Call & Use A Classes Type From Methods Within The Class?

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]...

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Reflection - Function Witch Return Type Is The Class Itself In Inherited Classes?

Dec 10, 2011

I have a parent class that is also a factory. For example:

Public Class Factory
Public Function clone() as Factory
' Some logic here

[code].....

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Making Class Methods Instead Of Instance Methods In .NET?

Mar 29, 2010

I am not sure how clear my question is by the title, but I am trying to make Class methods instead of Instance methods in Visual Basic that way I don't have to waste memory and code creating temporary objects to execute methods that don't need instance variables.

I am not sure if you can do that in VB but I know you can in Objective-C by using either a "+" or "-" sign in front of the method declaration. And in C++ (at least I think, I can't remember) you put the static keyword or const keyword in front of the function.How would I do this in VB if it is possible? Or should I just make a separate set of functions that are not members of a class?

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VS 2010 Structure Classes So That The User Interfaces Though A Single Class While The Supporting Classes Are Hidden From Their View?

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.

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Get The Classes, Methods Inside An Net Assembly?

Aug 22, 2009

I used reflection to get the classes, methods inside an Net assembly. Everything works fine when a function only have one version (not overloaded), but when i get overloaded versions i can't get any version...

I build a simple application with a simple class and added a method with two versions, and i can get the correct version using the GetMethod.I don't know if it's the parameters type, but i can get it work. Example, the sub BASS_Init has 2 versions

BASS_Init(ByVal device As Integer, ByVal freq As Integer, ByVal flags As Un4seen.Bass.BASSInit, ByVal win As System.IntPtr, ByVal clsid As System.Guid)and

BASS_Init(ByVal device As Integer, ByVal freq As Integer, ByVal flags As Un4seen.Bass.BASSInit, ByVal win As System.IntPtr) And one of the next two should work, but none works get nothing every time:

[Code]...

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IDE :: Standardize On XML Commenting For All Of Our Classes And Methods

Mar 28, 2006

My group is attempting to standardize on XML commenting for all of our classes and methods. We like the "Insert comments" option in VS 2005 but would like to add an additional tag <history> to the comments section. I know that we could probably do this manually each time we add a new class, but I would like to be able to have this new section come up automatically when we insert the comment.

[Code]...

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Provide Db Scalar Methods In All Classes?

Mar 5, 2009

We build a class (i.e. Server) and create a LOAD method that loads a dataset with all the details of that object.We need all that information sometimes... but what about when we only need one piece of data from that object (i.e. webserviceUrl).Should we build classes with a bunch of scalar methods that get back single pieces of data as opposed to only getting ALL the data and then only taking what we need?It's a waste to get all the data when we dont always need all of it but it also will take longer to write the extra methods..

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List Obsolete Classes / Methods In Msbuild

Jun 28, 2010

I have upgraded a visual basic 2005 project to visual basic 2010 (.net framework 4.0). I want to list all obsolete functions used in this project in order to change it with newer ones. How can I treat obsolete functions warnings as errors in visual basic 2010 ms-build?

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Handle Case Sensitive Classes And Methods From A C# Web Service In .net App?

Jun 22, 2011

I am working on a VB.Net application that needs to access a web service that I am nearly certain has a C# backend. At bare minimum, the backend is providing classes to me that are differentiated only by case, and within a number of those classes, there are properties and methods that are only differentiated by case.

VB.Net is case insensitive, and it sees a number of these items as being ambiguous.I've thought of a few ways of dealing with this, but I would like suggestions before I go down a road that is likely difficult.

Here are some ways I have considered going about it.Modifying the generated code for the wsdl. This has presented problems in responding as the xml output would no longer conform to the webservice requirements.I think there might be some attributes I could use to override this, but I'm not sure what they are yet. Even so, this web service gets frequent updates and I would hate to have to keep refixing the service every time I refreshed it.Creating a csharp wrapper project where I expose the underlying classes with different names. Primarily through inheritance. Although the big problem here has been the issue with properties and methods that are only differentiated by case as well.

I'm sure at some point I could get one or the other of these solutions working, but if anyone has any better suggestions that I'm not thinking of,

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Call A Member Through Its Parent's Type That Shadowed A Parent Class Implementation?

