Can Sub New be extended? - Visual Basic Discussion Boards

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Re: Extra line breaks while uploading the file on ftp server

MAP Tiger31-Jul-08 1:59

MAP Tiger

31-Jul-08 1:59

Hi
Thanks for the reply.

Well I figured out that it was due to binary mode set to true so I just switched off binary mode and switched on passive mode and my problem solved. Smile | :)

Problem was due to Linux server as it was manipulating the file if uploaded through binary mode and the file was huge too, and passive mode just did the trick so I am happy now.

Regards,

MAP Tiger
Tiger Softwares

Software Designer and Developer
VB.NET, ASP.NET, VFP

How can I center a picture box within an MDI Windows form?????

Joey Picerno30-Jul-08 8:43

Joey Picerno

30-Jul-08 8:43

I need to center a picture box in the exact middle of my windows MDI Parent form. Can anyone tell me the easiest way or best way to do this through code. Thank you!

Re: How can I center a picture box within an MDI Windows form????? [modified]

Gregory Gadow30-Jul-08 9:30

Gregory Gadow

30-Jul-08 9:30

The client area of an MDI form is an ordinary control, although it is not directly exposed by the form. This is a method I have in Class Toolbox:

Public Shared Function GetMdiClient(ByRef MdiForm As Form) As MdiClient
    Dim Client As MdiClient = Nothing

    For Each C As Control In MdiForm.Controls
        Client = TryCast(C, MdiClient)
        If Client IsNot Nothing Then Exit For
    Next

    Return Client
End Function

With that, you can then use this code:

Dim MC As MdiClient = Toolbox.GetMdiClient(MyMainForm)
If MC IsNot Nothing Then
    PictureBox1.Top = (MC.ClientRectangle.Height \ 2) - (PictureBox1.Height \ 2)
    PictureBox1.Left = (MC.ClientRectangle.Width \ 2) - (PictureBox1.Width \ 2)
End If

Using this technique, you can do things like change the background color of the MDI client area. MdiClient exposes a BackgroundImage property, which might allow you to dispense with the PictureBox entirely.

Edited to fix another bug Sigh | :sigh:

modified on Wednesday, July 30, 2008 3:41 PM

Re: How can I center a picture box within an MDI Windows form?????

Joey Picerno30-Jul-08 9:33

Joey Picerno

30-Jul-08 9:33

I already am using a backgroundimage with the backgroundimage property. I just need another image ( a logo ) to overlay the background image and always be in the center of the MDIForm. I am about to attempt to try your method, I appreciate your response and I will let you know if it works or not. Thanks again!

PROBLEM

Joey Picerno30-Jul-08 9:51

Joey Picerno

30-Jul-08 9:51

I tried what you wrote and for some reason it isnt liking this line of code :

Dim MC As MdiClient = clsGetMDI.GetMdiClient()

I get a squiggly under clsGetMDI.GetMdiClient. I changed the name of the class by the way from toolbox to clsGetMDI. It is saying argument not specifyed for the parameter frmMainMDI in the public function getmdiclient etc. frmMainMDI is the name of my MDI Parent form. I have the exact same code you do except I replaced MDIForm with the name of my actual MDI form and I have a different class name where the function is located, that is it. Other than that I am using the exact same code.

Any thoughts????

That was one of the bugs I fixed

Gregory Gadow30-Jul-08 9:52

Gregory Gadow

30-Jul-08 9:52

You need to pass in the the form. Sorry about that.

Re: That was one of the bugs I fixed

Joey Picerno30-Jul-08 10:07

Joey Picerno

30-Jul-08 10:07

Ok gotcha, it is working fine now. Thank you for your help. You saved me a major headache... Thanks!!!!

Can Sub New be extended?

Gregory Gadow30-Jul-08 7:00

Gregory Gadow

30-Jul-08 7:00

DataGridViewTextBoxCell has a single constructor, which takes no parameters. I would like to extend it to have a constructor with an object parameter, which will set its value in one statement, like this:

DGVRow.Cells.Add(New DataGridViewTextBoxCell(StartingValue))

The extension method should look like this:

Public Module Extensions

    <Extension()> _
    Public Sub New(ByVal this As DataGridViewTextBoxCell, ByVal Value As Object)
        this.Value = Value
    End Sub

End Module

This produces error squiggles under Public ("Shared 'Sub New' cannot be declared 'Public'") and New ("Shared 'Sub New' cannot have any parameters.") Using any name other than New eliminates the errors.

Can what I want to do be done without subclassing?

Re: Can Sub New be extended?

