I have intger that represent time, but are not time values. So I have a MIN as int = 5 and SEC as int = 25. And I want to subtract 30 from SEC.
In normal math I would get -5. But this is time, so my MIN should be 4 and SEC be 55. Is there a formula for this already?
I know it would be easier if I was using DateTime, but that is not a option. I'm locked into using integers.
I want to convert seconds such as 254565443 seconds to hours, minutes, and seconds and thought if I could remove the decimal and the numbers behind it and not change the number in front of the decimal then it would work.
dim seconds = 254565443
dim Hour
dim minute
[Code]....
in calculating interval between two Events in Seconds..
View 4 RepliesI'm looking for a way to calculate an average from a input integer within a loop. When the user enters something like -90, the average will be calculated using the previously input numbers.
View 4 RepliesThis is my function to goto a specific time in a movie or music, ... check it out..
'GOTO TIME IN MOVIE, or SONG.
Private Sub Button5_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button5.Click
[Code]....
Quick question - if I have a timer set to 5000 (5 seconds) and the code in the timer takes longer than 5 seconds to run because of sql stuff, will the timer wait until the code is done till it fires again?
View 3 RepliesI am trying to calculate the number of years for my calculate age event handler, however i am apparently missing a method or whatnot because im trying to calculate the age , can anyone suggest help on this. I need to subtract years to get my age but when i try the birthdate.Subtract (currentDate) method i get an error about not able to convert from LONG?
So below is what I have.
Private Sub btnCalculateAge_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnCalculateAge.Click
Dim currentDate As Date
Dim BirthDate As Date
Dim Age As Long
[CODE]
ive got some simple problem i cant understand how to solve.
str(1) is an array and integer(or double, tried both)
a(1) is an array and integer (or double, tried both)
a(1) = a(1) + 1
Label1.Text = str(1) + a
the big part is where i get: operator '+' is not defined for types 'integer' and '1-dimensional array of integer'.why do i get that message and what does it mean? how do i make the code do what i want?
I faced an error when upgrading VB6 code to VB.NET. The error occurs at AddressOf WindowProc
AddressOf expression cannot be converted to 'Integer' because 'Integer' is not a delegate type
My declaration for SetWindowLong is:
Declare Function SetWindowLong Lib "user32" Alias "SetWindowLongA"(
ByVal hWnd As Integer,
ByVal nIndex As Integer,[code]....
What is the reason for the error I get?
I'm trying to create a linked list of an array of integers. Why is the following implicit conversion required?
When I run the code that contains that conversion, I get the following error.
As a real-time data acquisition user control data (a packet of an array of bytes) arrives every second, is converted into an integer array and inserted into a linked list.
The most recently arrived data is painted as coordinates on a grid at the right of a PictureBox using Graphics.DrawLine (pen,X1,Y1,X2,Y2).
The oldest data (arriving 120 seconds ago) will be drawn at the leftmost portion of the Picturebox.
Why a linked list rather than a list? To display 120 views of time sequence data, the draw routine the most recently inserted node to a node that points to Nothing. How do I limit the length of the linked list to 120 nodes and always ensure that the last node points to Nothing?
Do While Not item Is Nothing
item = item.NextItem
Loop
I am a newbie in VB and I got a piece of code which can display the current running program. I need to use that in VB2005 and I got the below error message. Can anyone help how to fix it?[code]
View 18 RepliesI'm trying to convert a VB6 project to .NET, but I get problems with some callback functions, and the following message comes up: "AddressOf' expression cannot be converted to 'integer' because integer is not a delegate type" I've seen several solutions to similar problems like this, but I am not able to understand this issue with delegates.
After the conversion, the code look like this:
Declare Function vsmsgwSetDataPackageCB Lib "vsmsgwW.dll" (ByVal PACKAGE As Integer, ByRef arg As Integer) As Integer
Dim arginitP As Integer
[Code]...
Which gives the error: Method 'Public Function PackageCB(HisNodeID As Integer, ByRef data() As Byte, ByVal length As Integer, ByRef arg As Integer) As Integer' does not have the same signature as delegate 'Delegate Function DelegatePackageCallback(hwnd As Integer, lparam As Integer) As Integer
I have a LINQ2Entity problem, I want to get the value, string, from a database, so I select FProducts.Serial_number, and to end the query, I do .ToDictionary. The problem is, it tells me that it doesn't have sufficient parameters, to convert ToDictionary. So I need something like select FProducts.Serial_number, Nothing). ToDictionary. Also FProducts.Serial_number, 0).ToDictionary doesn't work.
Sub GetStatistics(ByVal ProductNumbers As List(Of String), ByRef Passed As Integer, ByRef FailedProducts As List(Of String))
Passed = 0
FailedProducts = Nothing
[Code]...
this is for a BINGO game final project that I already turned in but this just bugged me that I could not get the sorting figured out. I am trying to get this to sort the random numbers in to columns under the correct letters but I keep getting the error Operator '>=' is not defined for types '1-dimensional array of Integer' and 'Integer' under the line:
[Code]...
