Class Project Developing Classes?
Apr 15, 2012
I'm working on a class project where I have to create an item class with private attributes, public get and set methods for the attributes, and two non-access methods. I have two textbooks I work with. The first book is Clearly Visual Basic(Zak) and the second is Programming, Logic, and Design(Farrel). I've set my private attributes but I am having difficulty writing what I want to accomplish in the VB.net language.
Class CD1
Declarations
private string cdName
private string aristName
[code]....
View 14 Replies
ADVERTISEMENT
Jan 7, 2011
Yesterday I opened Visual Studio (2008 v 9.0.30729.1) and all the winform classes in my project display with class module icons with the little 'VB', instead of form module icons with the little form icon!
When I double click on a form module, the form designer doesn't open, just the code module.
When I run the project, it runs fine. There are no errors. The project builds fine.
I did Project --> show all files, and I can see the designer and resx files below the form module which doesn't look or act like a form module.
I can't open my forms to design them!
View 1 Replies
Jun 13, 2012
How can I structure my classes so that the user interfaces though a single class while the supporting classes are hidden from their view? I think its best understood in an example:
Public Class MyInterface
Public Economic as EconomicClass
Public Sub New()
MyBase.New()
[code].....
So you might ask why am I even separating them? It's strictly for others who will be working with this interface. I need to funnel them though a logical structure:
interface.Economic.MyMethod
interface.Currency.MyMethod
etc
This way everything is already handled for them in the background and they only need to run the method they need. I don't know if I can have it both ways in VB.NET.
View 23 Replies
Mar 31, 2009
I am working on developing a livestock judging program for a 4-H project that will present you with a group of animals and you order the animals from best to worst by typing the placings in a text box (i.e. "1234").
When I type in the placings incorrectly, it comes up with the message box that it is supposed to, but when I type in the correct placings, it shows the message box that it is supposed to but then shows the message box that is supposed to show when you type in the placings incorrectly.
This is the code I have so far:
CODE:
View 2 Replies
Jan 1, 2012
I have Class1 and class2 which is inside class1, VB.NET code:
Public Class class1
Public varisbleX As Integer = 1
Public Class class2
[code]....
View 1 Replies
Jan 12, 2012
I am new to .net and was wondering if there are any projects which have sets of vb.net classes online which i can use. For example we have Flourish — PHP Unframework which has lots of php classes therefore a programmer doesn't not to replicate code on each project. Is there a asp.net (vb) resource website or any open source project which has built in vb.net functions.
View 3 Replies
Mar 18, 2009
How can I add c# classes to my vb project. I am using vb .net express 2008
View 1 Replies
Mar 12, 2012
I'm refactoring my VB project into 2 projects, one being a utility library that I want to share with future projects.My solution's layout is like this:[code].....
util is created as a class library, and the member files added into it. I've then added util into the main project's references.However, when I try to call functions in util.vb from my main project files, I get build errors like this:
error BC30451: Name 'LogException' is not declared.
error BC30002: Type 'VarFile' is not defined.
These are defined in util.vb, and it compiled fine when it was part of the main project. The declarations look like this: (I've trimmed out the details)[code].....
I can add util.vb "as link" into the main project and it will solve all the build errors, but that seems to defeat the purpose of refactoring out the class library - I would like to develop this library separately, and not always have to keep track of which file links I haven't added in my main project.
View 2 Replies
Dec 6, 2010
I have coded two seperate VB.net windows forms application as two seperate projects in seperate solutions. I now want to combine one project called "Reporting" into the other project called "AnalysisApp" and be able to call the Reporting apps main form.The Reporting app utilies a whole load of controls from DevExpress which are not included in the "AnalysisApp" I have added references in "AnalysisApp" to the DevEpress controls and also to the Reporting app, as well as combining the Reporting app into the same solution, but when I build the "AnalysisApp" it fails saying that it cannot find the DevExpress DLLs
View 3 Replies
Mar 11, 2009
I've 2 projects- one containing GUI and another a DLL project containing some implementations. I'm using Classes in DLL in my GUI. All that I wanna do is when some results are manipulated in the DLL, the final output from DLL should be made available in the RichTextBox present in the GUI project. I tried the WithEvents and also Add Handler. But its not working.In the DLL, I added...
Public Event Report(ByVal info As String)
RaiseEvent Report("The folder has been Copied.") In the GUI, I added...
Public WithEvents Log As RTAF_DLL.CServer // RTAF_DLLis the project name.
CServer is the class // in which the event has been writtenLog = New RTAF_DLL.CServer
Protected Sub Log_Report(ByVal info As String) Handles Log.ReportMsgBox(info)
// Even this is not getting printedMe.RichTextBox2.AppendText(info)End Sub
The problem here is I'm not sure whether or not the event is getting raised. But I set a breakpoint and found that the Event is not handled.I tried including Imports System.Runtime.InteropServicesBut its not working.
