Difference Between Enum And Constant?
May 13, 2009What's the difference between enum and constant?Are they useful in real-life programming? or do they exist solely to make coding more tidy? Do they serve any real purpose?
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Put Spaces In A C# Enum Constant?
Jul 13, 2009Is there any way to put spaces in a C# enum constant? I've read that you can do it in VB by doing this:
Public Enum EnumWithSpaces
ConstantWithoutSpaces
[Constant With Spaces]
[Code]....
That implies to me that the CLR can handle an enum with spaces.
Create A Enum Or Enum Type Functionality Witch Return String (enum Returns Int) In .net
Dec 30, 2009I have a URL lets say . some time i need to send HTTP and some time i need to send it to HTTPS for that i created a enum:
Private _protocol As Protocol
Enum Protocol
HTTP
HTTPS
[CODE]...
Now when i get value back from protocoltype it returns me integer value as enum do so tell me how to get string from enum or other substitute.
Dim targetUri As String = setting.protocolType & "://www.mysite.com"
Access Of Shared Member, Constant Member, Enum Memberor Nested Type Through An Instance; Qualifying Expression Will Not Be Evaluated?
Jun 23, 2009i changed a class variable to shared so i can access it in all instances of the class, but it caused an error. what is causing this, and how can i fix it?
Private
Shared img As Bitmap
Me
.img = bgImage
Access Of Shared Member, Constant Member, Enum Member Or Nested Type Through An Instance; Qualifying Expression Will Not Be Evaluated
Jun 2, 2011how do I overcome it? I have created a class and compiled into .dll This code
[Code]...
Access Of Shared Member - Constant Member - Enum Member Or Nested Type Through An Insta
Aug 13, 2009In Visual Studio 2008, if I do this:
[Code]....
Does anyone here know how to get the above to work WITHOUT warnings being generated?
Warning 1: Access Of Shared Member, Constant Member, Enum Member Or Nested Type Through An Instance; Qualifying Expression Will Not Be Evaluated
May 31, 2010In the following code i get a warning at line 59:Warning 1: Access of shared member, constant member, enum member or nested type through an instance; qualifying expression will not be evaluated.and.. At line 78 I get this Warning:
Warning 2 Property 'SelectedCustomer' doesn't return a value on all code paths. A null reference exception could occur at run time when the result is used.
The program compiles and runs well, but i cant' undesrtand the reason for these warnings. Any Idea ?
1: Public Class Form1
2:
3: 'Form level members
4: Private objCustomers As New ArrayList
[code]....
VS 2005 Access Of Shared Member, Constant Member, Enum Member?
Apr 28, 2011Cannot appear to be able to get this function to not have the above error.Private Function GetIncidentActions(ByVal FromAgentID As Integer, ByVal ToAgentID As Integer, ByVal incidentAction As Integer, ByVal ActionDate As Date) As String
[Code]...
Public Constant Versus Private Constant?
Aug 13, 2011When building a class library which contains many classes, all classes uses a lot of common constants and functions, what is the best to do:
1- Declare these constants and functions as public in a module.
2- In each class declare constants and functions used by individual class as private.
The first choice is good for easy and fast implementation, but re-using a class in a different project will require importing the module to the other project.The second choice require a lot of copy/paste for code snippet but a class can be re-used in different project easily.
Enum Item - Protected Name - Statement Cannot Appear Within An Enum Body
Mar 25, 2011I'm trying to declare an enumeration and one of the names I'd like to use for an item is not usable apparently. Where I am declaring 'STEP = 3', I get this error message in visual studio: "Statement cannot appear within an Enum body. End of statement expected." Is it possible to use STEP as an item name somehow? [Code]
View 4 RepliesENum Names And Values Don't Match For Same ENum
Jan 2, 2012RE - FilesystemRights Enum
This Code:
Dim FSRS As Type = GetType(FileSystemRights)
For Each fsr As String In [Enum].GetNames(FSRS)
TextBox1.AppendText(fsr.ToString & vbCrLf)
Next
Nullable Enum Verse Enum.None?
May 26, 2010Which is better, using a nullable enum or adding the value None=0 to your enum list?Using nullables requires more code, but I kind of like it since it forces me to think about the possibility. Otherwise I'm liable to forget about the None enum and fail to account for it being a special case.
View 11 RepliesSearch An Enum Value Inside Of An Enum?
Aug 23, 2011I've tried the code below but it always returns nothing, It should enter
Protected Function GetTotalDebitAmount(ByRef roEntryDetailRecordBaseList As List(Of PPDEntryDetailRecord)) As String
Dim iTotal As Integer = 0
[Code]....
I need some one who evaluate the part below:
If CBool(Array.IndexOf([Enum].GetValues(GetType(TransactionCodes.Debits)), CInt(oEntryDetailRecord.TransactionCode)) > 0) Then
C# - Declaring Hex Constant In .net?
Apr 20, 2012How can I convert the following code into VB.Net?
private const UInt32 temp = 0xE6359A60;
I tried the following but it doesn't work.
Public Const temp As System.UInt32 = 0xE6359A60
Declaring Pi As A Constant?
