Visual Basic Discussion Boards

angelo0718-Dec-07 20:07

18-Dec-07 20:07

Any one can help.? a i'm new in vb.net i have a problem to shutdown, rebot and display screenshot of certain computer in local group by intering ip their address. heres my problem..!

=>> A program that will ask the user to input an IP address and then capture the screenshot of the computer,restart,shutdown, the computer will the given IP address.

Hope Anyone can help me here.? Thanks and have a nice day..

God Bless....????? Smile | :)

Re: Help:

Christian Graus18-Dec-07 20:13

Christian Graus

18-Dec-07 20:13

IF you have a username and password, you can remote desktop to machines that support that, with an IP address. I don't know if it's possible through code.

Christian Graus - Microsoft MVP - C++

"also I don't think "TranslateOneToTwoBillion OneHundredAndFortySevenMillion FourHundredAndEightyThreeThousand SixHundredAndFortySeven()" is a very good choice for a function name" - SpacixOne ( offering help to someone who really needed it ) ( spaces added for the benefit of people running at < 1280x1024 )

Re: Help:

Vasudevan Deepak Kumar19-Dec-07 3:45

Vasudevan Deepak Kumar

19-Dec-07 3:45

Christian Graus wrote:
. I don't know if it's possible through code.

Actually there is a Microsoft provided utility called shutdown.exe (shutdown -i) invokes a 'Remote Shutdown Dialog'. But I am not sure whether that can be automated though.

Vasudevan Deepak Kumar
Personal Homepage
Tech Gossips

A pessimist sees only the dark side of the clouds, and mopes; a philosopher sees both sides, and shrugs; an optimist doesn't see the clouds at all - he's walking on them. --Leonard Louis Levinson

Re: Help:

Vasudevan Deepak Kumar19-Dec-07 3:43

Vasudevan Deepak Kumar

19-Dec-07 3:43

angelo07 wrote:
=>> A program that will ask the user to input an IP address and then capture the screenshot of the computer,restart,shutdown, the computer will the given IP address.

Are you intending to make something like 'Remote Shutdown Dialog' which gets invoked using shutdown -i from Windows XP onwards?

Upload file

tellytub18-Dec-07 19:55

tellytub

18-Dec-07 19:55

Hi all,

I'm using VB.net and currently I want to do a depositary which allow people to upload file to it. I researched and found a lot of resources, which they did using ASP.NET

1) Can VB.net - Window Form create depositary (upload files (.doc, .txt ..), etc?) [i know asp.net is also like under vb.net group, but the codes are kinda different, some functions only work for one but not for the another]
2) If yes, how do I do it? (cos' ASP.net uses localhost, how about general VB.net - Window Form)? Where would the files be uploaded to?

I hope I'm not too vague. Any help is appreciated. Thanks in advance.

telly

Re: Upload file

Christian Graus18-Dec-07 20:15

Christian Graus

18-Dec-07 20:15

tellytub wrote:
Where would the files be uploaded to?

Good question. You can do it, if you have an FTP site set up to copy the files to.

Multilingal application

A.kalai18-Dec-07 19:53

A.kalai

18-Dec-07 19:53

hi,
i have a .net windows application that support multiple languages, if it is installed in a spanish system, in what languages will the exception messages will be generated (ex.message). what other issues we may face while deploying the application.
please share your experiance, feedback and comments on this post with me.
if any more clarification is needed pl let me know.
thank you,
kalai

Error Handler

nishkarsh_k18-Dec-07 18:49

nishkarsh_k

18-Dec-07 18:49

Hello every one

I am developing a application in VB 2005
I am using On Error Goto to handle errors.

Now my issue is that I want to handle different type of errors in a function separately.

That is like
Do some thing if the database connection is not there
Do some thing else if the data is not found

And so on

I am not able to identify the errors in that way.. I am able to displaying the error number and description provided by the error object.

Is there any way to find out or a list of error numbers available?

Re: Error Handler

MohammadAmiry18-Dec-07 19:16

MohammadAmiry

18-Dec-07 19:16

Why are you still using this totally abandoned way of error handling?!!!

