I'm creating a UDF in VB.NET that sometimes works with currency, which I would need to use the Decimal format in VB. But sometimes I working with time or just a plain double. What methods are out their for determining how I should add the values up, with a decimal or double? I prefer not to have excel return the actual range for simplicity sake but will do if I need to determine if it is formatted as currency.
View 1 RepliesI am practicing for my next semester, trying to get ahead in VB.Net, so I got a library book and I am attempting the book exercises, in this exercise I need to replace the currency format to the To.String format, but everythiing I try doesnt work, and everything I read online just confuses me more, can anyone shed light on why my code is not outputting my discount amount and my total amount?
Dim subtotal As Decimal = Decimal.Parse(txtSubtotal.Text)
Dim discountPercent As Decimal = 0.25D
Dim discountAmount As Decimal = Math.Round(subtotal * discountPercent, 2)
Dim invoiceTotal As Decimal = Math.Round(subtotal - discountAmount, 2)
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I have a value $17.50 as a string..how would i convert it to a double 17.50?
View 2 RepliesI have the following code,
txtCaseworkCost.Text = _CaseworkCost.ToString("C")
For some reason, the output in the text boxes looks like this,
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I am trying to create a currency converter that will convert currency. I have a text box to enter the amount and 2 combo boxes to choose which currency you are converting from and to.
I am using a webservice site XML that contains the conversions.
The problem is I cannot get the display to work properly.
This is the original code in c#
public class CategoryRepository: RepositoryBase<Category>, ICategoryRepository
{
public CategoryRepository(IDatabaseFactory databaseFactory)
: base(databaseFactory)
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Does anyone has an idea what i should change to let it work and let my UserRepository use the methods in RepositoryBase while implementing the IUserRepository?
I am working with a vb program, but there is something strange on one of my .vb code pagewhen i put the "dot" afther the object name its dont show the methods availables for this objectbut on other vb code pages i can see it. but in this one no.for exmaplethis is a piece of code: Dim sb As New StringBuilder()
View 3 RepliesI am not sure how clear my question is by the title, but I am trying to make Class methods instead of Instance methods in Visual Basic that way I don't have to waste memory and code creating temporary objects to execute methods that don't need instance variables.
I am not sure if you can do that in VB but I know you can in Objective-C by using either a "+" or "-" sign in front of the method declaration. And in C++ (at least I think, I can't remember) you put the static keyword or const keyword in front of the function.How would I do this in VB if it is possible? Or should I just make a separate set of functions that are not members of a class?
I have a situation where I am handling both single & double mouse click events on a form. In both cases something has to be loaded, however when a double click occurs, I do not wish to execute the code attached to the single click event.Is there a way to intercept the mouse click's and check if double or single and then execute the right event appropriately?
View 2 RepliesI have a htpc project that I am working on. The main program loads dll plugins which are basically other win forms. On each of these forms, including the main program, I use a picturebox (a double buffered picturebox) for the background image and then draw everything on it by hand. Whenever I load the form from the dll and show it, I get a weird flicker. It looks like it is the previously used double buffer. Is there any way to clear the background double buffer before the flicker? Or am I going in the wrong direction?
Here's a couple of videos of the problem:
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Notice the black screen with the white lines on it or the flash of the desktop after I click "Movies." How do I get rid of that?
For greater accuracy I should use a Decimal instead of a Double ( so I've been told ). Why then have Microsoft chosen to use DOUBLE for most of the functions that return a floating point value in the Math Class?
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In vb.net, im using objWriter.Write("playerA= "x"")as you can see im using double quotes inside double quotes, how do i skip it so the error doesnt show up?in php you make an "" to skip the string like ("playerA = "x" ")
View 6 RepliesPublic Class Form1 Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load Dim someproc As Process
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When i use VB6 i get the following outputs
961.605 * 100 = 96161
936.495 * 100 = 93650
929.295 * 100 = 92929
NOW..... When i do the above in vb.net 2005 i get the following
961.605 * 100 = 96160
936.495 * 100 = 93650
929.295 * 100 = 92930
How can i get the same output as the VB results. And i have tired it ! Type conversions, math functions, everything i can think of to get the same VB6 output !
I am writing a simple program to perform a task at work. It is an update application that will allow end users to update software themselves.I have come up against a problem though. In order to fully complete the installation, the latest service packs have to be installed. The machines are either running XP or 2000 and need updating to the latest service packs.The problem is I cannot find any code that will let me determine the service pack, all I have is:
HTML
MsgBox("Computer's operating system version: " & _
My.Computer.Info.OSVersion)
This finds the OS version, but I don't seem to be able to determine the SP from it. What I need to do is make a piece of code that will find the OS and SP, and then download the latest SP.The service packs are as follows: 2000 needs SP4 and Rollup 1 and XP needs SP3. I value will need to be returned and then stored to create and IF statemenet, but I am stumped on how to find the SP.
In my code behind I'd like to be able to tell that I'm running my web site project in Visual Studio (either Debug or Release).I was considering testing for "localhost" but that's not perfect because we could be testing it locally on the server.
