Calling Method From Class In VB 2010?
Jul 18, 2012
essentially I need to create a class that houses the methods and then call the methods in the form but I can't seem to find out what the right code is to call it. I think there may be an issue with the conversion from a double to a string.
This is what I have for the Class
Public Class Aircraft
Dim Names() As String = {"A-747", "A-737", "C-150", "D-240"}
Dim TakeOffVelocity() As Double = {250, 264, 270, 240}
Dim Acceleration() As Double = {33.5, 44.2, 37.1, 51.9}
[code]...
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Mar 28, 2012
I am indifferent if you are a VB.NET or C# or other .NET developer. I have a FACTORY class like the following:
[Code]...
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Mar 21, 2012
I have a logging class that stores entries in a datatable dt. I then use SQLBULKCOPY to write that dt out to a sql table. Basic stuff. Problem is, I'd like to only call SQLBULKCOPY when there's say 50 entries in the dt. The problem is, what if I'm done (either intentionally or not, like if the code block that's using the log class throws an exception) with the logging object and there are still 15 rows in the dt?
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Apr 11, 2009
I'm working on a base class right now, here's a basic rundown of it:[code]The problem is, in the Public Class bar example, some classes may implement MyInterface, and others don't. What I'd like to be able to do is have the sub New() in the structure in the base class "Foo" be able to tell if the class calling it (either the Base class, or the child class) implements MyInterface or not.
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Dec 5, 2011
I have two forms Form1 and Form 2. I am passing a function with three values from Form1 and want the load event of form2 to trigger this function.. Basically I want to "paint" the values of qseq, midline and hseq on form2
Public Class Form1
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
[Code].....
When I run this, nothing gets printed on form2 as when load event is triggered thee drawstring method is not called. how can I call drawstring from load method as drawstring takes in arguments and is called from Form1 class.
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Jan 28, 2009
I 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?
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Mar 12, 2011
If I have two classes, one and two:
Public Class One
End Class
Public Class Two
[Code].....
Is there any way that a sub in class one can call the sub in class two?
In other words, I have a main class that instantiates objects from other classes, but I want one of those other classes to be able to 'talk back' to the main class without being polled.
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Nov 12, 2009
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?
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Jun 9, 2009
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
[code].....
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Oct 19, 2010
Consider 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]....
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Oct 5, 2011
Let'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]...
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Sep 18, 2010
Part of my program is to simple copy a range of cells ~21 000 rows from one WB (oSH) and copy it to another WB (oSHOut). I've red a lot of posts,tried a lot of variants, but nothing works. Strange here is that if I copy less than 8500 rows, the paste to the destination range is OK. But if I copy the whole range ~21000 rows, vb.net trigers an error - "Copy method of Range class failed". So I tried to do this in several parts - 1 row to 8000, 8001 to 16000 etc. The first copy-paste works OK, on the secon - there's an error
Imports Microsoft.Office.Interop
Imports System.Data.Odbc
oRNG = Nothing
oRNGOut = Nothing
oSH = Nothing
oSHOut = Nothing
[Code] .....
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Jun 4, 2011
Right now I have a Email class that has all the properties of an email to send it, and then a SendEmail function which takes those properties and uses them in the following
Public Function SendEmail()
'Exception handling
Try
[Code]....
The loop goes through each email in the array to process its email, however with the multithreaded function I cannot call
"EmailArray(i).ThreadSendBatchEmail()"
So how do I call an objects method when its on a different thread?
And I'm making it multithreaded so I can easily pause the process, and because the program freezes when the send() function is working, this would resolve that.
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May 13, 2011
Example:
Two files - TestClass.vb, myForm.vb
TestClass.vb looks as follows:
Imports System.Threading
Public Class TestClass
Private myClassThread As New Thread(AddressOf StartMyClassThread)
[code]....
