Implement - Public ReadOnly Property Within A Class
Feb 24, 2009How does one implement something as Public ReadOnly Property within a class.
CODE:
How does one implement something as Public ReadOnly Property within a class.
CODE:
I have created a class called clsLogIn [code]Now I am on a different form, frmSchedule, and I want to get the ProviderNum property from clsLogin into a text box.
View 10 RepliesI have a class like this
Public Class Settings
Private _app_folder As String = ""
Public Property AppFolder() As String
[Code]...
But how can I edit "_settings.AppFolder" property to "readonly" ?
Can i have a property that is Readonly for Public but can Read/Write in Private?
View 4 RepliesArgument not specified for parameter 'index' of 'public readonly default property chars(index as integer)as char'. Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
[Code]...
One of my ASP.NET websites makes use of the CultureInfo class to format currency values and normally this works fine. However, some new code is causing some unexpected problems. In the code sample shown below, txtBox1 correctly displays £99.00 while the line that specifies a value for txtBox2 generates the following error,Too many arguments to 'Public ReadOnly Default Property Chars(index As Integer) As Char'.The key difference in the txtBox2 value is that it is derived from a SQL Server database reference using Linq-to-SQL (CurrentUKFees.Print1). The relevant database value is the integer 8 and I was expecting txtBox2 to show £8.00. If I delete the CultureInfo code then txtBox2 correctly shows the value '8' without any currency formatting.[code]
View 1 RepliesI was using a data bound combo box pretty well before, now on my new project i get this error:
Public ReadOnly Property DataConnectionString() As String
[code]...
Configuration system failed to initialize System.Configuration.ConfigurationErrorsException was unhandled
This is in Settings.Designer.vb I'm using VB2010
Error1 Too many arguments to 'Public ReadOnly Default Property Chars(index As Integer) As Char'.K:\VB\Chap06\SumOddEven Solution\SumOddEven Project\Main Form.vb2645SumOddEven Project
Private Sub calcButton_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles calcButton.Click
Const prompt As String = "please enter even and odd numbers click cancel to end"
Const Title As String = "odd & even Number"
[code]....
I am trying to use the right function in VS 2008. I am simply trying to get the right 5 characters of a string.
VendorID = Right(cboVendors.Text, 5)
I am getting an error when I type that:
Error1'Public ReadOnly Property Right() As Integer' has no parameters and its return type cannot be indexed.
i get this error?
' Create the order and store the order ID
Line 175: Dim orderId As String = ShoppingCartAccess.CreateCommerceLibOrder(shippingId, taxId)
[code].....
i get the following error in the follwoing code , the word right is underlined in blue and the error is "1'Public ReadOnly Property Right() As Integer' has no parameters and its return type cannot be indexed."
Declare Function GetHDDSerialId Lib "HardDiskInfoV1.dll" () As String
Declare Function LoadLibrary Lib "kernel32" Alias "LoadLibraryA" (ByVal lpLibFileName As String) As Long
Public Function SetHardDiskID() As String
[code]....
why by the way i got this code of some one else , i am trying to read my HDD Serial number but i don't know how i need the code to read it in vb 2008.
lI think I almost have this done but I get and error "'Public ReadOnly Property Right As Integer' has no parameters and its return type cannot be indexed." here is the line causing the error:
[Code]...
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
View 5 RepliesI was wondering if someone could explain to me the differences between these 2 ways of accessing a class property.Access Way : 1 (To me this looks like im declaring the property of the class as a Global variable which can be changed anywhere
[Code]...
I am using a PropertyGrid control to edit my class properties and I am trying to set certain properties read-only depending on other property settings.This is the code of my class:
Imports System.ComponentModel
Imports System.Reflection
Public Class PropertyClass[code].....
This is the code I am using to edit the values:
Dim c As New PropertyClass
PropertyGrid1.SelectedObject = c
The problem is that when I set SomeProperty to True, nothing happens and when I then set it to False again it sets all properties Read-Only.
I am trying to create a property of type string array (if this is possible).....and I seem to be lost.
I tried the following, but it says "String cannot be converted to '1-dimensional array of string'" at the return
Private _strZipList As String()
Public Property strZipList(ByVal i As Integer) As String()
Get
[Code].....
I have a nullable public property on a class using Vb.net 3.5:
Public Property TicketCharge() As Nullable(Of Decimal)
Get
If _TicketCharge = Nothing Then
[code]....
I am working in VB.NET defining my own classes. I have 5 classes, Policy, Coverage, CoverageCollection, Layer, and LayerCollection. Policy has a bunch of data items, one of which is of type CoverageCollection. Coverage has a bunch of data items, one of which is of type LayerCollection.
Policy
private id as Long
private name as String[code].....
Then I do like "dim p as Policy". So, iIn order to get to properties on a Layer, I reference it like p.cov(0).lyr(0).face. What I am trying to do is add a readonly property to Layer that is calculated using some Layer information but also using something from Coverage (or even Policy). I can take this in as a parameter to the property, but I think there should be a way to get at Coverage/Policy information since I am "under" it already. Is there a way to do this?
Is there a way for implementers of an interface where a ReadOnly property is defined to make it a complete Read/Write Property ?
Imagine I define an interface to provide a ReadOnly Property (i.e., just a getter for a given value) :
Interface SomeInterface
'the interface only say that implementers must provide a value for reading
ReadOnly Property PublicProperty As String
End Interface
This means implementers must commit to providing a value. But I would like a given implementer to also allow setting that value. In my head, this would mean providing the Property's setter as part of the implementation, doing something like this :
Public Property PublicProperty As String Implements SomeInterface.PublicProperty
Get
Return _myProperty
[code]....
Conceptually it seems like a derived class should be able to override a readonly property with a read write property. Why isn't this possible?
[code]...
I have a public readonly variable in a module, but when I try to set it in my form load event for the first time I get 'ReadOnly' variable cannot be the target of an assignment. It is my understanding that a ReadOnly variable can only be set once and after that you would get an error when setting it.
View 2 RepliesI'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!
I 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.
I can access a module from code behind but not from the aspx page in inline VB code <% ... %>.
View 2 RepliesImports System
Imports System.Threading
Imports System.ComponentModel[code]....
how to declare "smsport" on class smscomms as public so that it can be access in class form1 or button1_click event.
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?
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]...
I have a user control and I'd like to give it a custom property named ReadOnly. I get "Keyword is not valid as an identifier", as it thinks I'm writing a ReadOnly Property named something.
so really I can call mine 'Read_Only', but I'm just curious if there's an easy way to get the other name in there, since then my control will be similar to the visual controls that have ReadOnly in the designer.
is it possible (and how) to make a readonly automatic property in VB 2010?
Public Class Foo
Public Property Value As Integer
Public Sub New()
[code]....
problem is that users can write to the property.
It seems that VB.NET and C# readonly keyword have some differences... Say, a ReadOnly property in C# can be assigned in some conditions, but in VB.NET - never?
View 2 Replies