Aug 3, 2011

This is a challenging one that got me stumped while I was coding today. Suppose I am running the Sub Test1() and Test2() and would like to print out the value of the Shadows method of the instance of the object I am passing in to TestCall() (see below - it is clearer) using the following restrictions:

Can't change the contents of Class A, B, and C
Can't change Sub Test1() and Sub Test2()
TestCall() can't have an if, select case etc. statement that tries to figure out the type

[code].....

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What Are Classes , Objects , A Namespace , Subroutines,functions,methods,properties And Difference Between Byval And Byref

Jun 26, 2010

I want to know what are classes , objects , a namespace , subroutines,functions,methods,properties and differemce betweem byval and byref in your words.

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VS 2008 Cannot Call Methods On Char?

Mar 24, 2011

First time posting a question..I am trying to write to a table from a vb form and i am getting this message when executing the insertcommand:

Cannot call methods on char. The following is the code that i am using:

[Code]...

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Get A Value Inside Parent Class From Child Class (in Nested Classes)?

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]....

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Console App Timer To Call Web Methods Every X Minutes?

Dec 22, 2010

I am coding in VB.Net, VS 2008. I wrote a console app that consumes 2 web methods from a web site application. I need to enhance this console app so that it launches the web methods continuously, perhaps every x minutes (during business hours), but never before the last invocation has terminated, whose duration may vary, depending on how many accounts there are to process.

Originally, I scheduled the application using Task Scheduler, but I think this doesn't prevent two invocations at the same time.

Although I have seen many posts on using timers, I haven't found exactly what I need.

So far I have:

Dim aTimer As New System.Timers.Timer()
AddHandler aTimer.Elapsed, AddressOf TriggerWebMethods
' Set the Interval to 10 minutes:

[Code]....

When should Timer.Elapsed be used vs. Timer.Tick? What is the difference between Timer.Enabled vs Timer.Start, and should I be selecting just one? I would like the 2nd web method to kick off when the first one is done.

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What Rounding Methods Need To Call To Get The Preferred Results

Apr 12, 2011

I have 4 rounding options: None, Standard, Up, Down If they choose None and the number is 108.7879, I just want to display 108.78 with no rounding. I know I probably can use Math.Ceil for Up and Math.Floor for Down, but I am not sure what to use for None or Standard.

[Code]....

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Permission Denied / Cannot Call Non-public Or Static Methods Remotely

May 17, 2010

There are no "non-public" or "static" methods in my code. All are public. What I'm trying to do is pass a FrameworkElement (more specifically a web browser control) that was created in one process over to another process for display and use. Also I'm not using (and would to avoid using) any of the framework 3.5 addin stuff.[code]

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Call Namespace Wise Classes In 6.0?

Jun 19, 2009

iam creating Vb.net classes under the different namespaces after that build that source code,i got the Type Library file.but iam using the Assembly Name in VB6.0 iam not able to getting classes under the namespace wise.

eg: Dim A As New Test.A - It was possible

but iam using with one namespace like

Dim A As New Test.Utility.A

This was not working.

Dim obj As DynamicPDF.ReportDocumentLayout - it was comes correctly But,
Dim obj As DynamicPDF..ReportWriter.ReportDocumentLayout - Not comes like this.

Note:

ASP: it works fine.

Server.CreateObject( "DynamicPDF.ReportWriter.ReportDocumentLayout" )

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.net - How To Add Methods To DataGridView Class

Sep 14, 2011

my question is simple. How do i add methods to the standard DataGridView control of VB.NET

I want to add some methods of my own to the class, but i tried inheritance and i get errors. What are the techniques out there to extend native classes in vb net

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Can't Access Methods From Another Class

Dec 18, 2011

Example ^. I must be forgetting something or being really dumb.

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Class That Contains Overloaded Methods?

Jul 16, 2011

In this project I am making a grade calculator; I am modifying an existing code I have to have the following characteristics: I need to modify the DetermineGrade method so that it accepts the maximum number of points that can be earned on both tests (currently, the max number of points is 200: 100 points per test). For an A grade, the student must earn at least 90% of the total number of points. For a B, the student must earn at least 80%. For a C, at least 70%. For a D, at least 60%. If they earn less than 60% of the total points, then grade is F. Here is the exisint code I have for the DetermineGrade method specifically:

Public Sub DetermineGrade()
Dim intTotal As Integer
intTotal = _intScore1 + _intScore2

[code]......

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Use Derived Class Shared Variables In Shared Methods Of Base Class?

Jun 4, 2010

I am trying to add shared members in derived classes and use that values in base classes...

