How To Do A Seemingly Simple Object-oriented In .NET 2010

Jun 17, 2010

how to do a seemingly simple object-oriented problem in VB.NET 2010. Basically, I want to be able to write code such that I could do the following:

Dim myObject as Object
myObject.Group1.Command1()
myObject.Group2.Command2()

[code]....

Very similar to how VBA handles objects, such as in Excel, I can use

Dim myBook as Workbook
Set myBook = ActiveWorkbook
myBook.Sheets(1).Range("A1").Value()

to get the value of the cell "A1" on the first sheet. This structure has been eluding me for some time now, and it would be great if anyone could suggest how to do it. I'm currently using a class and declaring all methods as Shared Friend inside subclasses, which throws warnings when I use it as I want to in other code.

View 4 Replies


ADVERTISEMENT

Object Oriented Design In Asp.net With VB

Apr 3, 2009

I try to convert vb.net code to an object-oriented design. This help page talks about doing it: [URL] I plan this:

[Code]...

View 1 Replies

Object-oriented Programming In .NET And C#?

Apr 16, 2011

good tutorials where i can read about the actual object oriented concepts which we use in real time scenarios. Not the "class is a container. fruit is a parent class and apple is a child class" kind of stuff.Recently i was developing a multithreaded GUI application in vb.net and found out many obstacles like using one form's element in another form, changing form property in other class, when to create objects to access elements and many other stuff stumped me.

View 4 Replies

Beginner's At Object Oriented Programming?

Sep 25, 2011

I'm trying to pick up some simple object-oriented programming skills so I am trying my hand at beginner's problem - and I am totally stuck...I'm trying to write a program that will print to a label, the area and perimeter of your shape of choice, dependent on the Length and Width (for Rectangles and Triangles) or Radius (For Circles) you input and the shape you select.

I know how to do this easily with simple event-driven programming, but I'm trying to do this by using classes and inheritance.The idea I have is that you enter in length/Radius and/or width into text boxes (txtLen, txtWid) and then you can click a button to display the Length, Width and Perimeter or Radius and Circumference, and Area.

I'd create a Super-Class: Shapes to define my overarching parameters - all shapes have area and perimeter. Then I would create sub-classes for each shape inheriting the overarching "Shapes" class - dim'ing all of their respective extra pieces. Then the buttons would display the appropriate info when clicked.I understand this seems like a lot - but really I just need help getting my feet on the ground for this.

View 4 Replies

Is VB An Object Oriented Programming Language

Jun 18, 2009

Is Visual Basic an Object Oriented Programming Language ?Working as a software engineer

View 2 Replies

Object Oriented Design Vs Procedural

Feb 27, 2009

Our company currently uses an APL model to illustrate our life products. We are in the process of converting this to Excel/VBA because the APL system is extremely difficult to maintain.APL is difficult to maintain because the code has become over the years (~15yrs) spaghetti and only a select people (who have worked here 5+years) really understand this to make updates when new products come out. APL is also not well known and difficult to understand. I just would like help on designing the system, my main career is not a programmer, and the design I was envisioning was a "Procedural" approach. (the APL is procedural rather then object oriented. I have not used object oriented code before)Basically the program illustrates a life insurance product. That just means it projects a fund out from the time the policy is issued to age 120. The illustration is given to the policyholder as a way of predicting what the value of their fund will be given some assumptions.The program does the following1.) Populate Variables2.) Calculate Premiums Types3.) Monthly processing4.) Output values to spreadsheetThe system has to illustrate different types of Products and we are adding new products to the system. Most of the main structure of the program (in VBA) is already written. It seems that (#3) monthly processing will vary by product, and I would like help with maintaining that part of the code. The other 3 parts of the program are not a problem maintaining.We will be continually adding products. We will start with about 5 products and maybe add about 5 per year.Here is the Monthly Processing code:... Call MonthlyProcessing(120, PremPayMode0, Assump0, True, DumpLumpSum0)

View 4 Replies

Object Oriented Programming Using .net 2008?

