How To Know Which Constant Apply With Perticulare API Function
Oct 13, 2009IF i want to use some API function than How can i know that this function required constant value?
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Named Constant For InputBox Function
Sep 8, 2011I don't know if this is the right place to start, but I'm using Visual Basic 2010. I'm doing the IMY Solution. Basically I'm calculating the new hours for each pay. The inputBox function allow users to enter the raise percentage. The problem for raise percentage is how can I set the name constant correctly. It asks to create a named constant for the "Raise percentage: " message.
Here is the code
Option Explicit On
Option Strict On
Option Infer Off
Public Class frmMain
' class level variable to enter percentage
[Code] ......
Passing A Constant Array To A Function?
Jul 23, 2009pass an array to a function, like the code below shows
Private Sub SomeFunction(ByVal PassedArray() As String)
For i As Integer = 0 To PassedArray.Count - 1
Debug.WriteLine(PassedArray(i))
[code]....
But is there a way to pass a constant array to a function in VB .Net, for instance in PHP you could write
function SomeFunction($array)
{
for($i=0;$i<count($array);$i++)
{
[code]....
So to reiterate: Is there any way to pass a constant array directly to a function in VB .Net? Is there any benefit in doing so? I imagine a few bytes of memory could be spared.
PS.SomeFunction({"some", "array", "member"}) ' this obviously gives a syntax error
Create Constant Using Attend In Function Of DLL File?
May 15, 2012Here is the code I am using.
Imports System.IO
Public Class FrmCap
'Create constant using attend in function of DLL file.
Const CAP As Short = &H400S
Const CAP_DRIVER_CONNECT As Integer = CAP + 10
[code].....
Apply OpenFileDialog Function To A WebApplication?
Mar 11, 2011I am devoloping a Web Application, in which one Page has some neccessity that User should select any folder in the System and for ex if he selects ex:D:xyz, then this Path should be Saved in Database, I have written the Code for Storing in to Database and Remaining Every thing. But actually i think that if it is like a Browse Button click function to select the Folder, what i have made is, as i dont know how to make it in Web Application simply i used a textbox to be able to user to type the Path.
View 5 RepliesPublic 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.
Pass An Optional Parameter To A Function Of Type System.Drawing.Color - Error "Constant Expression Is Required"
Mar 22, 2012I want to pass an optional parameter to a function of type System.Drawing.Color. The problem I am having is that when I declare the function it says "Constant expression is required" but I have tried variations of the following, including integers, full qualified indentifiers, even old vbWhite constants to no avail.
[Code]...
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 ©
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?
View 1 RepliesDisplay 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?
Possible To Declare A Dynamic Constant?
Nov 13, 2009I have situation where I read a source file, create a temporary text file of the source and modify the temp file. If I open the file twice it appends to the end of the first temp file even though Ihave StreamWriter append set to false. Only if I close and reopen my application does it not append. It like there is buffer or something not getting cleared.Below is the syntax I'm using.
If OpenFileDialog1.ShowDialog() = System.Windows.Forms.DialogResult.OK Then
Using objReader As New IO.StreamReader(OpenFileDialog1.FileName)
[code].....
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.
Use A Keyword As A Constant In An Enumeration?
Jan 19, 2011I would like to use a keyword (reserved word) as a constant name in an enumeration.The reason I care about the name is I set a ListBox.DataSource to the .GetValues of the Enum Type.This way the list of constant names show up in the list box and the ListBox.SelectedValue can be tested to determine which constant value has been selected.What I would like to be able to do is as follows:
Enum
Style
As
Byte
[code]....
This was an attempt to override the Name property from S to Single However I get a pre-compile error stating: "Too many arguments to 'Public Sub New()'."
.NET 2010 Constant Errors - Bugs?
Jun 21, 2010I am getting these constant annoying errors in Visual Basic .NET 2010 Express. I'm pretty sure I'm not the only one, but these errors are always relating to images and resources The Type 'Global.ExampleProject.My.Resources.Resources' has no property named 'example.png'I am pretty sure these are bug, due to the fact that I get these errors after a while in most of my projects - it's absolutely annoying! Most solutions include removing the resources (commenting them out of the form designer code) and re-importing them... But then the problem comes back again after the project has been loaded a few times!
Microsoft suggest this is rather a user-related issue rather than a bug due to the fact that they can't reproduce the error.I'm still sticking to the belief of this being a bug - anyone get this error alot of the time?This is not the only bug I get - sometimes VB stops working when I try to build my projects!
Assign A Color.fromargb Value To A Constant?
May 5, 2009Is there a way to assign a color.fromargb value to a constant?
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