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OK, I think I got you confused a bit. If you're just going to create a control using existing components, then you'll want to create a User Control, inheriting from UserControl, NOT Control, or any other control.
You'll drop a DataGrid and your Button onto the designer. I think it's pretty intuitive from there. You'll initialize your instance of your control in the New method, not in any event. It's kind of the quick and dirty method to slap a control together. Really what you putting together is a wrapper around your datagrid and button to manage what they look like when the button is clicked. Your control code will just be handling the normal events and properties of the button and datagrid. About the only UserControl related event you'll have to deal with is the Resize.
I can think of a few pitfalls in putting this together.
The first is tracking what the height of your control would be expanded and colapsed. You'll have to track the current state of the control and modify you constituent controls to match the look your after.
To get rid of the scroll bars on the datagrid, you'll just have to set it's scrollbars property to None. Remember to restore this when you expand the control back to normal size.
RageInTheMachine9532
"...a pungent, ghastly, stinky piece of cheese!" -- The Roaming Gnome
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Dave, thanks again for replying. I was wondering if I needed a UserControl instead so had planned to play around that today - I've only ever written a couple but, as you say, they're pretty intuitive. I still need a custom datagrid control but that's just to add some common methods and properties etc... so when I've done that I'll drag both that and the button on to a new user control and go from there.
With the collapsed and expanded heights I worked out the ideal height of the Caption Row (which we are always using) and I simply make the button that height. I also shift the caption over about 8 spaces to make room for it at the top left of the capton bar - so far it work well - even if it's not the most elegant solution!
Cheers,
Mike
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Hi Developers,
I have been working in Web Application using ASP.net since a long time. In Web we have great facility of Style Sheets to follow the consistant format of different controls, like labels,tables,textfields etc. If we change the style in Style Sheet the changes appear in the whole application.
Can I have such flexibility and consistancy in desktop application using VB.net. I have heard something abt Control Collection but dnt know much abt it. Please suggest me its solution.
Thanks in advance
Lets work it Out.........!
-- modified at 3:11 Wednesday 18th January, 2006
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The Control collection is a collection of child controls on the Control (remember that a form is also a form of control - excuse the pun) and has nothing to do with the style of controls.
ColinMackay.net
"Man who stand on hill with mouth open will wait long time for roast duck to drop in." -- Confucius
"If a man empties his purse into his head, no man can take it away from him, for an investment in knowledge pays the best interest." -- Joseph E. O'Donnell
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There's no such thing as a style sheet in Windows Forms. You'd have to implement Skinning functionality in your code. Google for vb.net skinning[^] for examples and 3rd party libraries.
RageInTheMachine9532
"...a pungent, ghastly, stinky piece of cheese!" -- The Roaming Gnome
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fValue = TextWidth(lstCtrl.List(iIndex))
I got "compile error" message for the above code saying "Sub or Function not defined".
The code is in the following sub by Joshua Quick. Please tell me how to fix it, thanks.
' Analyzes given listbox and displays a horizontal scroll bar if needed.
Public Sub UpdateHorizontalScrollbar(lstCtrl As ListBox)
Dim fMax As Single
Dim fValue As Single
Dim iIndex As Integer
' Get length of longest text in listbox.
fMax = 0
For iIndex = (lstCtrl.ListCount - 1) To 0 Step -1
fValue = TextWidth(lstCtrl.List(iIndex))
If (fValue > fMax) Then fMax = fValue
Next
' Convert max text length to pixels.
fMax = fMax / Screen.TwipsPerPixelX
' Increase length for checkboxes and margins (in pixels).
If (1 = lstCtrl.Style) Then fMax = fMax + 13 ' Offset for checkbox.
fMax = fMax + 4 ' Offset for margins.
' Set horizontal scrollbar length.
SendMessage lstCtrl.hWnd, &H194, CLng(fMax) + 1, 0&
End Sub
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Sorry about the confusion there Joy.
The TextWidth() method belongs to the Form class. The code I gave you was copied from my old form code. I guess I wrongly assumed you would copy it into your form code.
Perhaps you can replace TextWidth() with lstCtrl.TextWidth()?