Aug 4, 2010

I need to write an program with two players rolling a pair of dice and the highest tally wins with an Game class having with two member variables of the type PairOfDice. I can not get it to work.

[Code]...

View 8 Replies

Some Good Object Oriented Books?

May 21, 2009

I'm looking for some good quality OO books, if any exist for VB .Net

View 10 Replies

The Power Of Object Oriented Programming?

Oct 28, 2009

Say I want to create a functionTry 5 timesThe function takes a function pointer to another function

function dosomething() as boolean
end function
function tryfivetime (thefunction as what?)

[code].....

View 5 Replies

VB Language And Object Oriented Programming?

Apr 20, 2009

i am new to asp and am currently trying to get my head around the visual basic language and Object Oriented Programming.From what i have read you need to have a good understanding of these to create good ASP.NET webpages, but from reading about these in books and joining the website [URL]..i am getting fairly confused with the language and the OOP. Does anyone out there have any tips for me when it comes to learning about these. Is there a good way to learn about these as i just seem to be getting really confused from the start.

View 5 Replies

Looping Through A Dataset - Object-oriented Approach

Feb 25, 2012

The problem is as follows, a group of users (~50k) must be filtered from a DB, four fields for each user must be saved into a variable, then a second process will take each user and proceed to enable some licences into another system/platform. Both processes will be developed into the same application.

My first attempt was basically a query looping through the users but I wonder if thinking in objects is a better approach.

I was thinking in a structure inside an object to hold the 4 parameters, then pass each user object to the other object however considering the amount of data I'm not sure if this is fine.

View 1 Replies

Object Oriented Analysis, Design & Implementation?

Apr 28, 2009

With this assignment, you are provided with an incomplete object-oriented implementation of the GAME MANIA software system based on Visual Basic 2008. The specification and the subsequent modelling are explained in a case study titled Game Mania: GAME AND GAME CONSOLE RENTAL STORE.

An implementation of the following classes are made available as the basis of your development work:

1.Member
2.Stock
3.Stock Item
4.Optic Reader
5.Card Writer
6.Membership Card

[Code]...

Note that the user interface provided is very basic. You need to change it, as you feel appropriate so that it will reflect the required functionality. For example, in the present implementation version, no provisions were made in the user interface for querying and handling fines associated with late returns.Providing this aspect in the user interface might be necessary as part of handling renting of games and game consoles.

View 6 Replies

Object Oriented Design For Manufacturing Programs?

Sep 13, 2011

This is a continuation on a different thread of mine because it got off topic. I have a program that i use select case statements, quite a few of them and did a lot of copy and pasting of code and had 5000 lines of code and was still building on it, it was suggested to use OOD so i am making a new thread related to that.

View 1 Replies

Object Oriented Programing, Where To Draw The Line?

Jul 10, 2011

I created a project in Excel-VBA (wich I'm also new at) that connect to a SQL. It retrieves data, puts it in arrays, calculates, writes it up nicely and mails it to a mailing list before it closes itself down. This works when Excel is stable on the server, which it is not. Therefore I'm set on rewriting it to VB.NET (just have to learn it first).Project:To build this project in VB.NET I wanted to try and make it Object Oriented (OO). I have read that OO is when I create a Sub or Module for different tasks. Are there any advantages in learning/doing this from the start? I plan on creating Subs for almost everything, and then call it from a Main sub.

Too much OO?:
These are the modules I plan to create (and call)
Connect to SQL moduleSet up a query and put data in arrays moduleCalculation moduleOutput

[code]....

View 1 Replies

Object Oriented Programming, Subroutines, Functions And Inheritance

Jun 29, 2010

I have been learning vb.net for about 6 months now and I red few books about basic visual programming as most to them have information about the basic concepts like what is Object oriented programming, subroutines, functions ,inheritance etc and bit about ADO connectivity to database. Having said all that I think I have good concepts about all these things but now I want to proceed further but can't find appropriate text books or online tutorials.

