Private Set In Auto-Implemented Properties
Jun 11, 2009I'm going to resolve this bug as "Postponed" as we won't have time to do it for VS2010, but I'm definitely interested in your feedback going forward.
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VB10, Auto-Implemented Properties And COM?
Nov 30, 2010I recently finished a class that we're using to tie Access to some WCF Services. Of course this means that the .Net classes (and all of their properties) need to be visible to COM. Given that I'm using VB10 and the Contact class has about 20 properties I went ahead and used auto-implementing properties.Much to my surprise, the properties were not accessible from within VBA in Access. I tried marking the properties as ComVisible (which I didn't have to do in the past with standard properties) and it still didn't work. After changing the auto properties to standard properties everything worked.
Became
Public Property FirstName As String
Get
[code].....
.NET Auto-Implemented Properties - Compatibility Between VS2010 And VS2008?
Apr 29, 2011I am working on an ASP.NET project where I use VB.NET within Visual Studio 2010. Some of the other developers on the project are using Visual Studio 2008. We all check our code into single SVN repository. I would like to start using Auto-Implemented Properties within VB.NET ...
Property FirstName as String
instead of ...
Private FirstName as String
[code].....
My concern is that this could mess up things for those using VS2008. What would happen if someone using VS2008 needed to modify my class that made use of Auto-Implemented Properties? I am assuming that since everything compiles down to IL code then there would be no issue in binary compatibility. Though a problem would arise when editing source.
IDE :: VS2010: Enable Or Disable Auto-Implemented Properties?
Nov 10, 2011I have somehow managed to disable auto-implemented properties in my VS2010 IDE how to turn it back on. Almost every article on the internet loves to explain auto-implemented properties but doesnt give you the crucial option of how to turn it on or off.
View 2 RepliesWrite Private Set Auto-properties In VB 10?
Jun 9, 2009in C#: public string Property { get; private set; } in VB?
View 3 Replies.net - Why Can't Access The Backing Field On An Auto Implemented Property From Within An Inherited Class
Dec 20, 2011I have a class that exposes an auto implemented property Enabled
[Code]...
But If I had not use an auto implemented property and declared my own backing-field as follows this is accessible from the subclass: Private _Enabled as Boolean ---- EDIT ----
The abve line is incorrect - this is not possible, it was in fact Protected in the original code which allowed access from the sub class See @JonSkeet answer ---- EDIT Of course I can just access Enabled from the sub class to work around this but can someone explain why this is the behaviour?
INotifyPropertyChanged.PropertyChanged Implemented And Not Implemented; Visual Studio Build Error
Jan 2, 2012I'm seeing a strange build bug a lot. Sometimes after typing some code we receive the following build error.
Class 'clsX' must implement 'Event PropertyChanged(sender As Object, e As PropertyChangedEventArgs)' for interface System.ComponentModel.INotifyPropertyChanged'.
And
'PropertyChanged' cannot implement 'PropertyChanged' because there is no matching event on interface 'System.ComponentModel.INotifyPropertyChanged'.
Those error should never go together! Usually we can just ignore the exception and build the solution but often enough this bug stops our build. (this happens a lot using Edit and Continue which is annoying)Removing the PropertyChanged event and retyping the same code! sometimes fixes this.We're using a code generator that causes this error to surface but just editing some files manually triggers this exception too. This error occur's on multiple machines using various setups.
Declaring Private Variable - Automate Properties?
Sep 28, 2009I come from C# (use VS 2005, .NET 2) and I know that when I declare a private variable I can "extract" from it the corresponding "property". In VB.NET I've declared a lot of properties (in the diagram class designer). Now am I forced manually adding the corresponding private fields?
View 4 RepliesHow To Access Controls' Private Properties On Another Form
Feb 25, 2010I am trying to access the controls' properties on another form without having to modify the code of the other projec (the one containing the controls that I want to access) because it is already compiled as a DLL. In this DLL that I am trying to access, the functions/sub-procedures are all declared as private. Would there be any way of accessing the controls' properties without having to modify the DLL? Basically what I am trying to do is create a sort of console application wrapper for the DLL that would create a new instance of the DLL's form and then make certain checkboxes checked and click certain buttons. Basically, I am trying to automate the form as it currently exists.
View 7 RepliesProperties - .net Property Get And Set Values Without Private Variables?
May 4, 2012I am programmer from some time only, I have certain doubts in fundamentals, could you please clarify on the following:Case 1:
[Code]...
Does case 1 and case 2 yield same result, I mean is a private value necessarily in there?, can we use property itself to use its own value in its Set and get statements?
Copying A Set Of Private Variables Into Corresponding Public ReadOnly Properties?
