I'm getting this error when trying to implement an interface in vb.net:
Public Interface IFoo
ReadOnly Property Foo() As String
End Interface
[Code].....
The following works in C#:
interface I
{
int X { get; }
}
class C : I
[Code]...
The error message Implementing property must have matching 'ReadOnly' or 'WriteOnly' specifiers is pretty self-explanatory, so I do know what's wrong here. It's also not a big issue, because it's quite easy to work around this limitiation. I'm curious, though: Does anyone know why the VB designers decided to treat this case differently than in C#?
I have the following
Imports System
Imports System.Collections.Generic
Imports System.Drawing
Imports System.Linq
Imports System.Windows.Forms
[Code] .....
But I am getting this error:
Error1Class 'DemoPlugInTwo' must implement 'ReadOnly Property name() As String' for interface 'Interfaces.IPlugins'. Implementing property must have matching 'ReadOnly' or 'WriteOnly' specifiers.C:Documents and SettingsOwnerMy DocumentsVisual Studio 2008ProjectsDemoPlugInThreeDemoPlugInThreeDemoPlugInThree.vb1420DemoPlugInThree
I am getting similar errors for the other property and method. I have them set as read only.
I have created a solution where no problems occur when debugging. After copying the complete solution to another folder i cannot debug this solution. I receive an error "Public Property DisplayName As String' and 'Public ReadOnly Property DisplayName As String' cannot overload each other because they differ only by 'ReadOnly' or 'WriteOnly'." in the web.g.vb file. I deleted the web.g.vb file and build the solution but this does not solve the problem. (The original solution debugs withoud any problem)
View 6 Replieshow can i solve this error in my code i have access database and i need to connect to it and that was done but when i was trying to add new record it gives me the below error Error 1 Property 'Item' is 'ReadOnly'.
cn.Open("Provider=Microsoft.Jet.OLEDB.4.0;Data Source=data.mdb;")
rs.Open("sec", cn, ADODB.CursorTypeEnum.adOpenDynamic, ADODB.LockTypeEnum.adLockOptimistic)
[Code]....
I get the Error Property 'Chars' is 'ReadOnly'
View 3 RepliesI have a procedure that basically bubble sorts players based on the value of dice thrown by the player as follows...
Function PlayingOrder() As Boolean
Dim i As Integer
Dim blnSwap As Boolean
[code]....
Update2 my answer to my question. Update I updated the code per @Eddy comment below, however I'm still getting an error on the myRange = Globals.Sheet...line.
Dim xlDown, i As Int32
Dim myRange As Excel.Range
myRange = Globals.Sheet1.Application.Transpose(
Globals.Sheet1.Range(
[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 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
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!
I am having a Friend Class InterceptingChannelBase class.It has a property as below:
Protected ReadOnly Property InnerChannel() As TChannel
Get
Return Me.innerChannelT
[code]....
This class is being inherited by (Friend Class InterceptingInputChannel) class which in turn contains another (Private Class TryReceiveAsyncResult) class.The property above is being used in this private class as below:
Public Sub New(ByVal channel As InterceptingInputChannel(Of TInputChannel), ByVal timeout As TimeSpan, ByVal callback As AsyncCallback, ByVal state As Object)
MyBase.New(channel, callback, state)
[code]....
I am getting the error on the above underlined statement saying that Protected Readonly Property InnerChannel is not accessible in this context because it is declared asa Protected.As far as i think,if i declare a property in class as 'Protected' then if this class is inherited by 'another' class then i can use this property and it should not throw an error.
