Visual Basic

Re: need help related to error in vb.net

11-May-06 23:15

Maybe the object you are using is destroyed

ICQ:258-235-734

prasanna812-May-06 1:26

prasanna8

12-May-06 1:26

hi,

but this doesnt happeen on specific form , this error can come up on any form, and this application is migrated from vb6 to vb.net framework 1.1, so what is the solution on this problem.

regards,
prasanna karandikar

Re: need help related to error in vb.net

codeadair12-May-06 14:30

message box like msn alert box in a VB.NET application project

12-May-06 14:30

follow up the scent

ICQ:258-235-734

cylix200011-May-06 19:00

cylix2000

11-May-06 19:00

I have a application which will check some data in database accroding to a timer,
I would like to show a message just like the new email/message alert box in MSN MESSAGER or OUTLOOK 2003.
How can I do that?

Besides that, how can I get the focus to my application when The checking indicate some differnece?

Thank you!

Doing something when I press "Enter" key

friendshiple11-May-06 14:42

friendshiple

11-May-06 14:42

I have a textbox, how i can handle press "Enter" key event, i wait for help from everyone.
Thanks very much.

abipeter198311-May-06 17:46

abipeter1983

11-May-06 17:46

I am a newbie Just try this

Private Sub TextBox1_KeyDown(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyEventArgs) Handles TextBox1.KeyDown
If e.KeyCode = Keys.Enter Then
e.Handled = True
End If
End Sub

codeadair11-May-06 23:07

11-May-06 23:07

Private Sub TextBox1_KeyPress(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyPressEventArgs) Handles TextBox1.KeyPress
If e.KeyChar = Chr(13) Then
'event
End If
End Sub

ICQ:258-235-734

alwinSCH6-Jul-06 4:42

alwinSCH

6-Jul-06 4:42

Hi,

I used this:

Private Sub TextBox1_KeyPress(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyPressEventArgs) Handles TextBox1.KeyPress
If e.KeyChar = Chr(13) Then
'event
End If
End Sub

--> but it didn't work in my application
is there some property of the textbox that must be true or false to use this?

I can hit any other key and it works fine
but when i hit enter he does not go to this procedure

I use VS2005

what could i do, please help?

Thanks
Alwin

alwinSCH6-Jul-06 4:49

alwinSCH

6-Jul-06 4:49

Never mind I solved it myself!

When i put off the Acceptbutton property of the form
it was OK!

Thanks Anyway
A.

codeadair6-Jul-06 14:20

How can I emulate the mouse?

6-Jul-06 14:20

That's Right

ICQ:258-235-734
MSN:msnadair@hotmail.com

Klazen11-May-06 14:31

Klazen

11-May-06 14:31

Basically, what I am aiming for is to be able to take the current coordinates of the mouse onscreen and emulate a mouse click at that location by pressing a key on the keyboard.

I'm pretty much lost on locating the mouse and sending a click. Also, this needs to be able to send the click when other windows have the focus, and I don't know how to do that.

I've tried searching for this, but all I get are instructions in C#.

Thanks for taking the time to read this.

Beginners help on forms/database

johncassell11-May-06 10:55

johncassell

11-May-06 10:55

Hello, I am very new to Visual Basic / Visual Studio 2005 Pro and was wondering if anyone would be so kind to help me construct my first program..

I am using Microsofts sample Nwind.mdb database (With Customers and Orders in the data source window).

When I open my form I would like it to show 3 boxes - 1.The Order number box, 2.The Customer box and 3.The Freight box.

When I enter an order number and press enter it will populate the other 2 boxes.

Sorry if you get this questions all the time but the 'help' section is not helping me!!

I'd appreciate any help at all.

Thanks very much

--------------------------------------------------------------------------------
John C

-- modified at 16:56 Thursday 11th May, 2006

Re: Beginners help on forms/database

prasanna811-May-06 19:52

prasanna8

11-May-06 19:52

hi john,
populate the other 2 boxes u need to write code to extract data in tow boxes on command button click event , after writting code on command button set the Acceptbutton property of form e.g ( Acceptbutton= cmdClick), so after setting this property when u press enter key it will populate the other 2 boxes.

regards,
prasanna karandikar
prasannak5@hotmail.com

Re: Beginners help on forms/database

johncassell16-May-06 6:58

johncassell

16-May-06 6:58

many thanks for that prasanna,

I have been able to set the Accept button of the form so that when I click enter in the job number box I can make the text in the other box change (I made it change to 'john') but I have absolutely no idea how to extract data from a database.

This was my code for the text change...