I have base

class DBLayer
public shared function GetDetail(byval UIN as integer)
dim StrSql = string.format("select * from {0} where uin = {1}", tablename, uin)
end function
end class

[Code]..

currently there is error using the tablename variable of derived class in base class but i want to use it i dun know other techniques if other solutions are better then u can post it or u can say how can i make it work? confused...

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Add / Implement An Interface To An Existing Class Without Changing Code Anywhere That Call The Class And Functions

Mar 1, 2010

I need to create unit testing project for my current website. The currentw ebsite si written in VB. All unit testing examples are using interface to create mock object. My current VB class does not implment any interface. Can I add interface and implement it to my current class and functions without affecting or changing codes to any pages in my website that call the functions? For examples my current class is like:

[Code]...

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Call Method Base Class In Program Passing Sub Class Objects?

Apr 22, 2012

Base class has one field to hold numeric balance value. With 2 methods that accept arguments for adding and subtracting the new input calculating new balance. Sub class has four fields dates, transaction, memo and amount.I have a deposit form, and withdraw form. Each time one transaction is entered it creates an object with sub class fields, then adds to the account collection. My problem is not understanding how to call the deposit/withdraw method and pass the current transaction amount back to the base class to alculate the new balance. Does anyone have any links to information/tutorials on how to perform something like this? As you can see with my code I have tried various different approaches without any success.

[Code]...

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.net - Class Definition Properties Or Methods?

Aug 4, 2010

I have a class definition that I've seen other define properties that return collections of objects.

Public Property GetAllAdults() as Adults End Property I made the argument that this should be a method in the class, because it doesn't define an attribute of the class, and could not be extended with parameters. Is/Are there reasons why this should be defined as a property vs. a function?

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.net - Expose Methods Of Nested Class?

Apr 23, 2012

I have a Public Class called "ClientConnection". Inside that class, I have a Public ReadOnly Property called "FileTransfers(ByVal TransferID)". The property returns an object of the class "FileTransfer". All methods in FileTransfer are set to public.

VS is able to discover the methods inside the parent class "ClientConnection". How would I expose the methods inside the sub-class "FileTransfer" that is returned by the property "FileTransfers(ByVal TransferID)"?

Public Class ClientConnection
'irreverent code removed
Public ReadOnly Property FileTransfers(ByVal TransferID As Integer)

[Code].....

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Add Methods To An Entity Mapped Class?

Jan 24, 2009

I have a database table called Job. I have mapped this table using LINQ to SQL so that I have a class called Job.

What I want to do is add some methods to the Job class. The Job class is defined in the LINQ to SQL classes .dbml file. So, in order to add methods, or anything else to the Job class what should I do?

Should I create a partial class named Job and define the methods in there? Will that then get mixed in properly? Not sure how to proceed on this one.

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Asp.net - How To Create Instance Of Class In Different Methods

Aug 3, 2011

Do I have to instantiate description every time for different method? Or should I use static? Here's how I'm doing this now: What is the best way of handling this kind of situations. it seems that I repeat this line:Dim description As BLLDescription = New BLLDescription() without any good reasn.

Protected Sub Button8_Click(sender As Object, e As System.EventArgs) Handles Button8.Click
Dim description As BLLDescription = New BLLDescription()

[Cdoe].....

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Derived Class Shared Methods?

Nov 3, 2010

I have a function that 2 derived classes use, but the third doesn't, would it make sense to just leave it in the base class, even though one of the 3 derived classes doesn't use it?The only way I could think of disallowing the third class is to basically create an intermediate class that is derived of the base, then the 2 that use the common function are derived off the second class.

Is it possible to prevent the 3rd class from using the function, while letting the two that are supposed to use it, use it?Does that just seem to go overboard, I mean as long as I don't "try" to call the function from the 3rd class, it shouldn't be a problem, I just was interested if there was a way to prevent it all together without a lot of hassle.

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Get Properties And Methods For Custom Class?

Oct 29, 2009

Is it possible to iterate through the properties and methods of a custom class, getting the details about those properties and methods in the process.[code]....

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How To Add Methods To An Entity Mapped Class

Mar 26, 2010

I have a database table called Job. I have mapped this table using LINQ to SQL so that I have a class called Job.What I want to do is add some methods to the Job class. The Job class is defined in the LINQ to SQL classes .dbml file. So, in order to add methods, or anything else to the Job class what should I do?Should I create a partial class named Job and define the methods in there? Will that then get mixed in properly? Not sure how to proceed on this one.

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