Visual Basic

Luc Pattyn4-May-09 0:48

Luc Pattyn

4-May-09 0:48

You're welcome.

Samir Ibrahim wrote:
Is that what you mean by WebRequest ?

Not really, I was thinking of http://msdn.microsoft.com/en-us/library/system.net.webrequest.aspx[^] but your code seems to do a similar thing.

Smile | :)

Luc Pattyn [Forum Guidelines] [My Articles]

Avoiding unwanted divs (as in "articles needing approval") with the help of this FireFox add-in

Samir Ibrahim4-May-09 1:08

Samir Ibrahim

4-May-09 1:08

Hi Luc,

Almost all my example depends on object (WMI or CreateObject) which I used to use in VFP, So that i am trying to find VB.Net Pure code.

Thanks for the link, Very Usefull Smile | :)

Like car accidents, most hardware problems are due to driver error.

Samir R. Ibrahim

Luc Pattyn4-May-09 1:33

Luc Pattyn

4-May-09 1:33

Hi again,

I have added example code to my web page on getipadr1[^].

It is C# code, but the same can be done in VB.NET (VB.NET has a Using...End Using block, similar to C#'s using statement).

Smile | :)

Luc Pattyn [Forum Guidelines] [My Articles]

Avoiding unwanted divs (as in "articles needing approval") with the help of this FireFox add-in

Samir Ibrahim4-May-09 2:44

Samir Ibrahim

4-May-09 2:44

Much better than the Link microsoft you post. Wink | ;)

Here is the vb.net version of your code.

Dim url = "http://www.perceler.com/getipadr1.php"
Dim req As HttpWebRequest = WebRequest.Create(url)
Dim resp As WebResponse = req.GetResponse()
Dim stream As Stream = resp.GetResponseStream()
Dim reader As New StreamReader(stream)
Debug.Print(reader.ReadToEnd)

Like car accidents, most hardware problems are due to driver error.

Samir R. Ibrahim

commiting multiple database operations

Luc Pattyn4-May-09 2:57

Luc Pattyn

4-May-09 2:57

OK.
However you should call Close or use a Using...EndUsing construct to clean up the WebResponse, Stream and StreamReader.

Smile | :)

Luc Pattyn [Forum Guidelines] [My Articles]

Avoiding unwanted divs (as in "articles needing approval") with the help of this FireFox add-in

nitin_ion2-May-09 20:52

nitin_ion

2-May-09 20:52

i have a dataset consisting of 3 tables table 1 is for insert , 2 for update and 3 for delete. if row one from table 1 is inserted only then row one from table 2 should be updated and so is with table 3. if any operation fails then all the data of row one from all three table should not happen. then they should move to next row.

one way is i use a for loop and apply transaction to the command and use logic for update and delete transaction.

but is there a way in .net where i can use transaction to a datatable and sync insert , update and delete operation between 3 tables.

Re: commiting multiple database operations

Mycroft Holmes2-May-09 23:49

Mycroft Holmes

2-May-09 23:49

nitin_ion wrote:
but is there a way in .net where i can use transaction to a datatable and sync insert , update and delete operation between 3 tables.

Not that I know of. Your design sounds like a horror.

You could move the processing into a stored procedure but it would still be 3 operations wrapped in a transaction.

Never underestimate the power of human stupidity
RAH

Visual Basic 2008 Express: Create Microsoft Access Table with Primary Key

helen002-May-09 7:41

helen00

2-May-09 7:41

Hi,

I am beginner in Visual Basic and i am using Visual Basic 2008 Express. I would like to do the following from a Visual Basic progrma:

a) Create a Microsoft Access Table with primary key and columns (Name, Address, Country, Tel No)
b) Insert records into the Access Table, after getting user input for Name, Address, Country and Tel No via textboxes

Can anyone kindly advise me some sample codes using the OleDBCommand? I tried to googling around but i'm stuck with creating the Access table with primary key.

