Visual Basic

Sending a Text Stream in VB.NET.

14-Oct-06 19:06

If it's not an app you write, you'll have to use the WIn32 API functions GetWindow, FindWindow, and/or FindWindowEx to get the window handle you're looking for, then call GetWindowPlacement[^] to get the current state of the window.

You can look on http://www.pinvoke.net[^] for examples on how to call these functions.

Dave Kreskowiak
Microsoft MVP - Visual Basic

hariram2814-Oct-06 6:37

hariram28

14-Oct-06 6:37

Dear Sirs,

Could any one help me how to send a String from one application to other application in VB.NET.

Thanking You.

Hariram

Re: Sending a Text Stream in VB.NET.

Dave Kreskowiak14-Oct-06 19:08

Accessing Class from another Class

14-Oct-06 19:08

This depends on the other applicaiton. You can't just "send a string" to an application. If it's not expecting it the way you're sending it, you may as well be talking to the wall.

You'll have to explain the situation in greater detail, like how the other app expects this string and what your trying to do with the string, to get any kind of an answer.

Dave Kreskowiak
Microsoft MVP - Visual Basic

rahvyn614-Oct-06 6:35

rahvyn6

14-Oct-06 6:35

I have a dll that defines public properties within a class. These will be set from an external application. Within that dll, I am creating another class, and want to either pass in the properties, or make them accesible from the new class. However, when I try to pass in class A to class B, I get into an infinite loop. I am also not able to access Class A's properties from within Class B. Class A is Public, class B is private. Is there something special I need to do to access Class A props from within Class B?

Update database help [modified]

eric_tran14-Oct-06 5:01

eric_tran

14-Oct-06 5:01

Good day everyone,

I need to update a record into the database Access via table adapter in VB.net 2005.

The dataset is updated, but the record in the database Access is not.

Could anyone knows how to fix this problem?

Please help.I'd appreciate it so much.

Thanks

(Student_Details:table name)

MyDataSet.Student_Details.Rows(2).Item(3) = "new password"
     MyDataSet.GetChanges(DataRowState.Modified)
     Student_DetailsTableAdapter1.Update(MyDataSet)
     MyDataSet.AcceptChanges()

     Me.Validate()
     Me.Student_DetailsBindingSource.EndEdit()
     Me.Student_DetailsTableAdapter1.Update(Me.MyDataSet.Student_Details)

-- modified at 11:11 Saturday 14th October, 2006

eric

Make file that contains Text and Picture

FeRtoll14-Oct-06 2:36

FeRtoll

14-Oct-06 2:36

How can i create file that contains Text and Picture in it...
And than read in vb.net picture in picturbox and text in text box and if something is changed than save it... Sniff | :^)

FeRtoll Software.net
------------
E-Mail me
WebPage

How to quit application completely?

re infecta14-Oct-06 1:30

re infecta

14-Oct-06 1:30

I'm writing an app in VB.net with .NET 2. The application has a main form plus two other forms. When I click Exit-button on the main form, I call Me.Close(). After that MainForm_Closing routine handles the shut-down procedures. Ultimately I call Application.Exit(). The problem is that although the main form dissapears, application (.exe) keeps reserving system resources (95%!). How to close the application completely? I think the problem is that the two other forms are not closed, but hidden.

FeRtoll14-Oct-06 2:34

FeRtoll

14-Oct-06 2:34

on your form put button "Exit" in exit buton type like this:

     Private Sub cmdEnd_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles cmdEnd.Click<br />
Me.Close<br />
Me.Dispose<br />
     End Sub

and if you have to save anny data before closing, do it in "Form close event"

     Private Sub Form1_Closing(ByVal sender As Object, ByVal e As System.ComponentModel.CancelEventArgs) Handles MyBase.Closing<br />
'Saving data<br />
System.IO.File.Create(Application.StartUpPath+"\data.ini")<br />
     End Sub

------------------------------------------------------------------
Just be shure that u dont type on some other button which is suposed to end aplication that you type "End". Allways use "Me.Close"
------------------------------------------------------------------
Hope it helps! :->

FeRtoll Software.net
------------
E-Mail me
WebPage

Dave Kreskowiak14-Oct-06 4:27

14-Oct-06 4:27

Are you holding an unmanaged resources open that you should have Disposed? Started any threads that you didn't stop? Used a COM component that you didn't shutdown?