Use Try...Catch instead:

<br />
Try<br />
  .<br />
  YourCodeHere<br />
  .<br />
Catch ex1 As DataException<br />
<br />
Catch ex2 As IOException<br />
<br />
Catch ex3 As Exception<br />
<br />
Finally<br />
 .<br />
 .<br />
 .<br />
End Try<br />

Re: Error Handler

Nilesh Hapse18-Dec-07 19:17

Nilesh Hapse

18-Dec-07 19:17

Why are you using On Error Goto when you have Try... Catch block in VB.NET??

Re: Error Handler

Christian Graus18-Dec-07 20:11

Christian Graus

18-Dec-07 20:11

So, in other words, you're not using the mechanism that allows you to do this, so you want to know why you can't do it ?

Anything that VB.NET gets from VB6 is almost certainly a disaster.

mon***z18-Dec-07 18:40

mon***z

18-Dec-07 18:40

i want to convert some code in vb to vb .net..and i dont know how it will be. the vb code is
Screen.MousePointer = 11
i want to write in vb.net.. how we will write this code in vb.net. or in c# .net

Re: hi

Ajay.k_Singh18-Dec-07 19:10

Ajay.k_Singh

18-Dec-07 19:10

You may change mouse cursor using cursor property of Form, such as –

Vb.Net-

Me.Cursor = Cursors.WaitCursor

C# -

this.Cursor = Cursors.WaitCursor;

I hope this helps Smile | :)

.

-Dave.

Dave Traister,
ComponentOne LLC.
www.componentone.com

Re: hi

MohammadAmiry18-Dec-07 19:25

MohammadAmiry

18-Dec-07 19:25

My.Computer.Scree.MousePointer=Cursors.WaitCursor

picture box

BOREC18-Dec-07 15:48

BOREC

18-Dec-07 15:48

Hello!

1)How can I reset the picturebox so it doesn't show a picture in it.

I have a code that show a picture from a certain file path in it.

Private Sub Button1_Click(..)
PictureBox1.Image = System.Drawin.Bitmap.FromFile("C:\...\PICTURES\IMAGE1.jpg ")
EndSub

I want to create a new Button that shows no image in PicureBox1?

2) I also wanted to ask how can I make local file path ( I want my program that it always looks for a certain picture in a subfolder PICTURES of parent folder PROGRAM ( ...\PROGRAM\PICTURES\ ). Now I use absolute file path and it is very usefull.

Now I use this string:

PictureBox1.Image = System.Drawin.Bitmap.FromFile("C:\..\PICTURES\IMAGE1.jpg" )<-- I want to
replace this path in brackets.

3) And I want to write a code for writing a list of file names in a specific folder like PICTURES:

Dim FileName As String

For Each FileName In My.Computer.Filesystem.GetFiles("C:\...\PICTURES\"
ListBox1.Items.Add(FileName)
Next

That's all Confused | :confused:

Re: picture box

Luc Pattyn18-Dec-07 16:14

Luc Pattyn

18-Dec-07 16:14

Hi
1. PictureBox.Image=something puts something as the Image. Now what would
it take to show nothing whatsoever?

2. relative paths start without a device (such as "C:"), but are relative to the current
directory, which could be anything (especially after some FileDialog operations).
A path relative to the apps EXE file should be constructed, starting with Application.StartupPath

Smile | :)

Luc Pattyn [Forum Guidelines] [My Articles]

Sorry for any delays in replying, I currently don't always get e-mail notifications.

...

BOREC18-Dec-07 20:07

BOREC

18-Dec-07 20:07

Thanks for help I will see what comes out of it.

Well I wanted to ask you how can I make this error image to appear in case there is no such picture file in the path folder.

Re: ...

Luc Pattyn19-Dec-07 5:10

Luc Pattyn

19-Dec-07 5:10

BOREC wrote:
how can I make this error image to appear in case there is no such picture file in the path folder

Put the regular code in the try part of a try-catch, and signal any problem in the catch
part, maybe by setting PictureBox.Image=someErrorPicture (which could fail as well unless
you use an embedded image resource...).