Thank you very much for your kind help.

Regards,

Re: Visual Basic 2008 Express: Create Microsoft Access Table with Primary Key

Henry Minute2-May-09 13:35

Henry Minute

2-May-09 13:35

If you download the VS2008 Samples[^], you will find examples of how to do this sort of thing in the Data Samples directory.

Henry Minute

Do not read medical books! You could die of a misprint. - Mark Twain
Girl: (staring) "Why do you need an icy cucumber?"
“I want to report a fraud. The government is lying to us all.”

disable right click of mouse

hrishi3212-May-09 5:06

hrishi321

2-May-09 5:06

Hi to all,

Can we disable the right click of the mouse, (so that when my application runs teh user cannot do right click on the task bar and ends the process of my application)

thanks

Re: disable right click of mouse

Dave Kreskowiak2-May-09 5:32

Re: disable right click of mouse

2-May-09 5:32

You cannot stop the user from ending your application. All they would have to do is start TaskManager click on your app in the Process tab and click End Process.

A guide to posting questions on CodeProject[^]

Dave Kreskowiak
Microsoft MVP
Visual Developer - Visual Basic
2006, 2007, 2008

dan!sh 2-May-09 7:11

dan!sh

2-May-09 7:11

Your requirement sounds far too suspicious for anyone to help.

जय हिंद

Set Property of Read-Only to be False on Form

ymilan2-May-09 4:39

2-May-09 4:39

Hello,

I created a form in designer view with image bitmaps on them. I cannot do much in my code according to the compiler error that I have the images as read-only.

None of the images can be set to a value of image; windows.systems.forms.bitmaps doesn't allow it.

Any help on how I can make the form write and read or parts of the form, like the images that I want to move on the form would be appreciated.

Thank you in advance.

Dave Kreskowiak2-May-09 4:52

2-May-09 4:52

Your description makes no sense at all. I have no idea what controls and properties you're talking about that are "ReadOnly". If you ran your project and then went back to Visual Studio to make changes, and your app is still running, then, yes, nearly everything is going to be ReadOnly. You have to stop the app first, then make the changes in the designer.

A guide to posting questions on CodeProject[^]

Dave Kreskowiak
Microsoft MVP
Visual Developer - Visual Basic
2006, 2007, 2008

ymilan2-May-09 4:58

2-May-09 4:58

I did stop the app and looked in designer view, but there is no attribute I can set for the property of the form to be writable. Basically, I'm trying to move images on one part of the screen to the top of other images on the other side of the screen, in a drag drop operation. It doesn't work as I thought; I read several tutorials and tried different code, but nothing seems to move on the form at run-time.

I hope this is a better explanation.

Dave Kreskowiak2-May-09 5:30

2-May-09 5:30

ymilan wrote:
I did stop the app and looked in designer view, but there is no attribute I can set for the property of the form to be writable.

There is no such property. All of the controls on a form are static, meaning, you cannot move them around with the mouse.

YOU have to provide the code that will handle what happens when the user holds the mouse down on a control and moves the mouse around. This is not going to be a trivial task for a beginner. It requires in depth knowledge of how controls and mouse events work.

I wrote up an article on how to do this very thing with Label controls. You can read it here[^].

A guide to posting questions on CodeProject[^]

Dave Kreskowiak
Microsoft MVP
Visual Developer - Visual Basic
2006, 2007, 2008

ymilan2-May-09 5:45

2-May-09 5:45

So there is no way to just set the form to be writable off the bat?

I tried several mouseover, mousemove events that I found on net tutorials.   None of them worked.   HEre is code I have so far.