The result:Application runs, no errors or exceptions.Displayed is the listbox and the Start button.I press the start button and a msgbox says "Not Invoked" as expected and upon clicking OK to that msgbox "Start Button Pressed" is added to the Output listbox control.Immediately following that the msgbox pops up again and says "Not Invoked". I was expecting "Invoked" as a separate thread is trying to use the Output listbox control.Of course this results in the Output.Items.Add being attempted which results in no visible result as the thread is not allowed to directly update the UI control.
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Feb 16, 2010
I will try to explain what I need.Let's say that I have a class like this:
Public Class Example1 Public Sub ToBeCalled()
[Code]...
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Sep 14, 2009
Basically 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]...
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Nov 25, 2009
I 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].....
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Jan 26, 2010
I 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()'
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Feb 23, 2012
I converted some code from c# for a VB.net project I have an object declared as this :
<Serializable()> _
Public Class oUserApplication
Public ApplicationID As Integer = 0
Public ApplicationRoleID As Integer = 0
[code]....
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Jul 6, 2009
I am having some problems calling the First() method of the System.Collections.ObjectModel.Collection(Of T) class. My front-end web application is VB.Net 3.5, and the data access layer is C# 3.5. Here is pretty much the sample code I have:
[Code]...
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Apr 22, 2010
I have a form call form1 which is a mdi tab. Within form1 there is a datagridview and a button. When the button is clicked it will fire a method within form1 to update and repopulate the dgv.
Now my problem now is that I have another form call form2 which I load using .showdialog. Whenever I update the data within form2, it will fire method from form1 and update the dgv in form1. However the dgv doesn't seem to repopulate the updated data.
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Mar 26, 2012
I have method that exisit in APP_CODE class and I want to call it from Class Library what is the best way to do that?
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Nov 12, 2010
I've got some debugging code that looks like this[code]...
The purpose of this code is to output the name of the calling method. Now, I would like to output the FILENAME where the calling method resides. Is this information available?
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Aug 26, 2009
I am using a .dll called Kiosk in my application which is resonsible for disabling some keyboard keys. I am doing like this... using Kiosk; public static Kiosk.Kiosk KIOSK = new Kiosk.Kiosk();
[Code]...
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Jul 13, 2010
I am maintaining some VB .net code and noticed that they call a method with a period in front of it. What does that mean?
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Sep 15, 2011
Calling method in anonymous object?This works:
Call (New MyForm).Show
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Aug 9, 2009
Lets say I have a application with these three items:
A startup form called form1
A class lets say Class1
A class lets say Class2
How can I access a method in class2 from within class1? For example in Class2 I have a method call AddToDatabase(sql as string) and in a method is Class1 I have a SQL statement that I want to implement.
Solution that didn't work: Initializing an instance of Class2 in form1 called myClass2 and trying to reach it using: form1.myClass2Initializing an instance of Class2 in New subrotine of Class1 and trying to call it through: myClass2
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Apr 11, 2012
I have a question regarding how can i use a method name configurable to be called.
E.g
1.I have a xml file with three elements looking like this:
<?xml version="1.0" encoding="iso-8859-1"?>
<root>
<element attribute1="a" attribute2="b" attribute3="Send" />
</root>
[Code]....
So after i add the values to the list, for example : element.ThirdElement() will have the value from attribute3 ("Send"). Also element.secondElement() will retain the value from attribute2 and so on.
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Oct 19, 2011
I am writing a alternative to GDI, and rigth now i am working at a logging function. The idea is that while you use the class to draw, it will write a logg of what you have done, which can be used to draw it back later. In that way i would be able to store a drawing with weary little disk usage.
[Code]...
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Oct 1, 2008
I've been creating short test apps repeatedly to try to understand some of the concepts in VB.NET.For the most part it has been illuminating.I read Bucky's .NET knowlegebase tutorial on passing objects as parameters to newly created forms. He shows how to create a new class that inherits from the base form class and define a New() method with parameters Extending the concept I thought about doing the same thing with a form that was created at design-time (In this case Form2).
[Code]...
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