I am new to EF Linq and I have been struggling with this query for a few days. From reading this forum, I have managed to get this far:
Dim noPic = (From f In myEntities.FriendLists
Where (f.UserID = Profile.ID)
Select f.FriendID).Except(From g In myEntities.GuestLists
Where g.EventID = _id
Select g.FriendID)
[Code]...
I am trying to get everybody from the FriendList who is not already on the GuestList to display in a Repeater control. After reading the forum I was able to append .First() to noPic at the myNoPic declaration and finally get a result but that only gave me the first element. Does anybody have any advice on how to accomplish this?
Why doesn't CDate(integer) work where integer has format of YYYYMMDD ?and why won't this stupid site let me submit such a short question when I have nothing else to add except some waffle at the end
View 2 RepliesThis is giving me a headache. I have this link query here that grabs an ID
Dim mclassID = From x In db.SchoolClasses Where x.VisitDateID = _visitdateID Select x.ClassID And then later on I have this linq query
ViewData("Staff") = From t In db.Staffs Where t.ClassID = mclassID Select t
I've tried quite a few things but to no avail. I've attempted casting, converting, Is operand, etc.
I'm just writing a bit of code to compare an id of integer with an id of integer? for example:
Dim id As Integer = 1
Dim nullId As Integer? = Nothing
Dim areEqual As Boolean
areEqual = nullId = id
When I try to compile the code I get a compiler error: Option Strict On disallows implicit conversions from 'Boolean?' to 'Boolean'. Whilst it's very simple for me to work around this, I was hoping that someone might be able to explain what's going in the compiler to give this warning.
I'm trying to set an Integer value from my.settings.The values comes frpm a listbox, and then inserted to settings (set to specialized.StringCollection)The problem is when i'm trying to get the values and apply them to my function.Error code: Conversion from string "65 & 71" to type 'Integer' is not valid.To me it looks right, but maybe i'm missing something.
Code: Dim test2 As Integer Dim test As System.Windows.Forms.Keysm trigglist As New StringBuilderor Each item As String In
[code].....
i am doing one project in which i declare integer value and asign value to that integer in which
see the following code
[Code]...
i tried this, but had invalidcast at line 2.
vb.net
Dim a As Array = Array.CreateInstance(GetType(Integer), New Integer() {1}, New Integer() {1}) Dim b As Integer() = CType(a, Integer())
what i'm trying to do is to create an Integer array with LBound greater than 0. any way would be accepted, or can i say this: my function that takes i As Integer() as its argument does not have to check the LBound of i because there is no way LBound of i will ever be greater than 0
Can somebody explain the second one to me? I'm not clear on the concept.The first one I know is an array of integers. but what about the second one?
View 2 RepliesIs there any difference between these two ways of declaring a Integer and setting the value to zero? vb.net Dim x As Integer = 0' or...Dim x As New Integerx = 0 Is one way better than the other in any situation?
View 15 RepliesIs there a way to add x seconds to a stopwatch once a button is pressed? the stopwatch is currently running by the way.
View 9 RepliesI want when i press a button in richtextbox add a text then after 10 seconds the text changed.
Can I do this?
I would be very grateful of any insight/resolution of the following issue I need to overcome.Using VS/VB2008 Pro/SQLExpress - all running on XP, I am building a WinForm Application (a Quotation application for Landscape Designers).48 Bound controls on my form work perfectly with DataSet and Tables when Updating any user changes to controls on the form to variables that determine price/cost of work being quoted for - providing the DataSet has already got values in it; Delete also works fine. However, although the "AddNew" (on form's BindingNavigator) works, it takes 30 - 35 seconds to add a new row. Table contains 10 rows and 45 columns. This is unacceptable and despite most of this afternoon reading forums, searches etc, I have failed to find a solution to an issue that I cannot believe appears to be so infrequent. Clearly, it is something I am doing or not doing.
I have searched via Google, crawled over MSDN pages, read/searched some of the standard textbooks on VB 2008 and looked (again) at Beth Massi's Data-related Forms over Data video series. I have re-checked the properties for the TableAdapter/Manager on my Form. I have used the wizards to create the necessary Select etc clauses. All runs as required except when user needs to add a new row (aka "New Quotation")
I was wondering if it's possible to add seconds to a clock in vb.net. I mean lt's say I have a label and I assign it to DateTime.Now(), how would I show/display the time with the seconds "ticking"?
View 1 RepliesI have at timer that at the moment only shows in the output label as seconds, but i am looking at displaying it as minutes and seconds. The timer value is held as a double, and i don't really understand the date time concept.Would someone be able to explain to me how to display it as mm:ss
View 10 RepliesI'm currently coding a small app, and I got sort of stuck when I had to convert from seconds to HH:MM:SS. This is the "solution" I came up with so far, but there's a small problem with it.
Code:
Public Class Form1
'Accept amount of seconds
Public seconds As Integer
[Code]....
The code works fine if the amount of seconds is 3600 (1 hour) and under, but if its above, it doesn't really work.
I want to run read_switch() every two seconds. How is that possible in vb.net?
View 4 Replies