View 2 Replies

Visual Studio - Object-Oriented Black Jack

Feb 24, 2010

Alright, so I want to improve my programming and object orientation skills. I want to program a fully object oriented blackjack game in VB.net under Visual Studio 2008. The first thing I did was learn all the rules of BlackJack.

[Code]...

View 1 Replies

Very Simple Ssis Script Transformation Giving Object Reference Not Set To An Instance Of An Object

Mar 1, 2012

I have an ssis package that takes a flat file and dumps it to SQL. During that process, 150 columns need to have '-' and '.' removed from them. I have done this using a Script Transformation.

Public Overrides Sub Input0_ProcessInputRow(ByVal Row As Input0Buffer)
Dim column As IDTSInputColumn90
Dim rowType As Type = Row.GetType()

[code]....

Edit I've discovered that this line is the problem

Dim strCol As String = columnValue.GetValue(Row, Nothing).ToString()

View 1 Replies

C# - Design Reference And Object Oriented Design Of A CRM

May 25, 2011

I searched codeplex and google. I have found so many such as tustena but unfortunately they are not domain driven based and in these solutions I could not find a good modelling documents or references. i am a newbie in CRM but I am sensetive to design it with solid object-oriented fundamentals. Any reference or open source solution especifically for CRM design and implementaion in .NET? Cheers

View 1 Replies

.Net Win Forms App Crashes Occasionally, Seemingly Randomly?

Jun 2, 2011

I am developing Windows Forms Application SRacq10 in VS2010 in VB.Net. It provides a WCF duplex service and obtains real time financial market data using COM object TWS (Trader Work Station) provided by Interactive Brokers, Inc. SRacq10 works well most of the time. Occasionally, it crashes; I have not been able to observe a pattern of circumstances when it crashes. When I try to add debug to a text file, I can never make it crash; that's not an acceptable solution in the long run. Here is the fault information when running the debug version outside of VS2010:

Event Viewer:
Faulting application name: SRacq10.exe, version: 1.0.0.0, time stamp: 0x4de7a42c
Faulting module name: MSVCR80.dll, version: 8.0.50727.4940, time stamp: 0x4ca2b271

[code]....

View 4 Replies

.net: CInt Returning -1 On A (seemingly Valid) String?

Apr 24, 2009

I have a strange problem where CInt (as well as Convert.ToInt32 or even Val) return -1 for a string "500". Using Gurock's SmartInspect for logging, I've checked all values at runtime (SiAuto... logs something, I'm posting the log below the code).

[Code]...

View 2 Replies

.net - Floating Point Result Discrepancy Between Two Seemingly Identical Statements

Sep 14, 2011

I've got the following Visual Basic code:

Dim L16, L23, L45, t As Double
Dim LBase, LAdjacent, LOpposite As Double
L16 = 20

[Code].....

Both equations should be equivalent: I've simply replaced L16 with LBase, L23 with LAdjacent and L45 with LOpposite. Yet the first equation outputs 3586 while the second outputs 3587.

View 1 Replies

Windows Form - Missing Something Simple - Object Databinding?

Nov 26, 2011

I am missing something simple. I know how to bind asp.net datagrids and webforms, but this is my first time trying to bind to an object list of T in a windows form. (I am use to using datasets with datatables and im trying to get away from doing that).I have a simple object list that gets populated on the form load. However if I click a button to add a dummy record the datagridview does not display the new record added. The bindingNavigator (if clicked nextrecord) and "debug stops" all show that the new record I just added to the object list is there.

Even adding the datasource object in the watch list shows the new records are there. They are just not displaying.

I cannot seem to figure out as to why the new record is not being displayed in the datagridview when I can see the record got clearly added to the datasource.

[Code]...

View 4 Replies

C# - Start With Aspect Oriented Programming?

Mar 27, 2009

So having read some of the PostSharp documentation presented as an answer to my previous question regarding passive logging ([URL]), I am led to my next question: Where is a good place to start learning about Aspect Oriented Programming - I've done some searches on Google and I've read some articles - including the article regarding the topic on Wikipedia, but a lot of the material seems to assume you have a basic understanding of some of the terms which I seem to be missing, and that which doesn't just dives straight into integration leaving me not understanding what exactly it is I'm integrating.

