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]....
How to set Nullable Property in vb.net like "public decimal? unitprice {get; set;}"
View 2 RepliesHow 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 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 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].....
The following compiles in VB.NET (with Option Strict On) and outputs False:[code]Why does that work?The documentation clearly states that the three-argument version of If requires a Boolean as the first parameter:[code]So, why does this work? Is it a bug (or "hidden feature") in the compiler or is it a bug in the documentation and Boolean? is actually a valid type for the first argument of If(a, b, c)?In C#, b ? x : y does not compile if b is of type bool?.I've reported this issue to Microsoft Connect. Someone from MS has replied and confirmed that the documentation will be updated to include the Boolean? case.
View 4 RepliesDim nullInt As Int32?
Console.WriteLine("1: " & nullInt) 'has no value
nullInt = If(False, Int32.Parse("12345"), Nothing)
Console.WriteLine("2: " & nullInt) 'has value 0?
nullInt = If(False, Nothing, Nothing)
Console.WriteLine("3: " & nullInt) 'has no value?
I 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" ?
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 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 am creating a setup project for my VB application. Everything seems to look fine. However when I tell it to build the solution I get the following error:Property 'keycode' is non-nullable. I have never seen this before in other setup projects and I can't find any help from MS.
View 8 RepliesIn the below sample code, I have tried to use Nullable(of T) for DateTime and I want to use it same of the Dimensions property which is List(of Dimension).
CODE:
I was under the impression that any time I set a Nullable(Of Something) to Nothing, it will take the value of Nothing.In a class, I have;
Private _something As Nullable(Of Double)
Public Property Something() As Nullable(Of Double)
Get
Return _something
End Get
[Code]...
In my page, using this class I set Something = Nothing, but as I step into the Set method, value = 0.0.Am I doing something wrong here? Or do I just not understand Nullable types yet?
I have Nullable properties in my class:Public Property FileStatusID() As Integer?
Get
Return m_FileStatusID
End Get
[code].....
I generally use VB.Net for programming but I have been delegated to a VBA project that would benefit from using script control for running script. Here is sample code but errors out on the .Run line of code. I can do this in VB.Net easy but can't get it to work in vba.
ERROR = Wrong number of arguments or invalid property assignment
Option Explicit
Dim sc As New ScriptControl
Sub RunFunctions()
[code]....
Using the .Eval function from the script control object runs ok in vba but does not run scripts.
Sub SimpleTask()
Dim expr As String
sc.Language = "VBScript"
[code]....
I tried to build my project but it has 1 build error
:Property 'Keycode' is non-nullable.
I double click it but it points nowhere. I'm really desperate. My project consists of Crystal Report. It had just been upgraded from version 8.5 to version 11. Is it possible that this is the source of error?
I have a custom class that simply contains a public variable X.Let's say I have two instances of the class, A and B.If I execute an assignment operator, such as:A = B then I want A.X equal to the VALUE of B.X.But, I'm pretty sure that this will just assign B to the variable A.Assigning pointers, in C++ lingo.I looked in the VB.NET docs, which state that "The operator can be overloaded only as a relational comparison operator, not as an assignment operator."
View 7 RepliesThis 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].....
[Code] Now the problem is that after i put this user-control in a form, I have to set a value for the Handled file. Otherwise it gives me a value cannot be null exception. Is there a way that i can set code that would execute in the case of the value being null? [Code]
View 14 RepliesI'm trying to finish an assignment for my Introduction to Visual Basic class. I have to program an application that will determine if a word entered has consecutive letters in the alphabet as a substring of itself. Three examples are T"HI""RST"Y, AF"GH"ANI"ST"AN, and "STU""DE"NT.This is what I have so far:[code]....
However, it doesn't run properly. It says I'm trying to refer to a location that is out of bounds, although I don't see why.
I am working on a programing project for my college class. The program is working fine except when it graphs the data on the panel it flickers and doesn't always do it smoothly. I'm sure there are more efficent ways of doing this, but this is what my class specifically wants. Also, it must run on the timer otherwise I would have made it calculate without delay. Here is the
Program
Public Class Form1
Dim n As Double
Dim myGraphics As System.Drawing.Graphics
[code]....
I have written a .Net 4.0 Winforms Numeric Editor control (which inherits from TextBox), and I have added a Value property that is a nullable decimal type, as follows:
Public Class NumericEditor
Inherits TextBox
Private _value As Decimal? = Nothing
[code]....
how to get around this exception, particularly when I'm databinding a number field to a number property, and there should be no string conversion happening. (To further complicate things, I'm using a similar technique for another control where I databind a DateTime field to a nullable DateTime property, and that control works just fine.)
I want to created a nested class that can only be visible to and instantiated from the parent class.But I also want to be able to use an instance of the nested class through a public variable of the parent class.I tried making the nested class private, or making the nested class' constructor private, but it won't compile.Is it possible to do this in .NET?
[Code]...
I can't make difference between public class and private class and friend and protected friend class.
View 1 Replieshow to declare an internal class within a public class using vb.net?
View 2 RepliesI'm posting this there is a relationship with my previous post [URL]
I have two projects, namely:
1. Project1 (Windows Application)
2. Project2 (Class Library)
in Project2 there are several classes:
* frmLogin.vb
* frmCustomer.vb
* clsGlobals.vb
in my case, I want to frmLogin.vb and frmCustomer.vb not called in Project1 and I can only call is clsGlobals.vb
I need to convert the following code, so that it exists as a created class "Payroll" that utilizes "Get" and "Set" elements. Unfortunately, I'm completely lost.
Public Class frmPayroll
Private Sub frmPayroll_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
[code].....
I Want to make a class accept string variable like this
Dim mystring as custstring
mystring = "test var"
like how we declare string classes I tried to use property as such
Public class cust
dim inputstr as string = ""
Public Property cust() As String
Get
[code]....
But it doesn't seem to work?