Oct 18, 2011I have a bunch of private variables I've typed out and I want to put all of my corresponding Public ReadOnly Properties in a bunch below them.Is there some way of copying ten lines of
Private _myVar As String
and pasting in ten sets of
Public Readonly Property MyVar As String
Get
Return _myVar[code]....
I'm currently copying the whole bunch of variable declarations, Find+Replacing Private _ into Public ReadOnly Property then going line-by-line expanding the definitions and writing return statements.how to avoid all this nonsense in the future, as I'm developing on a virtual terminal server, and the input lag on my little copy/paste/type operations on the code is driving me up the wall.
Asp.net - Benifit/Advantage Of C# Property Properties - Private Access Modifiers For Setters?
Jan 25, 2012Below is the class with a property.
public class abc
{
public int MyProperty { get; private set; }
}
What's the benefit of typing private access modifier in setter ?
Use INotifyPropertyChanged With Auto-properties?
Jul 27, 2010Is there a way to use INotifyPropertyChanged with auto-properties? Maybe an attribute or something other, not obvious to me.
public string Demo{
get;set;
}
For me, auto-properties would be an extremely practicall thing, but almost always, I have to raise the PropertyChanged-event if the property value has been changed and without a mechanism to do this, auto-properties are useless for me.
Mvc - Can Auto-Mapper Map Static Properties?
Apr 19, 2011Given the two classes below, can I map the ApplicationSettings to the AppSettings?
Mapper.CreateMap(Of ApplicationSettings, AppSettings)()
Mapper.Map(Of ApplicationSettings, AppSettings)(ApplicationSetting.Load)
Public Class ApplicationSettings
[code].....
IDE :: Lost Auto Hide Option On The Drop Down And Properties Menus?
Oct 30, 2010I have lost the auto hide option (greyed out) on the drop down solution and properties menus. The Toolbox still has the auto hide option. I cannot find the pin to set auto hide on the Solutin and Properties menus.
View 3 RepliesVS 2008 Sharing Variables - Private Sub Could Use The Variable Created On Private Sub
Jul 23, 2010if for example i have two private sub I declared a local variable on private sub a... is there a way that private sub b could use the variable created on private sub a? Im asking because im in a problem in my app were using global variable is not an option to make the long story short
View 5 RepliesWhat’s The Difference Between Private Sub And Private Function
Dec 14, 2011I am completely lost on procedures. Whats the difference bewteen Private sub and private function?
View 1 RepliesC# - How Is Hash Implemented In .NET
Aug 3, 2010[Code]...
The garbage collector in .NET moves objects, so the object's address is not stable. How is Object's GetHashCode() method implemented?
How Can The UrlNormalizer Be Implemented
Nov 27, 2009I found the line in a program that references UrlNormalizerUtil.UrlNormalizer to validate a url. It calls it from a GeneralPurposeUtilities file which is added to the project properties in references as a .dll file.
My question is: where does this file come from? Is is self coded or from some library? how else can the UrlNormalizer be implemented?
.net - Implemented Interface Needs Casting?
Jan 12, 2011I have an Entity class which Implements IWeightable:
Public Interface IWeightable
Property WeightState As WeightState
End Interface
I have a WeightCalculator class:
Public Class WeightsCalculator
Public Sub New(...)
..
End Sub
Why can I not do wc.Calculate(entities)? I receive:
Unable to cast object of type
'System.Collections.Generic.List1[mynameSpace.Entity]'
to type
'System.Collections.Generic.IList1[myNamespace.IWeightable]'.
If Entity implements IWeightable why is this not possible?
Have Implemented IEquatable Correctly?
Mar 18, 2012I saw the question posed here: Have I implemented Equals()/GetHashCode() correctly? but my c# is not as strong, and I am unfimiliar with IEquatable enough that I would like to see this in VB.NET if possible please.My example code (The class will eventually use INotifyPropertyChanged when I get there):[code]
View 2 RepliesWhy Would Compiler Think An Interface Isn't Implemented When It Is
Apr 9, 2010I've boxed in red. The class displayed here does implement INotifyPropertyChanged, but the VB compiler seems to think that the PropertyChanged event as declared does not match the signature of INotifyPropertyChanged.PropertyChanged.Here I've selected the offending line of code. Between this and the next screenshot I literally just cut and paste the exact same line back into the file (i.e., I hit Ctrl + X followed by Ctrl + V).I have this happen sometimes, particularly with the INotifyPropertyChanged interface in my experience but I have no idea if the problem is limited to that single interface (which would seem bizarre) or not.Let's say I have some code set up like this. There's an interface with a single event. A class implements that interface. It includes the event. [code] Every now and then, when I build my project, the compiler will suddenly start acting like the above code is broken. It will report that the Person class does not implement INotifyPropertyChanged because it doesn't have a PropertyChanged event; or it will say the PropertyChanged event can't implement INotifyPropertyChanged.PropertyChanged because their signatures don't match.This is weird enough as it is, but here's the weirdest part: if I just cut out the line starting with Event PropertyChanged and then paste it back in, the error goes away. The project builds.
