How To Access Variable Located In Private Sub On Same Form
Jul 25, 2009
How to access a variable that is located in a private sub and then display that variable in another private sub located on the same form.
My actual code is:
Public Sub Button4_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button4.Click
Dim strFileName As String
strFileName = OpenFD.FileName
OpenFD.InitialDirectory = _
[Code] .....
Obviously, the sub in blue has nothing in it currently and so this is the one I would like to access the variable in. The variable I want to use again is 'FILE_NAME'.
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Jan 12, 2012
Is it possible to set a variable in my custom class for Private Read/Write access and Public Readonly access without creating Properties with Get and Set? In other words, from within my class I want full access and from my form I only want read access. Right now I declare my variable as either Private or Public to control Public read/write access. I tried googling my question a bit but I'm not sure what the correct terms even ar
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Jan 9, 2009
Trying to understand the best way to do this and I'm can't get it figured. Here's basically what I have:
Public Class CardParsingClass
Private iAcctIDStart as integer
Private iAcctIDLength as integer
[code]....
I've only included 2 of the class level fields here but there are actually 30, so that's why I was hoping to be able to send the name of the field to set and the value to set it at in the SetValue function. So in some other routine in the program I'd like to be able to issue the following call:
SetValue("iAcctIDStart", "3")
But then when I get into the SetValue routine, I'm not sure how to proceed. I thought about a case statement that would basically be this:
select Case strFieldToSet
case "iAcctIDStart"
iAcctIDStart = cint(strValue)
[code]....
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Jul 23, 2010
if for example i have two private sub I declared a local variable on private sub a... is there a way that private sub b could use the variable created on private sub a? Im asking because im in a problem in my app were using global variable is not an option to make the long story short
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Jun 29, 2010
I can make the compiler give me an error (Use of variable prior to assignment) with:
private sub Test()
Dim ord As Order
Dim ord2 As Order
[code].....
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Feb 25, 2010
I am trying to access the controls' properties on another form without having to modify the code of the other projec (the one containing the controls that I want to access) because it is already compiled as a DLL. In this DLL that I am trying to access, the functions/sub-procedures are all declared as private. Would there be any way of accessing the controls' properties without having to modify the DLL? Basically what I am trying to do is create a sort of console application wrapper for the DLL that would create a new instance of the DLL's form and then make certain checkboxes checked and click certain buttons. Basically, I am trying to automate the form as it currently exists.
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Feb 6, 2011
why don't we declare a variable for instance variable with dim not private?
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Apr 1, 2012
I have default.aspx used masterpage, in master page i have a control called DefaultMenuContent, this control have a dropdownlist with autopostback, the problem is loosing the selection even if i use Is Not PostBack in control's load event, how to persist the dropdownlist selection?
In Master:
<asp:ContentPlaceHolder ID="MenuContentPlaceHolder" runat="server">
<art:DefaultArabicMenu ID="DefaultMenuContent" runat="server" />
</asp:ContentPlaceHolder>
[code]....
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Aug 25, 2010
I have to connect Access DB located in web server with VB.NET Windows application.
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Jan 29, 2011
How do I access a file located directly in my bin folder via a relative file path?
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May 10, 2012
I'm working in VB.net and I want to create a generic ToString. is there a way to do a "For Each" in "Me".
[Code]...
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Aug 23, 2009
I have a public variable which seems to be going out of scope. I am confused as it has been dimensioned as a public variable: Public xlCell as As Microsoft.Office.Interop.Excel.Range
I originally had all my code in the same module in the same project and it was wrapped within a For/Next Loop (Example 1). I decided to clean up my code and make it more modular (Example 2). All the code is still in the same module in the same project.
Upon doing so, my public variable is not recognized in any of the private subs that I have created. I keep getting the following error: Message="Object reference not set to an instance of an object." When I test the variable using ?IsNothing(xlCell) in the Main Sub I get False in the main sub. this tells me te variable is recognized. However as soon as the Call SelectCaseSub() is triggered, I get a True value for ?IsNothing(xlCell). Why is this? Shouldn't this variable be in scope regardless?
[Code]...
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Dec 15, 2011
I tried to access a variable using a module with this code:
Module DataModule
Public x As Integer = form1.trackbar.value
nd Module
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Sep 28, 2009
I come from C# (use VS 2005, .NET 2) and I know that when I declare a private variable I can "extract" from it the corresponding "property". In VB.NET I've declared a lot of properties (in the diagram class designer). Now am I forced manually adding the corresponding private fields?
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Jun 24, 2010
I don't know if this has been asked before, but we're having a discussion about it today at my job. Should private variables (that are shared/static) be instantiated when they are dimensioned/defined, or is it a better practice to do this inside of a constructor?
Public Class IpCam
Private Const HOST As String = "http://test.com/url/example"
Private Shared _Example As New OurClass(HOST)which one to use?
[code].....
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Jan 3, 2012
I have about 60 Child forms
Each have a variable with same name.
In Main form I want to set the value of the variable of the active child.
One way of doing that is like
Select Case Me.ActiveMdiChild.Name
Case "formName"
frmformName.Variable=0
I donot want to do that as it involves writing many cases and I may miss some.
Is there some other way of doing it .
I tried
Dim O as Object = Me.ActiveMdiChil
O.VariableName= 0
and its various variants but its not working
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Dec 30, 2009
When referencing class properties from a function within the class do you use the value from the actual property or the private variable value?
public class
private m_Foo as double
public property Foo() as double
[Code].....