Dave Kreskowiak
Microsoft MVP - Visual Basic

hey_ian314-Oct-06 11:07

hey_ian3

14-Oct-06 11:07

Usually Application.Exit() is enough to close the process completely. If not, try to close all other forums with the .Close method.

Dave Kreskowiak14-Oct-06 19:00

Re: How to quit application completely? [modified]

14-Oct-06 19:00

Not exactly. If you leave running resources, like a thread not set as Background, it'll stay running and visible in TaskManager, regardless of how you exit the app.

If you don't do anything like this, leaving unmanaged resources orphaned, then Application.Exit will do what you expect it to.

Dave Kreskowiak
Microsoft MVP - Visual Basic

re infecta14-Oct-06 23:05

re infecta

14-Oct-06 23:05

My application is very simple, so I _think_ I haven't open any additional resources. MidiOutOpen is called when main form is loaded, but I close that in the MainForm_closing event.

I'm a beginner and I don't know what are threads. Can you please explain me? Still, I can see that two threads are left open even though application should have been shutdown. How to close all threads? Are active timer components threads?

What does the "Me.Dispose" command do? It didn't help though.

Dave Kreskowiak15-Oct-06 3:44

15-Oct-06 3:44

re infecta wrote:
My application is very simple, so I _think_ I haven't open any additional resources.

Even the simplest of applications can have the biggrest of problems.

Since you're using a Midi library, you're more than likely using unmanaged resources.

re infecta wrote:
MidiOutOpen is called when main form is loaded, but I close that in the MainForm_closing event.

You might want to check with the documentation of this library to see if your shutting it down properly. You can Open and Close it, but is this the correct procedure for using it??

DOn't worry about threads. If you didn't launch any, and you'll know if you did, you don't have the responsibility of managing them.

Don't do Me.Dispose. That tell's the current object, more than likely your form, to kill itself! This MAY be the cause of your problem...

Dave Kreskowiak
Microsoft MVP - Visual Basic

WestSideRailways30-Dec-06 22:30

WestSideRailways

30-Dec-06 22:30

What is the difference between the following :-

Application.Exit()
Me.Close
End

in ending a program. Confused | :confused:

Dave Kreskowiak31-Dec-06 4:55

May I know how to do this?

31-Dec-06 4:55

Application.Exit()[^]
Form.Close()[^]
Visual Basic.NET keyword End[^]

Dave Kreskowiak
Microsoft MVP - Visual Basic

Shell Icons [modified]

UltraCoder13-Oct-06 18:43

UltraCoder

13-Oct-06 18:43

Hey,

I was developing a program to edit shell icons and I had a reference list of what all the icons each code was for (i.e. 15 = My Computer). Anyway, I noticed that there were a few codes that's values were unknown, like: 14, 41, 42, 45 and 46. What shell icons are these?

And also, I was thinking of creating my own Dll file that holds pre-made shell icons (just like Windows' Shell32.dll). How do I go about compiling a Dll file to hold icons like that?

Thanks allot!

-- modified at 0:57 Saturday 14th October, 2006

Extreme Exe

cshong13-Oct-06 17:41

cshong

13-Oct-06 17:41

I'm using Microsoft Visual Basic 6.0.
I'm doing my VB project to be handed in to my lecturer.
I have the following code in my VB project:

Open "D:\data.txt" For Input As #1

I want my program to display a messagebox if the file "D:\data.txt" is not found. How to do it?

UltraCoder13-Oct-06 17:51

UltraCoder

13-Oct-06 17:51

This should work:

<br />
     If My.Computer.FileSystem.FileExists("D:\data.txt") = True Then<br />
        MsgBox("File not found")<br />
     End If<br />

Extreme Exe

Dave Kreskowiak14-Oct-06 4:23

14-Oct-06 4:23

This won't work in VB6.

Dave Kreskowiak
Microsoft MVP - Visual Basic

ADY00713-Oct-06 23:31

ADY007

13-Oct-06 23:31

First : imports System.IO

Then do this code:

if File.Exists("D:\data.txt") = False then
MessageBox.show("File not found")
End if

Adrian De Battista: .Net Programmer, Java Programmer and Web Designer.