View 10 Replies
Jun 30, 2010
I'm making an application that will be available as both a Windows App and an ASP.Net App. The web app has a much scaled-down version of the functionality of the window app. I want to reference the classes contained with the windows app from my web app. The thing is, my classes in the windows app may have some modifications: if I reference them in my web app, will this pick up the changes made automatically? Also, referencing the project is for development work, when I go to deploy the web app, I will probably need to reference the classes as dll's. So the next questions are: 1. Is this the right way to go about doing this?
2. How do I make the Classes I have into self-contained dll files?
View 2 Replies
Jun 3, 2010
I am developing a very simple game in visual basic 2008: a roulette. And yet I found problems in develop it.My question is this: I have an image ,containing all the roulette's numbers and I want to associate the spaces of the different numbers to different buttons, so that which time I click in a certain number on the image it dos some action.How can make this association of the different spaces in the image and different buttons?
View 3 Replies
Nov 12, 2009
i create a class library or use already created class library in my windows service project. I have 1 dll file then how can i use that file in my project.?Logic is my Greatest Asset !
View 1 Replies
Aug 31, 2009
the client has asked for all forms and classes to be hidden from the main project, so when he sells it, they will only be able to see part of the project and not all the classes and forms.My Solution: I have created another project called project2, and added all the forms and classes from main project, fixed all errors and compiled it.I deleted all the forms from the main project and added a reference so that it gets all the forms from the other project by referencing the dll file, but it does not seem to work and get a lot of errors.is there an easier way of hiding the forms and classes from the main project or do I need to do more then just add the reference.
View 2 Replies
Mar 25, 2012
I have a class which has a variety of details, as follows:
Vehicle Name
Vehicle Address
VEHICLE Percentage: 10
I need to somehow use an Interface for another version, SpecialVehicle.
Special Vehicle has a different Percentage, for example 15.
How can I integrate that in an interface? I just don't understand them?
View 1 Replies
Jan 1, 2011
I've gone brain dead and can't remember how (where) to declare a variable to be shared by 2 forms (classes) in the same project.
View 2 Replies
Jul 22, 2010
I have a main application and the setup project for the app in a single solution.I have custom classes to detect in sql server 2005 express is installed. if it is not I have classes to install it and create my database.Now I need to call the above classes from my setup project before it installs my actual application on a client pc.
View 2 Replies
Apr 6, 2010
I am in college taking computer programming and we are now in multiple classes and forms. It was very hard to get ahold of at first but now that I understand it a bit better I am curious as to how often in a professional enviornment do developers create multiple classes for a project? Besides the use of custom functions what else is beneficial for it?
View 4 Replies
Jul 27, 2010
I have three classes Employee, Manager and Salesman. Manager and Salesman classes inherits Employee class.
Employee :
Public MustInherit Class Employee
' Field data.
Protected empName As String
Protected empID As Integer
Protected currPay As Single
[CODE]...
Manager :
Public Class Manager
Inherits Employee
[CODE]...
Salesman :
Public Class Salesman
Inherits Employee
[CODE]...
Now I have created a object of salesman and manager using the following code:
Dim objSalesMan as Employee=new Salesman("xyz",1,2000,5000)
Dim objManager as Employee=new Manager("abx",2,5000,"production")
Is this a good programming pratice or should I use:
Dim objSalesMan as new Salesman("xyz",1,2000,5000)
Dim objManager as new Manager("abx",2,5000,"production")
View 6 Replies
Feb 25, 2011
I am trying to create a class whose end result is do create an XML document. Currently the class consists of nested classes that each build a section of the XML document. What I am hung up on is how I should tie the results of the inner classes for the final output.Should the outer class pass an instance of XmlTextWriter to each of the inner classes that build up specific sections or should each innerclass just output a string representation of the XML and the outer class can piece them together?
[code]...
The code is not complete but I hope it gives an idea of what I am trying to accomplish. I need to find a way to gather XML sections together to output as a single document.
View 3 Replies
Apr 25, 2010
I'd like to be able to log to the console every time an event is fired either in the object I've instantiated or in anything it's instantiated [ad infinitum]. I wouldn't see some of these events normally due to them being consumed further down the chain). Ideally I would be able to log all public and private events but if only public are possible, I can live with that.
I've Googled and all I can find is how to monitor a directory - So I'm not sure if this is not possible or simply has a name that I don't know.
The sort of information I'm after is similar to what's found in an exception - Target Site, Source, Stack Trace, etc...
Could I perhaps do this through reflection somehow?
To Give you an idea of the console App:
Sub Main()
Container = ContainerGenerate.GenerateContainer()
Dim TemplateID As New Guid("5959b961-b347-46bc-b1b6-cba311304f43")
[Code]....
View 2 Replies
Jan 16, 2010
I have a class SELF that is hosted by a couple different classes. Basically, the hosting class HOST calls a method in SELF. SELF is passed HOST as an argument in the constructor, so SELF can call methods in HOST. In normal situations, a call to HOST will do something minor, then return so that SELF can continue. However, for one particular type of HOST, one of the calls from SELF to HOST will cause HOST to call SELF, and so on ad infinitum. A classic, though convoluted, case of recursion. Once again, this is only going to happen for one type of HOST. For other types of HOST, that particular call will not cause HOST to call SELF, so there will be no recursion. Nonetheless, there is no getting around it in one case.