Does anyone have any decent material targeted at someone who's never heard of Aspect Oriented Programming before today learn about the core concepts, terms/keywords etc? Even a birds-eye - i.e. These are the core concepts, keywords to look out for, what they stand for and how they fit together. After that, I can probably make some decent headway on my own. I'm most interested in AOP in relation to .NET development,

View 1 Replies

Draw Text Oriented Along The Direction Of Each Of These Lines?

Nov 6, 2011

I have some lines drawn in many different directions (2D y 3D enviroments). Is there any way to draw text oriented along the direction of each of these lines? It was an easy task in former versions of Visual Basic, but now it looks like a very tough -almost impossible- mission.

View 4 Replies

Service-Oriented Database Stores Data Temporarily

Feb 28, 2011

I am working on a database for a program. I used the .mdf file, created a table, and tried to store data in it.I did not build the program yet. I am still using it on a test drive or debug mode.I added three records to the database.I closed the program for 10 minutes and went back to writing code for it.When I opened up the program again, the database only showed that I had one record.This happened before and after I wrote other code for my program.I only started having the problem today?Is it possible that there is not enough room in the database to store all the records? The variable sizes for 3 of the fields are 400, 500,500, and 1000 and the other fields are like 50 each.All together there are 7 fields. I encountered the error after i had made one of the fields a look up field.In this field, basically I loaded categories stored in an extra files into the comboBox so users can select values without having to retype it.

Can you tell me what the error is and how I can fix it or what I am doing wrong in the program?How do I set up another table and query it to pull the values I want for the comboBox field?

View 4 Replies

VS 2010 Object Rotation And Move Object With Arrow Keys?

Feb 8, 2011

I want to learn how to rotate an object by direction and speed and also how to move an object using the arrow keys?

View 2 Replies

VS 2010 Search Listview: Object Reference Not Set To An Instance Of An Object?

Jan 18, 2011

I'm using the following code to try and search a listview (I got it from msdn):

Dim atem As New ListViewItem = ListView1.FindItemWithText(TextBox2.Text, True, 0, True)

If atem IsNot Nothing Then
ListView1.TopItem = atem
End If

Then I got the " Object reference not set to an instance of an object" error highlighting the following line: ListView1.TopItem = atem So then I tried this:

Dim atem As New ListViewItem atem = ListView1.FindItemWithText(TextBox2.Text, True, 0, True)

If atem IsNot Nothing Then ListView1.TopItem = atem End If it still isn't working.

View 10 Replies

VS 2010 Structure Of Lists - Object Reference Not Set To An Instance Of An Object

Oct 16, 2011

I am struggling with the following - I try to add a value to a list, where the list is defined in a structure.

[Code]...

View 3 Replies

VS 2010 - Error : Object Reference Not Set To An Instance Of An Object

Jun 22, 2012

I get error (Object reference not set to an instance of an object)trying to read a reg key, it stops after the first msgBox which shows MyRegKey value it shows a blank value

Dim MyReg As Microsoft.Win32.RegistryKey = Microsoft.Win32.RegistryKey.OpenRemoteBaseKey(Microsoft.Win32.RegistryHive.CurrentUser, (OldPCTxtBx.Text))
Dim MyRegKey As Microsoft.Win32.RegistryKey

[code]...

View 1 Replies

VS 2010 : Error: Object Reference Not Set To An Instance Of An Object

Nov 18, 2011

I have a treeview with a contextmenu. I'm trying to disbable specific items in the contextmenu when the user doesn't have a node clicked, but each try gives me the same error: "Object reference not set to an instance of an object."I tried several methods in the Mouse_Down-event (IsSelected, etc), this was my last:

If .Nodes.Count > 0 Then
If .SelectedNode.Text <> "" Then ' <<< this line is highlighted
enable_expl_mnu() ' enable the contextmenu

[code]....

View 3 Replies







Copyrights 2005-15 www.BigResource.com, All rights reserved