View 3 RepliesIs there any easy way to determine the IP address for the computer that an app is running on. I looked through the System.Net namespace and didn't see anything of the sort.
Basically, I want to display the IP address to the user, instead of walking them through how to do an "ipconfig". They then can put that IP address into another app, so the one app can talk to the other via UDP.
I have a dataset that is filled by a tableadapter and what I'm trying to do is to figure out how to loop through all of the rows in my dataset and determine when someone hasedited/changed the row and then
View 2 RepliesI have written simple code to determine country location using the suffix on the url eg..cn, .se, .br etc. even if its possible to determine country or location using urls that end in .com or .net? I was just reading up on something and found online apps that can determine location/country from the ip so how would I determine the ip or look it up using the url? can I do this in .net?
OK
So I have the following code and I get an exception when the url is invalid or faulty, can anyone help me to catch the error and add the url to another list and continue with my loop.
Public Sub getIpAddress(ByVal querylist As ArrayList)
Dim IPList As New ArrayList
Dim badList As New ArrayList[code].....
My current situation is a brain teaser for me, and I wish I could provide code that I have tried but quite frankly - i have no idea how to even start. So this is my situation; I have a tab control, this tab control holds the names of Departments for a Lay-Away manager. The user has the option to click a static tab, "New.." and add a new department. When that happens, the new tab controls name is added to the settings, and a new list-view is created, and named "lst & DepartmentName". The problem is, I have no way of knowing when the Double_Click event of the this list that may, or may not exist happens. I have a method of determining which list is currently active, working with a timer to set a certain value the name of the list, sort of like
Dim lst = GetAllList(TabControl1.SelectedTab)
cList = lst.Item(0)
Considering there is only one listview per tab, it will always be 0. So, question is - How could I determine when that particular listviews Double_Click event happens ? Then I will use it to call a certain Button_Click event?
Through ACL I could restrict access to a directory in an NTFS-Formatted USB, what I want to do now is to be able to check if any virus/malware tried to infect my folder so I will know if it is safe to unlock the folder in that machine, is there any way in .Net that I can do this?
View 1 RepliesHow can I determine which box a user has chosen from the points array I stored it in? EX:
Points.add(box1)
Points.add(box2)
Points.add(box3)
User selects box2
How can I determine from the points array(x) which box he chose?
im using VB 2008 is it possible to get active window name or id? for example i have active notepad window, now how i can get it's process name or process ?id(better is process id)
View 1 RepliesIm creating a program that auto starts with my computer. On this program im adding a section that states how much space i have left on the C: drive. So far i have 2 labels and a progress bar. in the top level i have the name of what the progress bar is, and the second below the progress bar states the amount such as this "430GB/740GB". i also want the progress bar to state the percent of how full this drive is. how can i do the following:
Determine the amount of drive space on C:
Determine the amount of free space on C:
Make free space a percent of all space. such as "30% full"
I'm converted a VB6 project to vb.net using the convert tool.Now i have a few declares that included passing variables as "as any" which vb.net doesn't like and it seems you have to declare them as there correct type so i have the following,So i suppose , Long and Long
Private Declare Sub CopyMemory Lib "kernel32" Alias "RtlMoveMemory"(ByRef Destination As Any, ByRef Source As Any, ByVal Length As Integer)
and
Long again?
Private Declare Function CallNextHookEx Lib "user32" (ByVal hHook As Integer, ByVal nCode As Integer, ByVal wParam As Integer, ByRef lParam As Any) As Integer
I'm just asking for suggestions for a secure way of determining what type of application my VB.NET application will load as. For example, I intend to distribute my application to internal and external customers. There are differences in features etc. for internal and external customers. What secure way can I tell the application to load as 'internal' or 'external'? I want to avoid the command line (passing in an argument) or the application settings.
View 3 RepliesI've got this problem where I'm supposed to be determining whether a string is a word or not. not exactly.Its supposed to just make sure each string has at least 1 vowel, and each vowel is surrounded by consonants. If it meets those requirements it'll be accepted, if not it'll be rejected, but I've already got that part figured out. I think I know a horrible way to do it, that would take a very long time, but I'm thinking there has to be a much easier way..
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When trying to determine the Architecture of an OS, I ran across IntPtr.From reading the documentation, I saw this: Quote:The IntPtr type is designed to be an integer whose size is platform-specific. That is, an instance of this type is expected to be 32-bits on 32-bit hardware and operating systems, and 64-bits on 64-bit hardware and operating systems.
Since the size of IntPtr is intended to be the size of the architecture, would it be feasible to test the size and determine the OS by that? Or is there a better way?
I was thinking there might also be a way via WMI, but I don't want to use that for compatibility reason.
I am looking for a method to determine an applicants age from a masked text box(date). Below is what I am using but I wnat to utilize vb.net code instead of inherited datediff from VB6, also this method rounds off the age e.g 44.9 to 45 which is not acceptable.
Below is what I am currently using, looking for a better way.
Private _age As Int32
Private _SixQvar As Int32
'This determines the age of the client and sets the value of _SixQvar
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When i use VB6 i get the following outputs
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