Access A "private Virtual" Property Starting With Underscore Through Reflection?
Apr 10, 2011
I was trying to access the following property using Reflection because I don't have the original source code (suppose this was decompiled through Reflector). It seems that something is special about it being "private virtual" or maybe because it has "_" in the beginning of the property. I can access all the other private properties no problem except this one. Just can't figure out what I am doing wrong:
private virtual String _MyProperty
{
get
[code]......
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Jul 15, 2011
I was trying to access the following property using Reflection because I don't have the original source code (suppose this was decompiled through Reflector). It seems that something is special about it being "private virtual" or maybe because it has "_" in the beginning of the property. I can access all the other private properties no problem except this one.
private virtual String _MyProperty
{
get
{
[code]....
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Aug 27, 2009
I searched on the forum / Internet for the solution how a PropetryInfo object (of a Public property) can reveal if it has a Private Protected Setter ... it was all in vain .... all help I found was about how to "Set" value of a public property having a Private Setter.I would like to know if I have a PropertyInfo object of a public property, how would I know if its Setter is Non Public?
I tried, in a exception handling block, where I did a GetValue of the PropertyInfo object and then called SetValue by setting the same value back... but to my surprise it worked well and didn error out.
[Code]...
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Jan 28, 2010
I am trying to use fluent nhibernate in a MVC project. It seems the entities should have properties that are virtual and the set should be private for IDs. I use vb language. So tried using overrideable. It gives an error...
Public Overridable Property DesignId() As Integer
Get
End Get
Private Set(ByVal value As Integer)
End Set
End Property
It says property cannot be overrideable because it has a private accessor.
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Mar 12, 2010
Is there a way for a property to access its own name and type at runtime using reflection? I want to access this info without hard coding the name or index of the property in the class.
Simple Example Code:
Private ReadOnly Property MyProperyName() As String
Get
Console.WriteLine((Get Current Property Info).Type.ToString)
Console.WriteLine((Get Current Property Info).Name)
[code]....
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Jan 25, 2012
Below 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 ?
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Sep 13, 2010
I want to retrieve private (implementation and other) methods of a class which implements an interface and also is derived from (inherits) a base class.How can I achieve this using reflection?This is wat m tryin to do. I need to view these private methods and their contents, I don't want to invoke them.
Dim assembly As System.Reflection.Assembly
Dim assemblyName As String assemblyName = System.IO.Path.GetFullPath("xyz.dll")
assembly = System.Reflection.Assembly.LoadFile(assemblyName)
assembly.GetType("myClass").Getmethods(Bindings.NonPublic)
assembly.GetType("myClass").GetMethods(BindingFlags.NonPublic) isn't working
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Jan 5, 2012
Is it possible to call a protected method via reflection. I am using this:
Me.GetType.InvokeMember(Stages(CurrentStage),
Reflection.BindingFlags.InvokeMethod,
Nothing,
Me,
Nothing)
Which always calls a method with no params or return. The idea is that the user of my object (transactional processing of business logic) inherits the base class adds in a load of private methods to fire. They then add these method names to a list in the order they would like them fired and the code above will take care of firing them.
It works fine with public methods but not with private or protected methods in the same class (Protected because I have some 'standard' pre built methods to add to the base class). Realistically I could make the methods public and be done with it but my inner nerd wont allow me to do so...
I am assuming this is a security feature. Is there a way to get around this or does anyone have any suggestions on how to proceed but keep my tasty, tasty visibility modifiers in tact?
(NOTE: ITS IN VB.NET but a C# Answer is fine if that is what you are comfortable with).
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Nov 26, 2009
Well its simple here you have my vb.net code:
Public Class Class1
Public Overridable ReadOnly Property Name() As String
Get
Return Nothing
[Code]....
(It dosent print nothing it just prints an empty line) Why does vb.net go for the base class implementation when its overriden?
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Feb 6, 2010
I have a form with 2 radio buttons where the "checked" property is false, yet when the form loads the first radio button is selected. I tried .refresh and no positive results... Grrr! Also, the ampersand in the "text" property is not showing the underscore during runtime. This is with the entire project.
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Jan 26, 2012
I Like .NET automatic properties, in C# it so easy to declare readonly property by declaring its set section as private like this:
public String Name{ get; private set; }
But when I tried that in VB.NET I was shocked that it is not supported as mentioned here and I have to write it as follows:
Private _Name as String
Public ReadOnly Property Name as String
Get
[Code].....
What the difference between these declarations in VB.NET, which one is preferred and Why?
Which one will affect compile time, runtime or performance at all?
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Feb 9, 2010
How to get property.value from reflection.assembly?
Dim assembly As Assembly = assembly.GetExecutingAssembly()
For Each assemblyType As Type In assembly.GetTypes()
If assemblyType.IsSubclassOf(GetType(Form)) Then
[Code].....
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Oct 6, 2010
I am trying to get the value of local path by doing the following[code]...
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Apr 14, 2010
I know its unlikely but I was wondering if there is any way to get the comments (i.e. the bits after the ''') of a class or property..? I have managed to get a list of properties of a class using the PropertyInfo class but I cant find a way to get the comments / description.. I need it for a guide I am writing for the administrators of my site - it would be great if it could automatically update if new properties are added, so there is no need to worry about updating it in the future too much.