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Apr 22, 2010
On one side, in Vb.Net when you add an event handler to an object the created method is named: <NameOfTheObject>_<NameOfTheMethod>.As I like to have consistent syntax I always follow this rule when creating event handlers by hand.On the other side when I create private variables I prefix them with m_ as this is a common thing used by the community, in C# people use to put _ at the beginning of a variable but this is no CLS compliant.
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Jan 15, 2012
I have a DataGridView that is embedded in a TabPage of a TabControl and the TabControl is embedded in a SplitterPanel of a SplitContainer and the SplitContainer is embedded in a ToolStripContentPanel of a ToolStripContainer which is on a Form. I want to get the name of the form the DataGridView is on, how do I do this?
Note: Sometimes in my application the DataGridView will not be embedded in any control other than the Form. So I would need this code to work no matter what the DataGridView is embedded in. For example, if I send my DataGridView as an argument to a function how can I get the name of the form the DataGridView is located on?
[Code]...
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Sep 27, 2010
I have this main form, that uses dll's to get information. One of them is to have a preview of a video. So the one dll has its main class, that contains this.[code]...
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Sep 20, 2009
How can I get access in a fast way to the single bytes that form a double variable?
In pseudo-code I want to do something like this:
Dim myDouble as Double
Dim myArray(7) as Byte
myArray = myDouble
'continue doing things with the single bytes
The code is meant for use in a I/O-handler. The double-variables have to be sent / received via TCP. For this purpose they shall be put into / assembled from I/O-buffers.
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Apr 25, 2012
I am new to VB. I have created some labels/textboxes in my Form1. I use them to do some calculations. Basically, this is my calculation area (in Form1) and then I want some of the results that have been calculated and showed in these texboxes to be shown in labels which are in another form (Form2). So here is what I have done in terms of coding:
Label12.Text = Transactions.ComboBox1.SelectedItem
Label13.Text = Transactions.ComboBox2.SelectedItem
Label14.Text = Transactions.ComboBox3.SelectedItem
Label15.Text = Transactions.TextBox1.Text
Label16.Text = Transactions.TextBox2.Text
These codes are in Form2 and Labels 12-16 are in my form2 as well. My form1 is called Transactions as you can see. Everything looks OK, when i run no errors, also when do the calculations and I go from form1(Transactions) to form2, labels 12-16 show the results from form1 but the problem when I go back to form1 and change the values and go back to form2, the labels 12-16 are not changed. They simply show the old values regarding of the fact that they have been changed in form1. So how can I make form2 to show them correctly, to refresh the form or what?
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May 23, 2012
show me how to Load an Image that is located in a Folder created on a nother Form. Public Class CroppingForm Private Sub CroppingForm_Load(sender As System.Object, e As System.EventArgs) Handles MyBase.Load PictureCropper.Picture = Image.FromFile(MainForm.CurrentFilePath, "PreView Photo.bmp")
End Sub The Image that is sepose to be loaded into PictureCropper is named "PreView Photo.bmp"
By using: PictureCropper.Picture = Image.FromFile(MainForm.NewImage)the Image is being loaded correctly.
Unfortunately this is going to be a problem later on, for a Image with a diferent name will allso have to be saved to the before mentiond Folder. That is the reson for var."CurrentFilePath" it mast hold te Folder Path only "D:DIY.ID Photos"
[Code]...
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Jun 7, 2009
I need to press a button on a web page that is not located within a form, so how do I press a button according to its html element ID?Here is the HTML for the button by the way.:
<input id="i0011" class="css0088" type="submit" value=" Sign in " name="SI"/>
I had to use the code tags.
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Jan 9, 2012
I want to have a DataGrid in a form Docked as Fill, and have it located below the ToolStrip.What I mean by Docked as Fill is I want to be able to resize the DataGrid along with the Window Form.When I select Dock as Bottom, the space between the DataGrid and ToolStrip changes as well.
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Sep 25, 2009
So I was creating a little object model the other day and it turned on me that I could not use Private og Public inside the interface class.
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Sep 27, 2011
I have an API that I created and currently utilize successfully in C#. I am trying to create an example of interacting with the API in VB.NET (so that the QA without C# experience can still utilize it for creating automated tests).
In C# I do the following
[TestingForm(FormName= "Land Lines", CaseType= _caseType
, Application= ApplicationNameCodes.WinRDECode, HasActions= true)]
public class LandLines : RDEMainForm
[Code]....
This gives me a compile time error because it claims that FORM_NAME and CASE_TYPE is not defined, even though the class has it defined inside.
How can I use the defined constants inside the class in the class attributes?
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Aug 1, 2011
I'm using VS 2010 Professional built-in test cases. I've got a class that has a read-only property that looks something like this:
Private _server As IServer = Nothing
Public ReadOnly Property Server()
Get[code]......
In my test cases I want to make a fake server implementation so I can test some of the class methods without actually hitting the server. I've looked around and have seen the InternalsVisibleTo attribute, but that seems to only allow access to Friend-level members. Is there any simple way to get access to these members, aside from declaring them Public/Friend?
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Jan 25, 2012
Below is the class with a property.
public class abc
{
public int MyProperty { get; private set; }
}
What's the benefit of typing private access modifier in setter ?
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Apr 24, 2010
I am wondering if there is a way that I can add a form to my DLL and keep it private to the dll? I have a class which handles communication. I would like to be able to call a status form that would have a progress bar on it to show the status of a file upload and perhaps a form for handling comm settings.
The class is public with several public methods and properties but I do not want the form to be available outside the DLL. When I add a form to the project it is set to public and when I change it to private it tells me it must be inside another class.btw any methods used must be supported by CF V2 as this will be ran on Mobile devices.
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