Does Calling The Dispose Method On A Windows.Forms.Timer Call It's Stop Method
Nov 12, 2009Does calling the Dispose method on a Windows.Forms.Timer call it's Stop method? Or should I stop the timer before I dispose it?
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C# - Calling A Method In A FACTORY Class When Application Is Closed / Disposed Without Using Application's Dispose() Method
Mar 28, 2012I am indifferent if you are a VB.NET or C# or other .NET developer. I have a FACTORY class like the following:
[Code]...
Should A Local Variable Call Dispose Method And Set To Nothing?
Oct 14, 2009I have 2 question, hope somebody give me an explanation: 1. Should a local variable call dispose method and set to nothing? 2. If some method have an arguments which it is a ByVal argument, it means a method create a new object? But If it is a ByRef argument, it means a method don't create a new object?
View 4 RepliesCall A Method That Compute Some Data That Method Is On Another Form In Windows Form Application?
Mar 17, 2012i want to which way is better when concentration is on processing speed. i want to call a method that compute some data that method is on another form in my windows form application then what you prefer is better way 1) to call that method in another form and use returned value or create similar method in form where it is required.i want to make it's processing fast.
View 3 RepliesCalling .dll Method From Inside A Timer Won't Work(Console Application)?
Nov 26, 2009I have a .dll file (Interop.ACTMULTILib.dll) that I use to connect to a PLC. This .dll contains a sub called ReadDeviceBlock2(byval devicename as string, byval size as integer, byref data as short). When I call this method in my main it works fine, if I call it from another method that was called by main it works as well.However, it doesn't work when I call it from my Timer_Elapsed sub? I guess this has to do something with threads but I can't figure it out.
Module Main
Private Timer As New System.Timers.Timer
Private PLC As New ACTMULTILib.ActEasyIF
Private DataSet As new DataSet[code].....
Reflected Method From A Loaded Assembly Executes Before Calling Method?
Jun 9, 2009When 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
[code].....
Get The Name Of Parent Method/class/file Name Inside Other Method Call?
Feb 16, 2010I will try to explain what I need.Let's say that I have a class like this:
Public Class Example1 Public Sub ToBeCalled()
[Code]...
Calling A Method When The Method Name Is Contained In A String?
Oct 5, 2011Let'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"
[code]...
Forms :: MDI - How To Call Save Method
Jan 22, 2011I have MDI form in different project and child forms in different project which is dll project. How can I call save method of my child form from MDI form when I click on save from toolbar button of mdi parent form. I can't access child forms save method at run time?
View 11 RepliesVS 2010 Call The Same Method In A Method While Threading?
Jan 29, 2012I 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
[Code]...
Forms :: Mdi Call Active Child Form Method?
Aug 20, 2009I'm trying to call a method defined within a child form from the menu strip of the parent form when the child form is active.
View 1 RepliesForms :: Way To Return Multiple Rows Of Data To Calling Method Via Class Property?
Jan 28, 2009I have this application which has one class. I need to return a recordset of data to the calling form. If i use Properties to return, it can only return only a single value at a time. Right now i'm returning a datareader object with one of the properties.Can anyone suggest a better way to return multiple rows of data to the calling method via Class Property?
View 1 RepliesC# - Stop Developers From Calling System.Windows.Forms.Application.DoEvents()?
Mar 15, 2009We just spent 300 man-hours fixing a buggy application in the field. It all came down to calling Application.DoEvents (re-entrancy problem).This was not caught in design reviews, code reviews.The code was inserted two years ago with the first version; the application was always "flaky" but recent changes exposed the re-entrancy problems to a greater degree. This incident is the second time in our organization that Application.DoEvents caused failures and multi-man hours of debugging.It was discovered in this case by simply noticing the call,buried way down in a complex event handler for an asynchronous task.What do you suggest to prevent this issue from happening again:
Add checkin gates to source control?
Developer training?
Code Analysis rules (why is this not already a built-in rule?)
How to I enforce a coding practice?
Call A Method That Started On A Background Thread On The UI Thread Calling BeginInvoke And Passing In A Delegate?
Aug 27, 2011I am trying to call a method that started on a background thread on the UI thread calling BeginInvoke and passing in a delegate as follows:
Dispatcher.BeginInvoke(Function() UpdateApplicationDataUI())
to call this method:
Private Sub UpdateApplicationDataUI()
...
End Sub
However, I get an error in the call to BeginInvoke (the UpdateApplicationDataUI portion of the delegate is stating "Expression does not produce a value").
Me.Dispatcher.BeginInvoke(Function() New Action(AddressOf UpdateApplicationDataUI))
Call Uninstall Method In ServiceProcessInstaller For Installing Windows Service Using MSI?
Aug 13, 2009I have a Deployment project which creates an MSI setup file to install a service. (VB .NET) I have a reference to another project which is a win form application and has a setup form which takes the user name, password and some other settings information which will be used by a service. It has "Finish" and "Cancel" buttons. I am creating a new instance of this form on Sub New() of the ProjectInstaller Class, so user can input information, click Finish and installation completes. The service is then automatically started. Now, when I click Cancel on the settings form, I am not able to exit out and halt the installation process. Instead it installs the service !! How can I use the Rollback or Uninstall methods to do the task? I was trying this -
On cancel_click, set boolean var cacelStatus = True
On Sub New() method of ProjectInstaller class, I am checking - If true - uninstall, else - install
How can I achieve this?
Appropriate Use Of Dispose Method
Jan 28, 2009When is it appropriate to apply the dispose method to controls?For example in a form that has five group boxes, once the first group box is used to gather user entries and is no longer needed, is it worth it to apply the dispose method to the first group box? Is it needed for local variables, for example a StringBuilder used within a private function which is only used while the function is executing?
