Add Timers To A Collection?
Jul 19, 2010how can I place all timers on a form into a collection
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.net - Storing Subcollections (filtered Versions Of The Main Collection) Inside The Collection As Cache?
Jan 15, 2010Is it good practice to store sub-collections of item X inside a parent collection of item X for caching 'filter-queries' which are performed on the parent collection? (They won't be used together (as in color AND type).) Or is it also ok to just Loop over the collection and return the correct entities in a temporary collection?
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C# - Edit List Collection : Error Note Collection Was Modified - Enumeration Operation May Not Execute?
Sep 7, 2011I have the following classes:
Product, Service and OrderItem
Product and Service must inherit OrderItem. So basically I want to store OrderItem object in my shopping cart and these object are store in a list.
Public MustInherit Class OrderItem
Private m_enuItemType As TypeOfItem = TypeOfItem.None
Private m_strUserID As Integer[code].....
Make A Custom Collection That Take Advantage Of The Collection Editor?
Feb 8, 2010I have been researching for a couple of days now and to no avail. Does Anyone know how to make a custom collection that take advantage of the collection editor? I would like to be able to have 3 Color Values, 1 Boolean and 1 String.
View 15 Replies.net - Collection Initializes For Read-only Collection Properties?
Jul 25, 2011I'm trying to support Basic.NET on my framework so I'm trying to convert C# 4 code to Basic.NET 10. Microsoft is committed to "co-evolve" these two but I'm having a problem with collection initialization... I found that I can initialize a collection much like in C#:
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.net - Search The Collection Of A Collection In LINQ Where Clause?
Apr 15, 2009I've got the following ADO.NET Entity Framework Entity Data Model:I want to find all the Policyholders with both a Service of a given Id and also a Keyword of a given Status.
This LINQ Does Not Work:
Dim ServicesId As Integer = ...
Dim KeywordStatus As Integer = ...
Dim FoundPolicyholders = From p As Policyholder In db.PolicyholderSet.Include("Keywords").Include("Services") _
Where p.Services.Id = ServicesId _
And p.Keywords.Status = KeywordStatus _
Select p
The Where clause cannot search the p.Services and p.Keywords EntityCollections in that way.
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Accessing And Adding Items To A Collection That Is In A Collection?
Apr 6, 2012currently in my application I have a Global Collection that is a Collection of Collections.Currently I am trying to add items/ elements to one of the child collections of the Global Collection but I am unable to use the collections methods of the child.When I assign a variable to the child collection and return the collection it is just an object with the collection inside.
Ex:
Dim GlobalCollection as New Collection
Dim ChildCollection1 as New Collection
Dim tempCurrentCollection[code]......
Collection Index Must Be In The Range 1 To The Size Of The Collection?
Dec 17, 2009I've been working with a CMS called InsiteCreations 2008. I'm running into an error I just can't wrap my head around. I would even be willing to compensate anyone a small amount over paypal, for a solution. The error is rare in occurance, and appears when clicking about 3-4% of links to other pages within our CMS.The full code page is quite large, but there seems to be only one function associated with the error. The error also only appears when not logged into the CMS. If logged into the CMS, clicking the link simply displays the page as normal. I have already checked permissions on the page from the CMS admin console, and it is public.
The error message is as follows:
Server Error in '/' Application.Collection index must be in the range 1 to the size of the collection.
Description:
An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.
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Search The Collection Of A Collection In LINQ Where Clause?
Apr 15, 2011search the collection of a collection in my LINQ Where clause?
View 11 RepliesHow Many Timers Is Too Many
Mar 9, 2010is it a good coding practice to keep timers in a project to a minimum, or does it not really matter?
View 1 RepliesGet The Timers To Get Activated?
May 31, 2006I recently upgraded an application from VB 6.0 to VB.NET. This application contains a timer in its form (only one form is there). But after upgrading, the timer is not getting activated. Form is using DefInstance as follows: frmMain.DefInstance.Show()
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How To Multithread With Timers
Nov 17, 2011how do I multithread using timers. For instance 3 picture boxes that change ever 3 seconds?
View 1 RepliesStop All Timers At Once
Aug 13, 2010I have a from with various timers. what is the code to turn off all timers in a form at once?
i all ready tried:
For Each crt As Control In Me.Controls<br/>
If TypeOf crt Is Timer Then<br/>
crt.Stop()<br/>
End If<br/>
Next
Testing The .NET Timers?
Apr 25, 2010Public Class Form1
Dim SW As New Stopwatch
Dim MS As New MenuStrip
Dim Btn As New ToolStripButton
[code]....
Timers Out Of Sync?
Oct 22, 2009Public Class Form1
Public elapsed_time As TimeSpan
Public start_time, stop_time As DateTime
Public txtBreak As String = "180"
[code]....
All the code needs to be controled by seperate timers as the user may need to pause timer3 or timer4 at any one time. The problem I have is that after about 5 minutes the time and elapsed time are about three seconds ahead of the two count down timers.
Timers With For Each Loop
Apr 23, 2012I'm developing an application to learning purposes only. The application will check some proxies that are in a proxy list.
I did a For Each loop ( to run all the proxies in the listbox ). The problem is some proxies are slow to answer and I must do the application wait some seconds before get the next proxy.
I tired a sleep thread but I don't want the application to be unanswering. There's any chance to help me with the timers?
I tried all possible ways and searched a lot but my problem is each time the timer ticks, it make the full for each loop again instead waiting.
Waiting Without The Use Of Timers?
