Run A Method Every 2 Seconds?
May 23, 2010I want to run read_switch() every two seconds. How is that possible in vb.net?
View 4 RepliesI want to run read_switch() every two seconds. How is that possible in vb.net?
View 4 RepliesI 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
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This 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
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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 RepliesConsider a MyForm class that contains a shadowed implementation of Show(). It also contains a CreateForm() method, which accepts an instance of the form and calls the shadowed sub:
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Does calling the Dispose method on a Windows.Forms.Timer call it's Stop method? Or should I stop the timer before I dispose it?
View 5 RepliesI have a large problem with inheritance in vb.net. The problem is the following:
I have 2 forms => frmBase and frmChild
In frmBase i want to create a method Called StartWorking() and i want frmChild to inherit this method.
But here is the tricky thing: when frmChild.StartWorking is called i would like the following => without calling MyBase.StartWorking()
I want frmBase.StartWorking() to be executed first and after a test in frmBase.StartWorking if blnValue is true then frmChild.StartWorking has to be activated. if blnValue is false that frmChild.StartWorking cannot be activated.
I have nine pictures that I need to animate -I need to use the ToString method and a counter to concatenate a file name into a string variable from the Image.FromFile method. Once the counter reaches its maximum value, and the last picture is displayed, the counter should be reset to zero or one depending on how the first image file has been name. Also a static counter variable should be incremented in the time routine. what I have so far -- I know what I have to do; however, I just do not know how to code this properly.. Right now I have this going thru a button procedure but it needs to go through a timer.
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Write an overload for every numeric type or if possible constrain a generic extension method to just numeric types.
View 2 RepliesI just need to know what is the slight difference between them so I know which one to use everytime.
View 5 RepliesI will try to explain what I need.Let's say that I have a class like this:
Public Class Example1 Public Sub ToBeCalled()
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When I am loading an Assembly dynamically, then calling a method from it, I appear to be getting the method from Assembly executing before the code in the method that is calling it.It does not appear to be executing in a Serial manner as I would expect. Can anyone shine some light on why this might be happening. Below is some code to illustrate what I am seeing, the code from the some.dll assembly calls a method named PerformLookup. For testing I put a similar MessageBox type output with "PerformLookup Time: " as the text. What I end up seeing is:
First: "PerformLookup Time: 40:842"
Second: "initIndex Time: 45:873"
Imports System
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Why does my the declaration of my string in the code result in the following error? Is there a workaround?
Code:
<script runat="server">
Protected Sub form1_Load(sender As Object, e As System.EventArgs)
Dim x As String = "</script>"
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Error: Statement cannot appear within a method body. End of method assumed.
Note: The following page did not fix my issue and instead resulted in the string </script> being output in my page. ( VB.NET hates </script> tag in string literal )
I am not sure whether this is a trick question?One of the object i have has 2 boolean properties, Standing and Sitting.I have a class called student with the 2 methods stated below- Am I coorrect is assuming that the first method draw() is affected by the standing property AND not the second method?Also the way it affects is that it draws an image when the the stugent is standing?
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What's the equivalent method in .NET of the Picture1.Scale (0,0)-(10,10) method in 6.0?
View 2 RepliesLet's say I have a page Test.aspx along with test.aspx.vb.Test.aspx.vb contains a class name "TestClass". In that class I have method1(), method2() and method3()I need to be able to call one of those methods, but I can't hard code it, the method to be executed comes from a string.
I can't do
Select Case StringContainingTheNameOfTheDesiredMethod
Case "Method1"
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Extension methods are useful for types that you don't own and can't/don't want to derive from and extend (e.g. reference types and interfaces). Obviously, interfaces should be kept as short and to-the-point as possible, so extension methods for interfaces are particularly useful (e.g. LINQ).For classes, especially classes that you own, they're still useful - but I'm wondering how you determine what should be an extension method or what should be a method in the class itself.Personally, every time I think about it, I keep going round in circles with the following thoughts:If it's useful enough, it should be in the class.It's not part of the core responsibility of the class, it should be an extension method - but if it's useful enough, surely it should be the responsibility of the class...
View 3 RepliesI have a Application that Crypts all Files in a Directory and the Subdirectories
Public Shared Sub CryptAllFiles(ByVal crypt As Object)
'check if this dir exists
Dim vDirInfo As New DirectoryInfo(vPath)
If Not vDirInfo.Exists Then Exit Sub
'get all files' sizes in current path
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Is 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
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The code works fine if the amount of seconds is 3600 (1 hour) and under, but if its above, it doesn't really work.
Just playing about with some vb.net and i dont understand why when i enter Dog into the text box the label continues to say not dog?
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Is there a way to choose between different methods and pass one into another method ?
Sub conditionnal_binding(ByVal list_box_reference As ListBox, ByVal list_box_final As ListBox, _
ByVal dico_source As Dictionary(Of String, List(Of String)), _
ByVal my_methode As ??? )
' DO SOMETHING
End Sub
I wrote ??? because I don't know how to call another method inside a method.
I would like to choose between different "sub-methods". Here is how I would like to use my method :
conditionnal_binding(ListBox1, ListBox3, HTML.dico_basic_attribut, best_method)
conditionnal_binding(ListBox1, ListBox3, HTML.dico_basic_attribut, some_method)
conditionnal_binding(ListBox1, ListBox3, HTML.dico_basic_attribut, another_method)
I'm trying to code an application that selects an appropriate delivery method from a list box. The user should be able to enter a part number consisting of numbers and either one or two letters. "MS" representing "Mail-Standard, "MP" for "MailPriority", "FS" for "FedEx-Standard", "FO" for "FedEx "Overnight" and "U" represents "UPS" I want to code it so that it does the above and displays an appropriate message when the part number contains an invalid letter or letters.
Option Explicit On
Option Strict On
Public Class MainForm
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I am indifferent if you are a VB.NET or C# or other .NET developer. I have a FACTORY class like the following:
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Dim purchasedate, purchasetime As String
purchasedate = Date.Today
'Stores current time in the variable purchasetime
purchasetime = System.DateTime.Now.ToString("HH:mm:ss")
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I am trying to add 60 seconds to the current time (purchase time) but would my method of System.DateTime.Now.ToString("HH:mm:ss") + 60 add 60 seconds to the current time ?
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.