Smile | :)

Luc Pattyn [Forum Guidelines] [My Articles]

Sorry for any delays in replying, I currently don't always get e-mail notifications.

what is this?

hassanasp18-Dec-07 12:49

hassanasp

18-Dec-07 12:49

Hello,
I am a newby to Visual Basic.. I have been having some problems with adding my data in my program. I am using Vb2005 and trying to use sotored procedure but h have error on run time
message error : No mapping exists from object type System.Windows.Forms.TextBox to a known managed provider native type

This is what I have so far :

Dim con As New System.Data.SqlClient.SqlConnection("Data Source=.;Initial Catalog=School;Integrated Security=True")
Dim com As New System.Data.SqlClient.SqlCommand("proce_school_info", con)
com.CommandType = CommandType.StoredProcedure
com.Parameters.AddWithValue("@School_NameAr", Me.textBox1.Text)
com.Parameters.AddWithValue("@School_NameEn", Me.textBox2.Text)
com.Parameters.AddWithValue("@School_Edara ", Me.textBox3.Text)
com.Parameters.AddWithValue("@School_Address", Me.textBox4)
com.Parameters.AddWithValue("@School_City", Me.textBox5)
com.Parameters.AddWithValue("@School_Nation ", Me.textBox6.Text)
com.Parameters.AddWithValue("@School_Phone", CType(Me.textBox7.Text, Integer))
com.Parameters.AddWithValue("@School_Fax", CType(Me.textBox8.Text, Integer))
com.Parameters.AddWithValue("@School_Email", Me.textBox9.Text)
'com.Parameters.AddWithValue("@School_City", Me.textBox8.Text)
com.Parameters.AddWithValue("@School_Country", Me.textBox10.Text)
com.Parameters.AddWithValue("@School_Abbrev", Me.textBox11.Text)
com.Parameters.AddWithValue("@School_FirstYear", Me.textBox12.Text)
con.Open()
com.ExecuteNonQuery()
con.Close()

Ahmed hassan

Re: what is this?

Colin Angus Mackay18-Dec-07 13:03

Colin Angus Mackay

18-Dec-07 13:03

hassanasp wrote:
com.Parameters.AddWithValue("@School_NameAr", Me.textBox1.Text)
com.Parameters.AddWithValue("@School_NameEn", Me.textBox2.Text)
com.Parameters.AddWithValue("@School_Edara ", Me.textBox3.Text)
com.Parameters.AddWithValue("@School_Address", Me.textBox4)
com.Parameters.AddWithValue("@School_City", Me.textBox5)
com.Parameters.AddWithValue("@School_Nation ", Me.textBox6.Text)
com.Parameters.AddWithValue("@School_Phone", CType(Me.textBox7.Text, Integer))
com.Parameters.AddWithValue("@School_Fax", CType(Me.textBox8.Text, Integer))
com.Parameters.AddWithValue("@School_Email", Me.textBox9.Text)
'com.Parameters.AddWithValue("@School_City", Me.textBox8.Text)
com.Parameters.AddWithValue("@School_Country", Me.textBox10.Text)
com.Parameters.AddWithValue("@School_Abbrev", Me.textBox11.Text)
com.Parameters.AddWithValue("@School_FirstYear", Me.textBox12.Text)

I've bolded two lines above. You will notice that the lines in bold are missing something that the other lines have. That is the .Text property.

And, by the way, naming your text boxes as textBox1, textBox2, etc. won't win you any friends. Please give them better names because the person that comes after you to maintain your code will curse you for it. And if you end up having to maintain the code you'll end up cursing yourself.

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My website | blog

Dock/float tab pages

cstrader23218-Dec-07 11:01

cstrader232

18-Dec-07 11:01

I notice that some .net programs do this -- allowing tab pages to float and dock in other places. Is this done with a 3rd party application, or can I do it through normal .net code? Perhaps this will be a new feature in 2008?