---------------------------------------------------------------------------------------------
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
EmployeeIDTextBox.Text = "john"
End Sub
---------------------------------------------------------------------------------------------

Any chance you (or anyone else) could show me how to extract data from the database?

Thanks

John

Re: Beginners help on forms/database

abipeter198325-May-06 3:30

abipeter1983

25-May-06 3:30

I am a newbie....

Pls ignore this is a wrong solution

You need to pass the order number in order to get the Customer and Freight details...

orderNo= comboBox.selectedValue

SQL code could be: select customerName,Freight from the "TableName" where order no='" & orderNo & "' orderBy customerName

How to send text strings to Excel Worksheet?

Rashar11-May-06 10:40

Rashar

11-May-06 10:40

Hello,

I have a small app that reads in a text file line by line. How do I take each line of text and dump it into an Excel Worksheet?

<br />
 Do<br />
                inputLine = sr.ReadLine<br />
                If Not (inputLine Is Nothing) Then<br />
                    <br />
                    strColumn1 = inputLine.Substring(38, 28).Trim<br />
                    strColumn2 = inputLine.Substring(66, 12).Trim<br />
                    strColumn3 = inputLine.Substring(78, 1).Trim<br />
                    strColumn4 = inputLine.Substring(79, 4).Trim<br />
                    strColumn5 = inputLine.Substring(90, 7).Trim<br />
                    strColumn6 = inputLine.Substring(99, 2).Trim<br />
                    strColumn7 = inputLine.Substring(102, 2).Trim<br />
                    strColumn8 = inputLine.Substring(108, 3).Trim<br />
<br />
                    'here I would like to take the values of my Columns and create a CSV file or write the values of my columns to a blank Excel worksheet...<br />
<br />
                End If<br />
            Loop While Not (inputLine Is Nothing)<br />

Thanks in advance,

Rashar

Need Help Accessing Functions in a DLL

rjlohman11-May-06 10:24

rjlohman

11-May-06 10:24

Hi, all:
I've been around VB for a while, but am new to .Net and accessing DLLs. I'm currently working on a project in VB 2005 Express, and am having trouble executing functions contained within a DLL. Part of the problem (I expect) is my inexperience with terminology, as I can't seem to find anything in the help on Google that seems to apply. Here's the scenario:

I have an application that needs to open a CSV file in one format, and write selected fields out to a new file in a new format. There will be many input and output formats (many that I have not yet concieved of) so I thought I would place the reading/writing routines in external files. This way, when a new format comes along, I just have to write a new DLL, and through the configuration files, call that DLL. This way, the core app that handles opening of files, specifying default directories, user interface, etc. does not have to be recompiled each time I come up with a new output format.

I used VB 2005 Express to create a DLL project called iclocalio (thus, iclocalio.dll). Within that file are two functions, GetDataFromLocalFile, which is to be called from the core app, and GetICDataFromString, which is called from the first function. GetDataFromLocalFile returns an array. (BTW, I have already tested the logic by including these functions in my core app - they pull the data as expected, so I have since moved them out to a DLL file where they will hopefully take up permanent residency).

In the core app, I expect to call GetDataFromLocalFile, passing a filename string as an argument, and assigning the result to an array, a la:
arData = GetDataFromLocalFile(ByVal sFileName As String)

The problem is that I have no idea how to tell my app that this DLL exists, or that there is a function inside of it that I can call. Any help on this is appreciated. Even if it's along the lines of 'what you're trying to do is [insert correct terminology here] so see this MS help topic: xxxxx'.

Thanks in advance!

:Rich Lohman

Dave Kreskowiak11-May-06 15:33

Dave Kreskowiak

11-May-06 15:33

Basically, you're looking to write a plugin framework. Search the articles for plugins, or just click[^].

Dave Kreskowiak
Microsoft MVP - Visual Basic

rjlohman12-May-06 5:42

rjlohman

12-May-06 5:42

Thanks, Dave. Most of the content surrounds C#, but at least I can do some more googling using the 'plugin framework' keywords.

Richard::Lohman()

arcticbrew12-May-06 9:37

arcticbrew

12-May-06 9:37

Have you tried adding your DLL as a reference to your project? Should be all you need to do if the DLL was written with a .Net language.

Steve

rjlohman18-May-06 11:42

rjlohman

18-May-06 11:42

Steve:
I have not, but this sounds interesting. I'm using VB 2005 Express for both the core app (GUI, file/directory selection, etc.) and the DLLs (data import/export), so this may be an option.

[Rich plays in VB for a while]

So, after adding a reference to the project for one of the DLLs, all I need to do, then is call the function located in my DLL from my core app?

Richard::Lohman()