View 1 RepliesDoes The .dispose() Method Do Anything At All
Jan 7, 2010I was experimenting with ways to get rid of some memory leaks within my application the other day when I realized that I know virtually nothing about cleaning up my resources. I did some research, and hoped that just calling the .dispose() would solve all of my problems. We have a table in our database that contains about 65,000 records. Obviously when I fill my dataset from the dataadapter, the memory usage can get pretty high. When I called the dispose method on the dataset, I was surprised to find out that NONE of the memory got released.
View 3 RepliesStrongly-typed Generic Method Invokes Its Argument's Base Class Method Instead Of A Shadowed Method In T?
Oct 19, 2010Consider 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:
[Code]....
C# - What Happens If Call Start() Two Times On Class System.Windows.Forms.Timer
Dec 28, 2010Imagine that I have a System.Windows.Forms.Timer with 1000 ms interval. If I call Timer.Start() method and after 500 ms I call again Timer.Start() what happens? The second Start call will reset the interval or not? Are there any side effects?
View 3 RepliesDispose Method In Using Statement
Feb 7, 2012I have Overloaded the Dispose method of System.Windows.Forms.Form Class in which I have written some extra code which I need to execute when object of Form Disposes. But when I create the object of Form in 'Using' statement, the 'End Using, statement do not execute my overloaded Dispose method. What should I do?
View 13 RepliesWindows Forms Window Load Method Not Completing?
Oct 12, 2010So in my window onLoad method I am pre-populating a grid with values retrieved from a database. Here is the method below for the window load:
Private Sub winMain_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
''#Load Grid
Dim dt As New DataTable
With dt
[code].....
What happens is, when I press F5 to debug, the program loads, and the grid is still empty, just as it is without a datasource. When I try to step through the code, it actually reaches down to the line that reads
Budgets = BudgetManager.Process.Budget.GetAllBudgets()
and then stepping over this line...the window loads and it doesn't go any further in the method. What the line of code above does is eventually make a execution call of some SQL to a SQLite database, and the code gets to the point at which it calls the execute method, but doesn't even make the query yet. All the objects up until that point in the code are set properly as well (found through debugging and checking locals.)Edit:Exception is this:
"Mixed mode assembly is built against version 'v2.0.50727' of the runtime and cannot be loaded in the 4.0 runtime without additional configuration information.
C# - Set Custom Object To Null In The Dispose() Method?
Feb 17, 2010Is there any sense to set custom object to null(Nothing in VB.NET) in the Dispose() method?Could this prevent memory leaks or it's useless?!Let's consider two examples:
public class Foo : IDisposable
{
private Bar bar; // standard custom .NET object
public Foo(Bar bar) {
[code]....
Dispose Method - Why Class Destructor Not Being Called
Jun 22, 2011I have a class that has a destructor and a Dispose method (I also inherit IDisposable). Why is it that the only time my destructor gets called is when I call GC.Collect()?
View 2 Replies.net Timer Calling A Process To Stop?
Feb 27, 2011I have a process that i call, if it doesnt end within a certain time, i want the process to be killed and the loop to only continue after this. if i thread the timer it never tics. If i thread the process it never does as its suppose to.
Code:
Imports System.IO
Imports System.Threading
Public Class Form2
[code]....
.net - Will SqlConnection's Dispose Method Interfere With Connection Pool
Jul 20, 2011From my understanding, .Net will pool SqlConnection objects where the Connection String is the same by default. Will the connection still be pooled if I call the Dispose method? This question is asked under the context of an ASP .Net application that at times makes many hits to the database in a single PageLoad event. I want the connections to be pooled, but would like confirmation that Closing and Disposing of the connection once the data operation is complete does not interfere with .Net's handling of the connection pool.
View 3 RepliesWinforms - Dispose Method In Form's Designer File?
Sep 12, 2011<System.Diagnostics.DebuggerNonUserCode()> _
Protected Overrides Sub Dispose(ByVal disposing As Boolean)
Try
[code].....
How To Stop A Method
Apr 8, 2010Private Sub cmdGenerer_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles cmdGenerer.Click
'Ceci remet le focus si l'age en en-dessous de 18 ou au-dessus de 65.
[code].....
Getting The Name Of The Calling Method
Sep 14, 2009Basically i've got a web service that i'm trying to put some kind of usage logging in. To do this i've created a class with a logging method. I instatiate the class on the service and then call the logging method in each of the web methods.
[Code]...
Calling .DLL Method From Timer_Elapsed?
Nov 25, 2009I have a .dll file (Interop.ACTMULTILib.dll) that I use to connect to a PLC. This .dll contains a sub called ReadDeviceBlock2(byval devicename as string, byval size as integer, byref data as short).My console application startup thingy is a module. When I call this method in my main it works fine, if I call it from another method that was called by main it works as well.However, it doesn't work when I call it from my Timer_Elapsed sub? I guess this has to do something with threads but I can't figure it out.
Module Main
Private Timer As New System.Timers.Timer
Private PLC As New ACTMULTILib.ActEasyIF
Private DataSet As new DataSet
[code].....
Calling A C# Method Using VB Code?
Jan 26, 2010I have a project that has some VB code in it that I'm not allowed to convert to C#. I work in C# and not very good at VB, but I am needing to modify that VB code to use some C# methods I created.
For example:
C#:
Code:
using MGCIS2.Reporting;
using CrystalDecisions.Shared;
[code]....
At this line in the VB code (Dim crv As New Tax.Reports.CrystalReportViewer(_rdbc)) it is giving me an error:Too many arguments to 'Public Sub New()'