View 2 RepliesXML Embedded Expressions Implemented?
Sep 4, 2009Can someone explain the nuts and bolts of what's really going on under the covers?
View 1 Replies.show Method Or Operation Is Not Implemented?
Jul 18, 2012I am programming an ordering site in VB.Net and ASP.Net.I start with the main ordering form and the idea is that the user will select a subject from the drop down list and then click a button to retrieve all modules associated with that subject in a second form (smaller than the main order form).I have created the second form (frm2) and added content to it.In the main form inside the method which represents the button being clicked, I have coded the following:
Dim frm As New frm2()
frm.show()
I then get an error that show has not been declared and so I create a method stub for it.I run the program and when I click on the button I get the following error:'method or operation is not implemented.'This points to the following line in the 2nd form:
Sub show()
Throw New NotImplementedException
End Sub
what I need to put inside this method to make my second form load when the button is clicked?
Interface Be Implemented Across An Aggregate/composite Class In .net?
Mar 30, 2010VB.NET .NET 3.5 I have an aggregate class called Package as part of a shipping system. Package contains another class, BoxType . BoxType contains information about the box used to ship the package, such as length, width, etc. of the Box.
Package has a method called GetShippingRates. This method calls a separate helper class, ShipRater, and passes the Package itself as an argument. ShipRater examines the Package as well as the BoxType, and returns a list of possible shipping rates/methods.
What I would like to do is construct an Interface, IRateable, that would be supplied to the helper class ShipRater. So instead of:
[Code]...
However, ShipRater requires information from both the Package and its aggregate, BoxType. If I write an interface IRateable, then how can I use the BoxType properties to implement part of the Interface?
ReadOnly Property ListView In ListViewItem - How Is Implemented
Nov 30, 2009how ListView pointer is stored/removed at ReadOnly Property ListView in ListViewItem? How is it implemented? I know ListViewItems are stored in ListViewItemCollection which has constructor New(owner as ListView) but I dont know how pointer to ListView is add/remove in ReadOnly Property in ListViewItem...
View 1 RepliesVS 2008 IPodServiceLib - Method Or Operation Is Not Implemented?
Jun 23, 2009im messing around with this trying to get into my ipod touch the code i found here and there on the net doesnt quite work..Imports IpodServiceLib
Public Class Form1 Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
[Code]...
VS 2010 Comments On Strategy Pattern Implemented
May 18, 2012a debate has been sparked here about the use of the strategy pattern in my classes.
Basically, I have a 'Shape' object that is an interface 'IShape'. We have 'Circle', 'Rectangle' and 'Elongated' that are the concrete classes that must implement the IShape interface.
[Code]...
VS 2010 Dll That Is Implemented By A Class With A Default Constructor
Dec 27, 2010I have a base class which must be overriden. This base class sits in one dll shared by all. The derived classes will each be in their own dll such that the addition of a new derived class can be done by distributing a new dll. The set of dlls, and therefore the set of derived classes, will be discovered by the main program on startup. That's all pretty straightforward. The problem is that the main program needs to be able to query a database to figure out which type of derived class it needs, then create a class of that type. Naturally, it can't know which types will be available ahead of time because even I don't know that. The program has to be dynamically extensible.The obvious way to do this is to have an interface in the dll that is implemented by a class with a default constructor. The sole purpose of that class would be to return an object of the type (one of the derived types) defined in that dll. The derived types can't really be this class, because they can't have a default constructor since the base class doesn't have a default constructor, and the derived class can't make up the arguments that the base class constructor needs.
So basically, each dll that houses a derived class would also house a simple class that implemented an interface for the sole purpose of creating that particular derived class. The main program would examine the dll to find a class that implemented the interface, and once it found one, it could ask it what type of class it created, or it could ask it to create an instance of that class. It seems like there ought to be an easier way to dynamically add new classes to the project. It seems like the derived class ought to be able to tell the main project what type it was. This could be done, except that the derived class would have to exist before any of its methods could be called unless the methods were shared. Since you can't have a shared method in an interface, the interface itself would make no sense at that point, in which case I would need to discover whether the class in the dll derived from the base class in the second dll, just to figure out whether or not I wanted to create it. That's getting convoluted by now, so I guess I'll leave it there. The basic point is that the base class is known to the main program from a common dll. The number and types of derived classes can't be known at this time, so the program has to be able to discover them dynamically. Each derived class will sit in its own dll (or there could be more than one in a dll), and has to be discovered, and instances created, as needed, by the main program.
Why Is The VBCodeProvider.Parse Method In VS2005 Not Implemented
Mar 17, 2011Why is the VBCodeProvider.Parse method in VS2005 not implemented? Is there an equivalent function?
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