Apr 12, 2011visual basic 2008 express
' the following lines declare the variables and constants
Dim intDiameter As Integer
Const dblPI As Double = 3.14159
Const dblAREA As Double = 140125
Dim intLabel As Integer
Private Sub PizaSliceCalculator_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
[Code]...
I made a working program to calculate piza slices, i was told i needed to declare pi and the areas as constants. when i rewrote the program it no longer works. the result keeps coming back as 0.
Getting A Constant From A Form
Mar 13, 2010I am looping through all of the forms in my app, and I am needing to get a value from the form somehow.Example, say if I have the form named "This Form" and somewhere in that form, dont know if you can use the tag property for this or not, but I need to put a word like "Tall" for an external reference to the form.[code]"How do I get another value like the forms tag or something else".
View 5 RepliesGravitational Constant ?
Jan 10, 2010Explain or send me in the right direction.
View 2 RepliesUse String As A VB Constant?
May 17, 2012I have strMyColor = "Red".I would like to make lblMyLabel.BackColor to be red.Without using a variable the code would be this:
lblMyLabel.BackColor=Color.Red
I tried using the variable like this: lblMyLabel.backcolor="Color." & strMyColor
But the error is that a string can't be converted to System.Draw.Color. I understand that, as the string "Color.Red" is not the same as the VB constant Color.Red.Is there a way I can construct a valid vbConstant from a string?
Can't Declare Constant In Namespace?
Dec 25, 2009I mean why? I mean to organize things I often turn modules into classes where all the methods are share.But then I thought, why not organize them into namespace?But then we can't declare constant in namespace.
View 10 RepliesConstant Cannot Be Target Of An Assignment
Jun 12, 2011i am making a program on visual basic 2010 and part of my objective is to calculate the tax, i am trying to calculate the TAX so this is part of my code and this is the only part which gives me errors:[code]
1. Constant cannot be target of an assignment
2. value of type 'string' cannot be converted to 'System.windows.forms.Lebel'.
Constant Expression Is Required
Apr 14, 2011I'm trying to make following subroutine work. The problem is this part of the statement.[code]I've tried everything and can't seem to come up with a constant to use here.[code]
View 3 RepliesConstant Expression Is Required?
Apr 27, 2010I have created a program that creates a blank database in a users account (each user has a seperate folder when registered) by pressing a command button, i have got it to create the database but when i try to populate it with a table to go to the correct folder i get an error
Constant expression is required
the code im using for this is:
Const strConnection As String = ("Provider=Microsoft.Jet.OLEDB.4.0;" & _
[code].....
Constant Values For Windows?
Jun 25, 2009where i can find out constant value used to control the windows. like i'm using wndproc to disable validation and i use constant value for closing of form and that value is &HF060&
i was also looking for constant value for leaving the form. is there any place where i can find out these values?
Constant Window Flashing?
Jun 16, 2011Alright, So i have two forms open. One in a listview and i have another window with a browser control in it. The browser is adding data to the listview but i made it so it hides while doing this using Me.Hide(). I can make it appear if i click the menu item "Show browser" i made.when im on Form1 (the listview) and its doing its thing with the browser window hidden. It keeps making form1 flash. Well not flash but like the browser window is poping to the front (while hidden) causing me not to be able to click on anything on Form1.This happen everytime the web browser navigates somewhere.Making Form1 always on top fixes it, but it also gets on top of other programs like my web browser . I want it to be on top only to the web browser.
View 1 RepliesDeclaring Constant On VB 2010?
Feb 11, 2012Having problem declaring constant on Visual Basic. rents is $200 per hour and is charge by minutes this is what I have so far.
const TOTAL_CHARGE_GROUP as Interger = 200 ©
Display A Constant Value In Text Box
Sep 7, 2011I want to display a constant value in a text box. I have a constant of 2% calculated and the function works ok - as planned but i would like to display the tax rate of 2 % in the form at the time of calculation.[code]
View 5 RepliesHow To Use Constant In Structure In VB 2008
Aug 8, 2009I want to know that how we access a constant which is declared in a public structure, with an instance of that structure?
View 7 RepliesIDE :: DesignTime Compiler Constant?
Jul 26, 2011I need some of my initialization code to be blocked off if I am in Design Mode. This code is ran in the new method of the form, so it runs before the DesignTime Property can be set. Is there, or is there a way to setup, a compiler constant which indicates whether or not you are in Design Time. The Debug Constant doesn't work because when I run the application in Debug mode I want it to run
View 14 RepliesKeep A Constant Table Size?
Nov 23, 2010I currently have a table that has a few hidden text boxes... The text boxes become visible when certain actions are performed.
The table though changes size according to when the textboxes are visible or now. Ex. When the textboxes are visible the table grows, and vice versa.
Magic Number Vs Constant?
May 11, 2012I save a lot of settings in an INI file as 1 (enabled) and 0 (disabled), all around the project's module i have this check If setting = 1 then ' do somethingEnd If ' OR If setting = 0 then ' do somethingEnd If
My question, is it good for performance to declare public constants to hold 1 & 0 and use them in such above checks instead of using real number?
In general, if i use value like 8, 9, "", "$", etc... in just two different places, should i declare constant for it?