I can see two means to decouple the recursion, and I am wondering which one (or a third) would work best:
1) Add a timer into that particular HOST so that the call from SELF that would trigger the recursion would actually just start the timer in HOST, then return. When the timer ticks, HOST can call SELF. The recursion is broken because the call to SELF is done on the timer event, and not when SELF called HOST.
2) As it happens, HOST makes the first call to SELF in a background thread, which means I don't really need to worry whether this thread blocks or not. Therefore, I could have this background thread spawn a second background thread to make the call to SELF, then have the initial HOST thread JOIN on the second thread. This means that the initial thread will block until the second thread finishes. Meanwhile, the second thread will call HOST, and the HOST won't call back to SELF, it will just return like all the other HOST objects would do. This will allow the second thread to run to completion. When the second thread completes, the first thread will take over and call SELF again on a new second thread. Therefore, the recursion is broken because the secondary thread will always run to completion, and the primary thread will wait for the secondary thread to complete, then call it again.
I tend to prefer the second option, because the first option involves a pause of some length (the minimum for a timer, which is pretty small), while the second doesn't, but the first option is actually a little easier to implement.
View 6 Replies
Aug 27, 2010
I'm wondering on how you would go abouts instantiating a class that contains other complex objects. for example an Payment Class which has Date,Time, etc.. and it also holds a reference to a paymethod object which has id,Type,Description etc.. How do you instantiate the payment class with all the other objects without one or the other failing, how do you create the payment class which doesn
View 4 Replies
Aug 4, 2010
I have to convert a set of C# classes (class library) to SQL tables to be used by SQL Server, so that the data can be stored in a database and manipulated through the database.The problem is that the number of these classes is big (more than 1000 classes),and it would take a long time to setup manually such a database schema (tables,ndexes, stored procedures, etc.) - not to mention the class hierarchies that I need to maintain.
View 6 Replies
Mar 3, 2011
I will preface this by saying Im previously an asp developer and am learning oop programming/Vb.Net
Im working on a 3 tier architecture and trying to abstract my code as much as possible since I have a very large intranet to convert. In my business layer I am defining my classes with management methods. Below is an example of one of my classes.
My question: Is there a way for me to genericaly refer to the class type and object type so that I dont have to continualy refer to the class name/type "ServiceRequest" throughout the class. For example something like:
[Code]...
View 1 Replies
Mar 6, 2009
Okay, say I have a class named "ChannelList", and it raises an event named "FoundChannel"
But what I'M wanting to do is create multiple classes of different names that use that class, but I want to have all of the "FoundChannel" events be handled under one single sub routine?
View 15 Replies
May 26, 2009
You know how everyone says "C++ is like C with classes"?How similar is it to .NET classes? instance a class, based on other classes, add new properties, override existing properties, etc?Are the variables strongly-typed and declared before they are used? Or is it a Duck-Typing language like Python?
Also, does it have its own Garbage Collector that disposes of objects when the pointer exits their scope,or do you have to manually clear and get rid of them when you finish with them? What's the difference between native C++, and the "managed C++" in Visual Studio? Because I'd prefer to use native code if its not too much harder. for the sake of all that is good and holy, don't use ACCESS, EXCEL, or a TEXT FILE as a database. If you want your program to use a "local database", without any of the hassle of setting up a MS SQL or MySQL server, just click this link: >>> SQLite <<< Seriously. This is for your own good.
View 3 Replies
Sep 24, 2010
I'm trying to use classes more in my programs. I'm using classes. This is the section of the main form that is causing the problem:
If conType = Nothing Then
TaOrIbt()
End If
objGetECaptureType.CaptureType(conType)
[CODE]...
View 12 Replies
Feb 2, 2010
Whats the best way to instantiate a class so that i can have access to the object from diffreent forms and classes?
View 2 Replies
Dec 5, 2010
Create a class to deal with records from the Classes table, much like the Student class we created in Lecture #17 handles Students records. The name of the class should be Ualb_Class (note we cannot use Class, as it is a reserved word in VBA). All of the fields should have corresponding properties. There are few considerations:
The class (course) code, department code, and course number are set at Initialize, so there is only a Get property method for those
The property for Meeting Day only accepts one of the values defined in the table. You can decide whether to accept an integer value or a string value of the days represented.
You are also to code the Initialize method, much like we coded the Initialize method for the Student class in Lecture #17. In the Initialize method, you will use the InputBox function to obtain the department code and course number. use a different InputBox for each value, so you don't have to mess with separating the single text value returned from that function. The Course Code will be obtained by using a function that has already been created, called GetNewCourseID. It has no parameters.
TABLE: Classes
Field Name
Data type
[Code]....
View 2 Replies