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.
when building my application I am getting some temporary files shown in Solution Explorer under Miscellaneous Files lie App_Web_YDKG.VB with following code block in that generating error
Protected ReadOnly Property Profile() As System.Web.Profile.DefaultProfile
Get
Return CType(Me.Context.Profile,System.Web.Profile.DefaultProfile)
End Get
End Property
Error : Error 58'Protected ReadOnly Property Profile() As System.Web.Profile.DefaultProfile' has multiple definitions with identical signatures.C:WINDOWSMicrosoft.NETFrameworkv2.0.50727Temporary ASP.NET Filesinfinityvb2ae71c27d560144bApp_Web_pwduczex.38.vb456
I'm making a program that allows me to drag and drop an image to a picture box. But I get this error when using the dragenter event. Here is the code:
e.AllowedEffect = DragDropEffects.All
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]....
my project is a Conversion from VB6 to VB.Net just opened the code VB6 class file in VS2005, it converted all the properties & functions but gives an error saying "Property 'Item' is ReadOnly"
VB6
Public Property Let Variable(ByVal vFieldName As Variant, ByVal new_value As Variant)
Dim tmpFieldName As String
tmpFieldName = vFieldName
[code]....
m_Memoryvalue is a collection. "Private m_MemoryValue As New Collection"
I'm teaching myself vb.net and found this VB.NET SMTP codeand I wanted to add a mail.cc and mail.bcc but get an error Property cc is ReadOnly.and don't know how to fix. then I found this code
Dim CC As MailAddress = New MailAddress(TextBox5.Text) 'For some reason it's required field
mail.CC.Add(CC)
[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 been toilign away for several days on a program. I have chosen to start form a fresh with it (using much the same code). However I am continuely being givent he following errors.
Expression is not a method. Line 17
Expression expected Line 17
Array bounds cannot appear in type specifiers. line 31
Here is my
Public Class Form1
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Dim Processor(5) As String
Dim Clock(5) As Single
[code]....
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 have a question thats been bugging me for quite some time now.Recently, I've created a ButtonRow control which is meant to host several buttons on its surface. These buttons are added through a collection property using the property grid of the VS IDE. The property is tagged with the DesignerSerializationVisibility(DesignerSerializationVisibility.Content attribute.The objects in this collection are serialized to the designer code of the form or usercontrol on which the ButtonRow is placed. Now it all works fine and everything except that I cannot implement a Name property. I'll explain what I mean by this.
If you've ever used the DataGridView control, you'd notice that the columns work in the same way that buttons work for my control ie a serialized collection. However, the DataGridViewColumn has a Name property which can is used as the variable name when the column is serialized into designer code.
Example: If you place a DataGridView on a form and add a column and change its Name to lets say "AGreatColumn" then the designer would serialize the column as such:-
[Code]...
I went as far as using .Net reflector to decompile MS source code to see how they may have achieved this but I could not find the secret. Also notice that the designer serializes my objects using a Dim statement but the DataGridViewColumn uses a Friend Withevents declaration at the bottom of the designer code file(I didnt it included above)
I'm currently trying to create a class that is a composition of the SqlDataAdapter class (as unfortunately you can't inherit from it). In order to try and make it as similar as possible I'm using all the same inherits and interfaces as is documented on MSDN.The problem that I am having is that there are some properties where the interface specifies that the type of the property is IDbCommand. But in the SqlDataAdapter the property type is SqlCommand.
View 3 RepliesI 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.
I am trying to design a table type structure that contains rows and cells. I intend the cell class to have a value property. I'm trying to work out how I can create a value that can return some defined different types e.g integer, single, date, string. I'd like the cell value to be strongly typed, but I am unsure how best to get this working.
My thinking in code so far:
Public Class Cell
Private _value as object
Public Property Value as Object // How can I define this so that it return a Type
Get // e.g. integer, string, etc
Return _value
[Code] .....
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 RepliesHow would one invoke a readonly property?
ListView1.SelectedIndices.Count
THis is a line of code i have, it's a code to go at the bottom of a document and the title of the question is the error it has, how do i change the 'Chars' to not be read only? I can only guess 'Chars' is a character.
pagecode(1) ="01274-6759q-DDD"
If you're not living on the edge, you're taking up too much room
i have this code to build datagridview column. I will fill this coulmn with the data from another column (I have done it) But now, I want it so that the table property READONLY: TRUE and the column TOTAL_PRICE to have $#.00 format.
Public Class columnLoader
Public Sub New(ByVal system As String, ByVal quantity As Integer, ByVal description As String, ByVal totalPrice As Double)
[Code].....