Way To Overload A Property In .NET?
Feb 10, 2010
I've done plenty of Method Overloading, but now I have an instance where I would like to Overload a Property. The IDE in Visual Studio seems to allow it, since I can actually set up the two overloads, but I get an error saying it is not valid because they only differ in type. I think I'm missing something in my syntax?I want to be able to use two (or more) different custom classes as the Type for my property.
Public Overloads Property myFlexibleProperty() As myCustomClass1
Get
Return _myFlexibleProperty1
[code].....
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Feb 11, 2010
I'm trying to create a property that will allow the setting of a last name based on a variety of inputs. The code that calls this is parsing a name field.In some instances it will have a single last name, in others, a array of last names that need to be concatenated. I want to keep my concatenation code in a single place to make maintenance easier.[code]I've tried numerous variations on this, even putting multiple Set in the same Property, but nothing seems to work. There must be some way to take in an array and a single instance value. The compiler clearly knows if the incoming object is an array or not.I tried working with just a property of type String(), but then I can't return a String. The only solution that I can think of is differently named properties, which makes using the class more difficult, or a whole bunch of Subs and Functions overloading each other.
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Dec 9, 2011
I'm having some very weird issues with interfaces right now.
I have a very simple setup. In one of my class, I have a Property implementing a Property from an Interface.
In my class it's like:
Private _oForm As IForm
Public Property Form As IForm Implements IContainer.Form
Set(value As IForm)
[Code]...
I have like dozens of interfaces like this working throughout my project and I can't believe this simple one can't work!
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Mar 4, 2012
What I am doing is generic and has been done a thousand times, but I can't figure out how other programmers do this.
I am working with the Law of Sines to return an angle of A. There are two combinations, for instance:
Return Angle A given (side b, side a, angle B)
Return Angle A given (side c, side a, angle C)
----Note: All together there would be six, two for each angle)----
I can't overload the functions because the signatures are not unique. The parameters and return type are primitive type Double.
The use of Aliases works for reading the code but does nothing to resolve my issue.
One approach I thought of was to create a structure for each side and angle; however, I don't want to create any more complexity than needed.
Another solution could be using a strategy design pattern?
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Apr 19, 2009
1)When we use Overload constructors in a class
2)and which one is get execut first.
Public Class remoteobj
[Code]...
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Mar 1, 2009
I am trying to pass multiple signature calls to an overloaded function. My understanding is that VB can recognize the different signatures and use the appropriate function.[code]...
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Oct 12, 2009
if it is possible to overload or override (not sure about the difference) functions in a modual.vb.
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Mar 12, 2012
I'd like to do a kind of overload of the actions in the controller.
Is it possible? 'Cause I havn't found any info about it. And when I tryed, I got this error.
The current request for action 'Create' on controller type 'InterviewController' is >ambiguous between the following action methods:
System.Web.Mvc.ViewResult Create() on type
[Code]....
I've tryed few things to get what I wanted. The last one was to copy what was done in the "Edit" action, but for an empty rank. (so I created an empty rank in my DB). I don't think it was a good idea (imagine someone wants to update the DB where idOpportunite = 5...)
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Mar 17, 2009
i have this piece of code (which is part of Unolib)
Private Sub Saveonefile(ByRef fl As Sockets.TcpListener)
Dim Client As Sockets.Socket
Dim name As String
Dim buffer(PacketSize - 1) As Byte
[code]....
there are actually 3 errors, but they are all like this one?
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Oct 15, 2009
I want to have use several versions of the same property within a userControl that inherits a textbox. How can do this if it is possible?I tryed using an object data type insted of the integer and double but it seems like object datatypes carnt be used within a class, because when I tried to use the control the VALUE property was disabled.
'PUBLIC PROPERTIES
Public Property Value() As Integer
Get[code].....
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May 8, 2011
Anyway, I figure my code is all messed up, but I still don't understand this error message.Also, s there a website, that I can get the definitions of the error messages that VB throws out?
Sub Main()
'declaring variables
[code].....
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May 11, 2010
Modifying a program in VB.NET 2003. Need to open a streamwriter object. Here's the trouble line...
Dim objWriter As StreamWriter = New StreamWriter(strHandle).where strHandle is the path and name of a file.
The StreamWriter(strHandle) portion is underlined as an error. The pop up says "Overload resolution failed because no accessible 'New' can be called without a narrowing conversion:"
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May 25, 2009
I recently got a vb book, and the operator overloading sample is quite confusing. understanding why you need to overload an operator, and what's the simplest example?
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May 3, 2012
I am having a problem convincing Visual Studio and the compiler to use the correct method overload, possibly because of inheritance.
Given these objects:
Public Class Matrix
...
End Class
[code]....
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Aug 26, 2011
I want to catch the event of deletion, renaming or copying a file in Windows Explorer. For example, if a folder contains the files "test.a" and "test.b", and that I remove "test.a", then my program will remove the two (same for copy and rename).I know how to add an entry to the context menu of Windows. But the goal isn't to add functionality to Windows. The goal is to redefine an existing function.
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Jan 10, 2011
Is there a way to use CodeDom to generate an overloaded operator in Vb.net? I want to generate this:
Public Shared Operator =(ByVal x As MyType, ByVal y As MyType) As Boolean
Return x Is y
End Operator
The closest hack I can think of to do this the following:
Dim eq As New CodeMemberMethod()
eq.Name = "Operator ="
eq.Parameters.Add(New CodeParameterDeclarationExpression(New CodeTypeReference("MyType"), "x"))[code]....
Which generates this, close but obviously wrong:
Public Shared Function Operator =(ByVal x As MyType, ByVal y As MyType) As Boolean
Return (x Is y)
End Function
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Feb 9, 2011
I created my own Dictionary class, based on the .NET Dictionary. Now I want to overload then Item() Method. This works fine with the following code: Public Overloads Property Item(ByVal key As TKey) As TValue
[Code]...