Thomas Stockwell30-Jul-08 10:39

Thomas Stockwell

30-Jul-08 10:39

You would have to create a class derived from the DataGridViewTextBoxCell and then add a constructor that would call its base constructor.

Also, since the new constructor is used on a per instance basis you cannot use the shared keyword.

Regards,
Thomas Stockwell

Programming today is a race between software engineers striving to build bigger and better idiot-proof programs, and the Universe trying to produce bigger and better idiots. So far, the Universe is winning.

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That's what I was afraid of

Gregory Gadow30-Jul-08 10:51

Gregory Gadow

30-Jul-08 10:51

I'm guessing that the Shared keyword is added implicitly, by virtue of it being in a module. Ah, well.

Re: That's what I was afraid of

Guffa30-Jul-08 13:06

Guffa

30-Jul-08 13:06

Yes, everything in a module is static.

Despite everything, the person most likely to be fooling you next is yourself.

Exporting excel 2003 contents to access 2003 database using vb.net 2003

chandrubngit30-Jul-08 5:11

chandrubngit

30-Jul-08 5:11

I need to develop an windows based application in vb.net 2003. I have access 2003 database where an exisiting data with primary key( for combination of 3 fields).I need to import data from excel 2003 and add to the existing records of access database.Before adding, it should check for any existing records in access databaseWith the help of primary key( only unique records).only new records should get inserted into database.my excel file may contain more than 2000 records with around 15 columns. I’m finding it very difficult to proceeed for writing code for this in vb.net 2003 as I’m a beginner. Pls help me in this regard…any sample codes wil help me a lot…

Thanks all in advance for ur valuable suggestions...

Regards
chandru

Re: Exporting excel 2003 contents to access 2003 database using vb.net 2003

Paul Conrad30-Jul-08 7:01

Paul Conrad

30-Jul-08 7:01

chandrubngit wrote:
I’m finding it very difficult to proceeed for writing code for this in vb.net 2003 as I’m a beginner. Pls help me in this regard…

I suggest taking on simpler tasks until you are up to speed with vb.net....

"The clue train passed his station without stopping." - John Simmons / outlaw programmer

"Real programmers just throw a bunch of 1s and 0s at the computer to see what sticks" - Pete O'Hanlon

running batch file within an application

Matodzi30-Jul-08 4:40

Matodzi

30-Jul-08 4:40

I have have 4 batch files that I need to start as a process one after another? How do I make them to wait for the other one to finish before another one starts? I tried google, no luck

Re: running batch file within an application

jzonthemtn30-Jul-08 5:32

jzonthemtn

30-Jul-08 5:32

Process.WaitForExit Method[^]

did tcplistener can listen to one specified client ip

shee_dee8630-Jul-08 4:23

shee_dee86

30-Jul-08 4:23

hi,
here i want to know, did tcplistener for my server windows form application can listen to only one choosen IP client?
i make my tcplistener in a thread that always listener to the incoming client IP, for example i want to listen to only client ip "192.168.168.2" and ugnore other IP, can i do that?

Re: did tcplistener can listen to one specified client ip

jzonthemtn30-Jul-08 5:30

jzonthemtn

30-Jul-08 5:30

Yes, just check to see if the client's IP is one that you accept. Refer the second post here[^] on how to get the client's IP.

Is ocx registered?

cstrader23230-Jul-08 3:18

cstrader232

30-Jul-08 3:18

Can I see programmatically whether a given ocx is registered?

Thanks!

Re: Is ocx registered?

jzonthemtn30-Jul-08 4:26

jzonthemtn

30-Jul-08 4:26

See if this code[^] will help.

Re: Is ocx registered?

cstrader23230-Jul-08 5:12

cstrader232

30-Jul-08 5:12

OK, I'm going to try it...

Thanks!

Generating a report using wizard and storing as PDF

Subzito30-Jul-08 2:45

Subzito

30-Jul-08 2:45

Hi Guyz

I'm doing a project using VB.Net and so i would like to allow users to create reports using a wizard and then be able to store those reports as pdf files.

Help me out
Thank u in advance

Subzical

Re: Generating a report using wizard and storing as PDF

Paul Conrad2-Aug-08 19:01

Paul Conrad

2-Aug-08 19:01

What have you done so far?

"The clue train passed his station without stopping." - John Simmons / outlaw programmer

"Real programmers just throw a bunch of 1s and 0s at the computer to see what sticks" - Pete O'Hanlon

much confused Help!!!!

morena.harris30-Jul-08 1:59

morena.harris

30-Jul-08 1:59