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Feb 23, 2012
I am retrieving several properties of a control. Here is how I used to retrieve properties (with pinfo of type PropertyInfo):
value = pinfo.GetValue(obj, nothing)
That worked well, but now I am facing a property that has a optional value, and I get an error message telling me that the number of parameters is incorrect. So I changed my code by this one:
Dim index As Object() = {Nothing}
value = pinfo.GetValue(obj, index)
At this point, I didn't get any error message, but this code doesn't retrieve the good value. It only works if I replace Nothing by the default value provided by the property accessor...
But I don't know in advance what this default value is! And this code is within a function that retrieves properties that doesn't have optional values, so I cannot change the code especially for one case or another..
I am working on .NET 2.0
EDIT: More precisions about the case leading to the problem
Here is an example of property leading to the problem:
ReadOnly Property Foo(Optional ByVal Number As Integer = -1) As String
Get
If Number = -1 Then
[Code]....
With this kind of property, none of the codes above retrieve the good string.
My best guess would be to try the first code for general purposes, catch the appropriate exception, and then dynamically retrieve the default value of the parameter (Number in that case) and its type, so that I can call getValue with this default value.
So, How can I retrieve the default value of the optional parameter?
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Jul 19, 2011
How to get the object description using reflection. I can get the name, value, etc... but not the decription like in .net.For example the description for .Text is "Gets or sets the text associated with this control." I thought maybe using MethodInfo, but does not give the description.
Dim MethodObj As MethodInfo
Console.WriteLine("Methods:")
For Each MethodObj In GetType(TextBox).GetMethods()
Debug.Print(MethodObj.Name & " " & MethodObj.ReturnType.ToString())
Next
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Jan 2, 2010
When I got a fieldsinfo-array of a class I know all of it's fields. Now, how can I access all of the fields of an instance of the same class by using the fieldsinfo-array? [code]I'm sure there exists a possiblity to get the value of the instance, but how?
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Sep 15, 2010
This function loops all properties of an object to create the updatequery to save te object to the DB.
We had to make some changes to it because of the introduction of nullable properties. If the property is nullable we would like to check the 'HasValue' property. This does works when it has a value. When the property has no value we get an 'Non-static method requires a target'-error at the CBool-line
An other way to check the 'HasValue'-prop of a property using reflection?
Private Function GetUpdateQuery(ByVal obj As Object, ByRef params As List(Of SqlParameter), Optional ByVal excl As String() = Nothing) As String
Dim sql As String = String.Empty
[Code].....
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Sep 22, 2009
is there a way to have the Get part of a property available as public, but keep the set as private?Otherwise I am thinking I need two properties or a property and a method, just figured this would be cleaner.
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Apr 25, 2009
I just stumbled over this in some C# code...:public Foo Foo { get; private set; }
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Jul 24, 2010
I'd like to have a Private or Protected "Setter" for a property that also happens to be an abstract (MustOverride). I'm porting some code from C# to VB and in C# this is pretty straight forward. In VB not so much (for me anyway).
Some code...
In C#...
public abstract class BaseClassWithAnAbstractProperty
{
public abstract int AnAbstractIntegerProperty { get; protected set; }
}
[Code]....
The issue seems to be the inability to flesh-out the Get/Set specifics in the declaration.
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Jan 3, 2010
I'm using VS2008 and have created a dll with the following
Public Class Test
Private privatesampleProperty As String
Public Property SampleProperty() As String
Get
[code]....
From what I can see this should not be visible outside the class...
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Jan 12, 2012
Is it possible to set a variable in my custom class for Private Read/Write access and Public Readonly access without creating Properties with Get and Set? In other words, from within my class I want full access and from my form I only want read access. Right now I declare my variable as either Private or Public to control Public read/write access. I tried googling my question a bit but I'm not sure what the correct terms even ar
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May 4, 2012
I 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?
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Feb 23, 2009
Can i have a property that is Readonly for Public but can Read/Write in Private?
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Dec 30, 2009
When referencing class properties from a function within the class do you use the value from the actual property or the private variable value?
public class
private m_Foo as double
public property Foo() as double
[Code].....
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May 21, 2011
In VB.NET, what are the advantages of using the Property keyword rather than:[code]Coming from Java I tend to use this style rather than Property...End Property - is there any reason not to?
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Nov 10, 2011
I have inherited a large project written in a mixture of C# and VB.Net
The project involves many separate assemblies.
There are hundreds (or thousands) of resources (png files) that have been inserted into the project using the VB My.Resources functionality that I would like to access from some C# code, in a different assembly.
Microsoft has a KB article about this. It includes some sample code, but I can't get it to work (and I can't quite follow the code).
// Gets a reference to the same assembly that
// contains the type that is creating the ResourceManager.
System.Reflection.Assembly myAssembly;
[Code]......
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Jan 28, 2009
.net - Using reflection in C# to try and access My.Resources
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Jan 14, 2010
Testing out a VB.net prog in Windows 7 that works ok in Vista and earlier. The users can set various options and save them for next time. In pre Vista this goes in the program directory in program files, in Vista it is transparently put into the user's virtual store.However, in Windows 7 trying to save the file gives an access denied error although the virtual store exists as for Vista and other apps appear to be using it ok.
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