I'm guessing since I don't have access to my VB6 IDE right now (I'm not at the office).
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Perhaps you can replace TextWidth() with lstCtrl.TextWidth()?
Forget that. It's not going to work. Try this instead...
lstCtrl.Parent.TextWidth()
I'm running on pure memory and Internet searches here. So, fingers crossed! I hope this works for you.
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hi,
i am designing a mail program using MAPI control...MAPI control using OUTLOOK to send mails.
is it possible to send mail directly to internet without using OUTLOOK.
plz send me the code for that if possible
regards paritosh
Paritosh
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You could call the MAPI API functions directly if you wanted. Outlook and Outlook Express already do this using .DLL and .OCX wrappers.
Or you could write your own implementation of SMTP/POP3 clients and talk directly to the servers to send and receive mail.
Personally, I hate reinventing the wheel and would use existing controls and libraries to do this. But if you really want to attempt this stuff, you can find the MAPI docs here[^] on MSDN, or you can Google for "SMTP Client VB source" to find some examples.
RageInTheMachine9532
"...a pungent, ghastly, stinky piece of cheese!" -- The Roaming Gnome
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Hi Guys, Can you tell me how to select a record from a datagrid on mouse click event. I need to select a record and get the data in textbox, modify it and again update it back to the database.
With Best Regards,
Mayur
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Got the answer, Thnx a lot.
With Best Regards,
Mayur
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hi
I want to use the MAPI control and make a mail pro
Paritosh
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You're in luck! Permission Granted!
Or were you having a problem with your code somewhere??????
RageInTheMachine9532
"...a pungent, ghastly, stinky piece of cheese!" -- The Roaming Gnome
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hi,
please teach me how to capture a image by using mcisendstring form playing video file.
everytime i try to do it returns an error mci device doesn't support this command.
thanx
Kanchana
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Hey Folks,
I'm new comers in this group.
I have a question about RC4 programming.
If there anyone has RC4 script. I glad if you can share with me. I'm in studying about Encript method especially
RC4 method. I get problem to understand the algorithm.
I allready have the script but in C language. and I still got confuse. maybe you can help me please send the repply direct on my e-mail.
this is my e-mail address (Aldi_n4@yahoo.com).
Thanks before for your attention.
Happy Programming  ;P
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Dear guys,
I want to create several variable contain data that available for whole application. For example,
I want to store a UserID and I want it to be available for entire application.
In VB 6, I could simply declare a Public variable in a module and it will be available for read and write from anywhere in the application. How to do that in .Net?
Many thanks and regards,
WiL
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You can still setup Modules in VB.NET, but I don't recommend it since it'll pollute your namespace with all public members and methods.
A better way to do it would be to create a Global class containing Shared (static in C#) member variables.
Public Class Globals
Public Shared UserID As Integer
' Shared constructor. Initializes shared member variables.
Shared Sub New()
UserID = -1
End Sub
End Class
You can now access your global variables like this...
Dim id As Integer = Globals.UserID
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it's exactly what I want. Thank you so much. 
WiL
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where can i get flexgrid sample appiclation... How to (cellformat, cell can be clickable)... im using VB2005.net..
thank you... very much....
pls email me at welbertpm@hotmail.com
welbert
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Why would you use the old flexgrid instead of a datagrid ?
Christian Graus - Microsoft MVP - C++
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im trying to develop a simple calendar system... that could post the number of days in the fixed column header at the same time another identifier to be post on the fixed row...
could it be possible to use datagrid with these settings? pls i really need your suggestions.. and i need some sample applications...
thanks...
Welbert
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Yes, a DataGrid would be fine, and the web is full of samples, just google.
Christian Graus - Microsoft MVP - C++
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Dear VB6 friends,
Happy New Year to you!
If the number of items exceeds what can be displayed in the list box, scroll bars should automatically appear on the control. The user can then scroll up and down or left to right through the list. But only the vertical bar appears on my VB6 application.
Anyone knows how to fix it?
Joy Anne
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Isn't there a property that you set to say if you want the hscroll bars ?
Christian Graus - Microsoft MVP - C++
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