Thanks

Looping through database columns [modified]

craigmg7818-Dec-07 5:55

craigmg78

18-Dec-07 5:55

I have been using a FOR loop to loop through the column indexes in an MS Access table and create a textbox and corresponding label on a form for each column. I am incrementing an index to step through all the columns in the Columns collection for the table. I had expected that looping through the columns this way would loop through the columns from left to right in the table (or possibly loop through in the order that the columns were created.) Unfortunately it seems that the index order is more random than that.

My question is: How can I change the column indexes to my liking OR loop through the columns from left to right using VB.Net? My original code is posted below.

Thanks, friends.

- Craig

DataSetColumnUpperBound = EventsNotifications.Ds_BorrowerGenInfo.Borrower_General_Info.Columns.Count - 1

'Dynamically create textboxes and labels
For TBindex = 2 To DataSetColumnUpperBound
    Dim NewTB As New System.Windows.Forms.TextBox
    Dim NewLbl As New System.Windows.Forms.Label
    TBName = "Textbox" & TBindex
    LblName = "Label" & TBindex
    Me.Controls.Add(NewTB)
    Me.Controls.Add(NewLbl)
    NewTB.Name = TBName
    NewLbl.Name = LblName
    NewTB.Enabled = True
    NewLbl.Enabled = True
    NewTB.Visible = True
    NewLbl.Visible = True
    NewTB.Height = 20
    NewLbl.Height = 20
    NewTB.Width = 420
    NewLbl.Width = 420
    NewTB.Top = 85 + ((TBindex - 2) * 45)
    NewLbl.Top = 70 + ((TBindex - 2) * 45)
    NewTB.Left = 20
    NewLbl.Left = 20
    NewLbl.BackColor = Color.Transparent
    NewTB.Text = EventsNotifications.Ds_BorrowerGenInfo.Borrower_General_Info.Rows(0).Item(TBindex).ToString
    NewLbl.Text = EventsNotifications.Ds_BorrowerGenInfo.Borrower_General_Info.Columns(TBindex).ColumnName.ToString & ":"
    NewLbl.Font = New Font(NewLbl.Font, _
        NewLbl.Font.Style Or FontStyle.Bold)
    AddHandler NewTB.Enter, AddressOf WhichTextBox
    NewTB.ContextMenuStrip = ContextMenuStrip1
Next TBindex

"That rug really tied the room together."

modified on Tuesday, December 18, 2007 12:16:42 PM

Re: Looping through database columns

nishkarsh_k18-Dec-07 18:31

nishkarsh_k

18-Dec-07 18:31

Hi…
I am not sure how much will this help you, but I think there is an easier way then to change the index without going into VB.net codes…

Just change the order of fields to the way you want in the database query

Like…

Select a, b, c from tab1

To

Select c, b, a from tab1

Good luck
Nishkarsh

Re: Looping through database columns

craigmg7819-Dec-07 5:27

craigmg78

19-Dec-07 5:27

Thank you, Nishkarsh. You are absolutely right. Once I changed the SQL query it all fell into place.

"That rug really tied the room together."

Windows Service - timer tick event not firing.

Steven J Jowett18-Dec-07 5:08

Steven J Jowett

18-Dec-07 5:08

I have written a small Windows service that consists of a Windows.Forms.Timer control.
I have set the Interval property to 30000 and also tried 100. The Tick event of the timer never seems to fire.

Protected Overrides Sub OnStart(ByVal args() As String)<br />
        backupTimer.Interval = 30000<br />
        backupTimer.Start()<br />
    End Sub<br />
<br />
    Protected Overrides Sub OnStop()<br />
        backupTimer.Stop()<br />
    End Sub<br />
<br />
    Private Sub backupTimer_Tick(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles backupTimer.Tick<br />
        backupTimer.Stop()<br />
        'Other code here<br />
        backupTimer.Start()<br />
    End Sub

Any help appreciated

Steve Jowett
-------------------------
Sometimes a man who deserves to be looked down upon because he is a fool, is only despised only because he is an 'I.T. Consultant'

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