Jun 5, 2009basically what im doing is something similar to this;
Private Sub FirstRoutine()
'This is my first routine, i load a listbox up with a whole
heap of info
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.NET LINQ - Count Of Collection Within Collection?
Apr 14, 2011Take the following scenario:
Public Class Store
Public Overridable Property Areas As List(Of Area)
End Class
Public Class Area
[code]....
What's the quickest way to get a total count of shelves for a store? I.e. for a store I get the total count of areas by using Areas.Count Or will I need to loop through each area and tally the count of shelves?
Asp.net - Add Controls To A Collection And Update From Collection
Mar 25, 2011I have an ASP.NET app with lots of textboxes all over the page that need updating at various points through program execution. These textboxes actually belong to a certain class, so for easy updating I thought I could create a Dictionary(Of string, object) and add the control.ID and the control to it and then for updating do something like this:
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C# - VB Collection - Convert To A Modern Collection?
Jun 26, 2012I need to convert a VB Collection to a modern one, like Dictionary or Hashtable. For my approach, I need the Collection's KEYS. Googling tells me that it's impossible. Re-writing the entire application using new collections is not an option as the application is really old and large (converted from VB6 to VB.Net).Using the old Collection also is not good - as there are new components in development.Converting a - for example - Hashtable to Collection works:
using VBCollection = Microsoft.VisualBasic.Collection;
public static VBCollection ToVBCollection(this Hashtable table)
{
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Capturing A Timers Time?
Feb 8, 2010The below is my program so far
Public Class Form1
Private Display As Boolean
Private WithEvents tmr As Windows.Forms.Timer
[code]....
Upon clicking the button a series of letters are displayed to the screen.I would like to be able to capture the time taken to press the letter shown.
Console Application With Timers?
Jun 14, 2011keeping an Console Application running, so that a timer can perform routine tasks. I am newer to VB.NET and I am not sure what the best method of doing this. Here is a sample of my code that I have currently.
Imports System.Timers
Module MainModule
Public MonitorEnabled As Boolean = True
[code]....
Do Timers Cause Page Faults
Jul 9, 2009I have the system tray icon changing pictures based off a timer..and when I check my page faults they go up on every tick ofthe timer.. so then I pull out the changing of the picture thinkingthat was it.. but still page faults increase..so just wondering if timers have issues ?this was a timer from VB6 ? is there a new timer I should use from.net.. delete the old and use a new control ? I have a couple sobefore I switch them all out.. figure I would find out first..
View 2 RepliesExecute 2 Or 3 Timers At Same Time?
May 20, 2011can i execute 2 or 3 timers at same time if its possible how come?
View 5 RepliesTimers And Loops Does Not Wait
Sep 5, 2009I am using vb 2008 I am trying to learn loops and timers but I have some problems. [Code] The problem with this is it does not wait it just sends 123 all at the same time. I tried using the other way the one that makes the program freeze for the amount of time I want it to wait, but I don't want the program to freeze I want to to move my mouse ext whilst its doing it. as for the loop this is as far as I got I cant really test it yet cos my program is typing 123 a million times a second and my pc doesn't like that so i need to fix the timers. [Code]
View 7 RepliesTimers Get Disabled After New Event?
May 8, 2011I created a timer in the main form - form1 which then updates some text in form2 each 100ms. Now When I click a button in form1, the timer stops. Why? Happens no matter if timers are on or off by default. I have to open/close form2 to make my status updates work again - that's where I run the timer on form load and stop the timer on form close.
Was doing it in windows 2010 express.
So this is what I have in form1:
Public Sub Timer1_Tick(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Timer1.Tick
'some stuff
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Timers On A Console Application?
Jan 8, 2009I am new in .net but I am working on a console application and all I want to do is stop the consolo application if it is idle for more that 3 minutes. I did this on a VB6 using the timer but in .net i can't.
View 4 RepliesVS 2008 Timers And Forms
Mar 18, 2011I have a background application with a couple of System.Timers.Timer running in it. I also have a NotifyIcon that when double clicked brings up a windows form.
My problem is that sometimes my form gets displayed but then for whatever reason it seems like it's losing focus and becomes un-usable (it just sits there in the background).
So here comes the question now... Can the freeze be caused by the form loading (i.e. me double clicking my NotifyIcon) and the timer tick happening the same time?
VS 2008 Two Timers One Stops?
Jul 4, 2010I have a timer in one app which is basically the clock of Windows displayed in a textbox.If I run two apps at the same time I notice that one timer after a while, stops
View 12 RepliesVS 2010 LOTS Of Timers?
Jul 12, 2010I'm considering making an application that will perform various tests against servers on a local network - for example pinging them, checking hard drive space, checking the state of services, whether or not databases are available, etc etc. Very similar to Hostmonitor if anyone has ever used that - but my app will be free
These tests would have to be performed at specified intervals, but the problem is that there could be literally hundreds of tests and I'm not sure how well my app would cope with hundreds of timers running... especially if they are all configured to run every minute or two (they all need to run independently of each other).
Really I'm just wondering how you guys would design such a system.The best way I can think of is to have a separate timer associated with every test and then when a test's timer has elapsed use the ThreadPool to do the work that the test will perform. That way if loads of them happen to run at the same time then the ThreadPool will queue them rather than trying to run say 200 at once. I also think I would need to have some kind of staging for when the app first starts, so that every single test is not going to have the exact same time to run (well, every test that has the same interval configured), but that shouldn't be too much of an issue.I guess it would be a good idea to try and use some sort of grouping so that more than one test can use the same timer - like if 20 tests were set to run with a 5 minute interval then I could use one timer and run all of the tests when that one timer fires.