application and just use the control binding along with the DataGridView which is bound to a table in the database.

How much code am I required to write myself when I use this method as opposed to manually creating my own dataset and my own update/insert/delete commands etc.? I thought it was supposed to do more work for me, the only command it actually created is the Insert command, so when I update a row and set it as modified by using the .BeginEdit/.EndEdit it says there is no Update command. Well if Im using the automatic setup here, I dont want to go into the Dataset code and write it myself when I believe it should write it for me ARGHHH!!

The problem is that Im used to adding the rows to the datatable myself, finding and editing that particular row then just updating the specific rows that I updated from the app. Im not used to just saying here's my data and figure out what's updated and what's not and do all the work.

-- modified at 9:02 Thursday 22nd March, 2007

_Cle^aKO

"I think you'll be okay here, they have a thin candy shell. 'Surprised you didn't know that.'" - Tommy (Tommy Boy)
"Fill it up again! Fill it up again! Once it hits your lips, it's so good!" - Frank the Tank (Old School)

Re: Trying to utilize the auto databind features of VB.NET with no update luck...

Christian Graus22-Mar-07 4:54

Christian Graus

22-Mar-07 4:54

I would recommend never doing this for real world applications, it moves your data access code too close to the presentation tier for my liking. You are indeed expected to put SQL in your code. You *can* tell it to call a proc, which I would regard as acceptable.

Re: Trying to utilize the auto databind features of VB.NET with no update luck...

Marcus J. Smith22-Mar-07 5:02

Marcus J. Smith

22-Mar-07 5:02

Well Im talking about a quick and dirty app for in house use only so in this case I might consider it acceptable. Poke tongue | ;-P

Re: Trying to utilize the auto databind features of VB.NET with no update luck...

Christian Graus22-Mar-07 5:09

Christian Graus

22-Mar-07 5:09

*grin* OK, well, in that case, you need to write SQL in your presentation layer to use that stuff Smile | :)

OT - Found you on another forum while searching about my problem

Marcus J. Smith22-Mar-07 5:10

Marcus J. Smith

22-Mar-07 5:10

Microsoft forums from 2006[^] HAHA! Laugh | :laugh:

Re: OT - Found you on another forum while searching about my problem

Christian Graus22-Mar-07 5:25

Christian Graus

22-Mar-07 5:25

*blush* you can't hide from google.

How should I set the paths for specific files?

JUNEYT22-Mar-07 1:25

JUNEYT

22-Mar-07 1:25

Hi!

Under my project's directory I created some files and one folder at design time. How should I set the path inside code for a specific file. Should I use Application.StartUpPath (Which is looking under bin\debug directory but my files are not there) or Application.Executable path or Environment.CurrentDirectory (Which is working fine but I was adviced to use Application.StartupPath)

If I use Application.Startup path, Should I carry the folder and some other files under bin\debug directory at design time? When user installs the application, will this folder and files be under application's main directory?

Thanks. D'Oh! | :doh:

What a curious mind needs to discover knowledge is noting else than a pin-hole.

Re: How should I set the paths for specific files?

Dave Kreskowiak22-Mar-07 5:45

Dave Kreskowiak

22-Mar-07 5:45

During development, you copy the files and directory structure to your target bin folders, just like you would see when you install the application on a users machine. You can do this with a batch file that is launched in the Post-Build event. See your Project Properties, Compile tab, Build Events button.

Don't believe me when I say you shouldn't use CurrentDirectory? Try adding a FileSaveDialog or FileOpenDialog to your application and not handling the thing correctly. You'll find that the CurrentDirectory changes to whever the user picks in those Dialogs.

Dave Kreskowiak
Microsoft MVP - Visual Basic

Animation during SQL

ayeleteric22-Mar-07 0:20

ayeleteric

22-Mar-07 0:20

Hello

I am writting a window form program in VB.NET. I am running a series of SQL and I want to show an animation gif during the SQLs.
How can I do this?

Thanks

Eric H.

Re: Animation during SQL

Christian Graus22-Mar-07 4:55

Christian Graus

22-Mar-07 4:55

Run the SQL code in a thread, then your main UI will remain active. There are classes for running animated GIFs on this site ( there is no built in support )

Datagrid control Enter key Key Press

somagunasekaran21-Mar-07 23:33

somagunasekaran

21-Mar-07 23:33

Hi All....
Iam using datagrid control with combobox and Textbox.So I want to Editing begins when the cell receives focus. This mode is useful when pressing the Enter key to enter values across a row, or when pressing the ENTER key to enter values down a column.

Thanking you
Somasundaram G

how to get the computer names in my workgroup and all workgroups connected to my computer

ahmad_yossef21-Mar-07 23:01

ahmad_yossef

21-Mar-07 23:01

how to get the computer names in my workgroup and all workgroups connected to my computer & the IP's of them

Lost & Forgotten

I can't see the Console window

ahmad_yossef21-Mar-07 22:38

ahmad_yossef

21-Mar-07 22:38

when i run an application i can't see the console window

Lost & Forgotten

Re: I can't see the Console window

Christian Graus22-Mar-07 4:55

Christian Graus

22-Mar-07 4:55

Is it a console app ?

Use Ctrl+Left/Right to switch messages, Ctrl+Up/Down to switch threads, Ctrl+Shift+Left/Right to switch pages.