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Jan 23, 2012
I am attempting to use multithreading in one of my VB programs for the first time in attempt to make it more efficient.I have some code that starts the thread but I get an overload resolution error.When initialitzing the thread I am calling a boolean function and not a Sub, but I am not sure if that is the problem.I think the problem may be that the class in which I want the thread to start in has Option Strict Off while the class initalizing is set to Option Strict On.I will post my error and the code which is causing the error. '[code]
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Jul 5, 2009
I use MVC a a programming pattern, in Win apps i simply pass the form to the controller. [code]...
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Jul 2, 2011
I am working on this project and I am suppose to overload the method to allow strings instead of integer. Allow the user optionally add a thried string from a third text box. Okey I am trying to under stand this good. This is the code I have:
This is my overload class
Public Class OverloadEx
[CODE]........................
So with my overload class instead of integer I should put string there? If the user clicks the add button it will allow the user to add all 3 text boxes but when the user click the add string it will allow the user to add all three text boxes to string. So do I click the add string button to overload it to that one just like I did with the add?
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Mar 1, 2010
I need to overload a method in a windows control does anyone know how to get me started .... oh er missus.
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Feb 22, 2012
i recently stumbled across an error "overload resolution failed because no acceptable fields accepts this number of arguemnets"ive spent an age researching and cannot for the life of me work out what it means, or what exactly the problem is If anyone can enlighten me i would be extremley grateful.
If it helps ive posted part of the code below and highlighted the part which is causing the error in bold
Private Sub UserForm_Initialize(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
[Code]...
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Jan 8, 2010
Is there anyway to add an overload "extension method" to a method that already has one or more extension methods?For example theString.Contains method has two extension methods totalling 3 separate versions.Is there anyway to add an extra extension method also called "Contains" ?By the way I have tried it but the IDE does not seem to recognise additional EXTENSION methods where a method already hasone or more extension methods.Is there anyway around this restriction?In other words I would like to be able to change the Extension method below from"Contain" to "Contains" but it seems it is not recognised.
Option Strict On
Public Class Form1
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles
[code].....
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Sep 9, 2009
the Threading.Interlocked class provides; I don't understand, though, why the Add function only offers two overloads: one for Integers, another for Longs. Why not Doubles, or any other numeric type for that matter?Clearly, the intended method for changing a Double is CompareExchange; I am GUESSING this is because modifying a Double is a more complex operation than modifying an Integer.
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Jun 12, 2012
Error 4 Overload resolution failed because no accessible 'Where' can be called with these arguments:Extension method 'Public Function Where(predicate As System.Func(Of System.IO.FileInfo, Integer, Boolean)) As System.Collections.Generic.IEnumerable(Of System.IO.FileInfo)' defined in 'System.Linq.Enumerable': Nested function does not have a signature that is compatible with delegate 'System.Func(Of System.IO.FileInfo, Integer, Boolean)'.
Extension method 'Public Function Where(predicate As System.Func(Of System.IO.FileInfo, Boolean)) As System.Collections.Generic.IEnumerable(Of System.IO.FileInfo)' defined in 'System.Linq.Enumerable': 'HasFlag' is not a member of 'System.IO.FileAttributes'.
[code].....
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Oct 3, 2011
I have an interface that implements the ICloneable interface with the following method declaration Overloads Function Clone() As Object Under this interface is an abstract class "Animal" with:
[Code]....
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Mar 10, 2010
I'm trying to multi thread for first time and I'm getting this errorError1Overload resolution failed because no accessible 'New' can be called with these arguments:
'Public Sub New(start As System.Threading.ParameterizedThreadStart)': Method 'Private Sub WebBrowser1_DocumentCompleted2(sender As Object, e As System.Windows.Forms.WebBrowserDocumentCompletedEventArgs)' does not have a signature compatible with delegate 'Delegate
[code]....
The code works fine without multi threading?
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Feb 10, 2010
I'm writing a custom DataGridView object for a large project to hand out to a bunch of developers to make our app sections look consistent. I want to set defaults for many of the properties of the DataGridView, and I can set many of them like this:
<System.ComponentModel.Browsable(True), System.ComponentModel.DefaultValue(DataGridViewAutoSizeColumnsMode.Fill)>_
Public Overloads Property AutoSizeColumnsMode() As DataGridViewAutoSizeColumnMode
Get
Return MyBase.AutoSizeColumnsMode
End Get
Set(ByVal value As DataGridViewAutoSizeColumnMode)
MyBase.AutoSizeColumnsMode = value
End Set
End Property
These properties overload with their defaults just fine. Its when I started trying to make default Cell styles that I ran into the issue. Since the DataGridViewCellStyle is a class, I cannot make a constant out of it. I've tried changing all of the settings to what I want them to be in the class constructor, and that works great, except that changes made in the designer properties just get set back as soon as the app runs. So putting the changes in the constructor won't do. Is there anywhere else I can put code that only runs when the control is first dropped on the designer? or any other way of setting a default?
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May 8, 2009
I have written a method to replace multiple characters in a string. Is it possible to overload my own method to the existing method "Replace" in the String namespace?
Function Replace(ByVal inValue As String, ByVal ParamArray replacechars() As String) As String
For i As Integer = 0 To UBound(replacechars) Step 2
[Code].....
As you can see it have a different signature from the public method so I think it would be nice to have my method overloading the existing method
I can live with it if it isn't possible. See it as a "nice to have"
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Apr 9, 2011
Every one I want to Overload Operators for Matrix Operation in Vb.net I am trying it to do, but as i am new to VB.net
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