Private Sub Image1_DragEnter(ByVal sender As Object, _
ByVal e As System.Windows.Forms.DragEventArgs) _
Handles Image1.DragEnter
            Dim Button As Short

            If (e.Data.GetDataPresent(DataFormats.Bitmap)) Then

                  If (Button = VB6.MouseButtonConstants.LeftButton) Then
e.Effect = DragDropEffects.Copy
            Else
                  e.Effect = DragDropEffects.Move
            End If

      End Sub
      'Private Sub Hearts_DragDrop(ByVal sender As Object, _
      'ByVal e As System.Windows.Forms.DragEventArgs) _
      'Handles Hearts.DragDrop
      'Hearts.Item = e.Data.GetData(DataFormats.Bitmap)
      'End Sub

      Private Sub Hearts_DragOver(ByVal sender As Object, _
      ByVal e As System.Windows.Forms.DragEventArgs) _
      Handles Hearts.DragOver

      End Sub
      Private Sub Clubs_DragOver(ByVal sender As Object, _
      ByVal e As System.Windows.Forms.DragEventArgs) _
      Handles Clubs.DragOver

      End Sub
      Private Sub Hearts_DragLeave(ByVal sender As Object, _
      ByVal e As System.EventArgs) _
      Handles Hearts.DragLeave

      End Sub
      Private Sub Clubs_DragLeave(ByVal sender As Object, _
      ByVal e As System.EventArgs) _
      Handles Clubs.DragLeave

Sorry I'm a newbie, but I'm really trying....much appreciation in advance.

ymilan2-May-09 6:13

2-May-09 6:13

Would this be a sound article to study?

<a href="http://www.startvbdotnet.com/forms/mouse.aspx">http://www.startvbdotnet.com/forms/mouse.aspx</a>[<a href="http://www.startvbdotnet.com/forms/mouse.aspx" target="_blank" title="New Window">^</a>]

Dave Kreskowiak2-May-09 16:24

2-May-09 16:24

It's a very brief overview, but it's a decent place to start.

A guide to posting questions on CodeProject[^]

Dave Kreskowiak
Microsoft MVP
Visual Developer - Visual Basic
2006, 2007, 2008

Dave Kreskowiak2-May-09 16:25

2-May-09 16:25

ymilan wrote:
So there is no way to just set the form to be writable off the bat?

There is simply no such thing. If you want to move controls around on the form at run-time, you have to write the code that provides such functionality. It is NOT built into the Form, nor anywhere else in the .NET Framework.

A guide to posting questions on CodeProject[^]

Dave Kreskowiak
Microsoft MVP
Visual Developer - Visual Basic
2006, 2007, 2008

ymilan3-May-09 4:07

3-May-09 4:07

Ok, now I've read many tutorials and examples of mousemove, dragenter, and dragover. The main problem right now that I'm having is I'm trying to move a picturebox array. I keep getting compiler errors that value of type system.drawing.image is not a valid member or type of picturebox array.

I've looked up on MSDN the properties of pictureboxarray and it does show dragenter, dragover, and mousemove. However, I'm not finding any examples of how I can use the picturebox array to move the images I have on design view.

In VB6, all I had to do is set oledragdrop to true and it worked.

Any ideas on where or how I should accomplish this is much appreciated.

Hopefully I'm explaining a little bit better now. Thank you for your expertise.

Tiyani Miyambo4-May-09 0:30

Tiyani Miyambo

4-May-09 0:30

you could try to use pecture box. me.picturebox.image = directry of the image, play around on how to justify the size of the image to fit in the piturebox

waitforexit

hrishi3212-May-09 4:34

hrishi321

2-May-09 4:34

Hi,
Another problem of mine.
I run a process(say a calculator) from a button click. Now I want to resume(do nothing/disable) the form till the user finishes the process ie till he closes the calculator.
I am using waitforexit like below(not the exact code)

dim p as new process
p.startinfo="calc"
p.waitforexit()
p.start()

It works fine,.But sometime it gives an error in the line(p.waiforexit) saying that p has not been allocated any process (not the exact error, but with similar measning)

Please help me

Thanks in advance

Re: waitforexit

Dave Kreskowiak2-May-09 4:49