i am working on the MSDN tutorials through virtual labs and am encountering a problem with the very first tutorial regarding consoles. I am required to create two notepad files: Module HelloWorld & Public Class Person which I have done without errors having triple checked them. When the files are created I compile the HelloWorld.vb file and a .exe is created
I follow the rest of the steps and encounter an error when i try to compile the Person.vb file using the line vbc Person.vb/t:library/out:HelloWorldLib.dll as i am getting the following errors:
vbc : Command line error BC2001 : file 'HelloWorld.vb/t:library/out:HelloWorldLib.dll' could not be found vbc : Command line error BC2008 : no input sources specified
I want to place my printcode into a Class, so I can use thise printcode olso for other forms. Also I need the code into the Button, for call the printcode out of the Class.
'print code Dim img As Bitmap Dim WithEvents pd As Printing.PrintDocument Function CaptureForm1() As Bitmap Dim g1 As Graphics = Me.CreateGraphics() [Code] .....
I have just one form which is my project however there is a lot of different code behind it, can I add a class or module to it as another resource and call a script from there like I would in say
Private Sub button1_Click ... Handles Button1.Click Call MyScriptToWorkThingsOutAndGetRemoteXMLWebPage End Sub
I understand how the class modifiers work like public, private, protected, friend and protect friend. They are pretty straight forward. However my question is, if I have a class is marked as friend, what should the properties and methods be marked as? Friend or public? Does it matter? I just want my classes at the lowest exposure level that will let my program work properly and that is friend. If I understand correctly, the public properties of a friend class are available to all members of the assembly. Wouldn't that be the same access level if the properties were all friend properties?The reason that I ask is that using the autocomplete feature to make new properties (type property and hit tab) it creates the new properties with the public attribute.
I am trying to get a handle on SyncLock and multithreading, but I am having some trouble wrapping my head around exactly how it should be implemented. I have a Public Class Utilities with a many Shared Functions. I want to make sure that each function can only be executed when there are no other concurrent calls to the same function. So If I have 2 functions, A and B in a Public Class Utilities, what is the syntax so that a function "locks" while it is being executed, preventing any subsequent calls until the "locking" thread has completed?
CODE
Public Class Utilities
Public Shared Function A (ByRef i As Integer) As Integer
[CODE].............................
I know I need to wrap the statements of execution in a SyncLock block, but I am unsure of the scope of the parameter used with SyncLock...is it private to the function, class, etc? Can the same object be used to lock both functions if they are independent?
I have a situation where I have several VB.NET Modules in the same Logical-Module of a large application. I would like the update function of each module to be public, but I would like users to be forced to qualify the function call with the module name.
ModuleName.Update() instead of Update() Is this possible?
Im new in this forum. I just recently upgraded my Visual Studio 2003 to Visual Studio 2008.I have a web project which is working very well in Visual Studio 2003. But when Im trying to run the same project in Visual Studio 2008, Im getting a runtime error message.The error message is about a public function which is defined in a public module. When Im trying to call that function from different web pages of my project, the web pages are not recognising the public functions and asking me to
I'm working on a project for my VB class at school. I am creating a form with several inputs and it calculates the total amount owed for a car sale. I have a text box for input of the TRADE IN VALUE of a car. the program is looking for a numeric input. If there is no trade in, how can i get this box to default to 0.00 so it doesnt error the program?
I have a public readonly variable in a module, but when I try to set it in my form load event for the first time I get 'ReadOnly' variable cannot be the target of an assignment. It is my understanding that a ReadOnly variable can only be set once and after that you would get an error when setting it.
I wrote a public modules for Insert, Update, Delete for SQL but I want to write public module for show any record on For example
"Listview or ComboBox or DataGrideView" by one module I mean When I create a new Form in vb I don't want to write All Command for each form to show record
Public Sub ShowRecord(ByVal TabelName As String, ?) If SqlCon.State = ConnectionState.Open Then SqlCon.Close() Try
Can one client call a public property within a VB.NET module and see the value of that public property changed by another client accessing it at the same time?
[Code].....
I'm running into random instances where it looks like another client might be modifying (by setting) the value of GetSetDateTime DURING the first client's run through of WhateverMethod(). This is alarming to me and I've been trying to figure out if that's a possibility.
I am writing a control application for an inteface card. The complicated work of initialising communication with the card is written and working fine. However, my problem is to update the text in a dialog label on the communication interface form from a module that contains all the coding for accessing the inteface card. From the module, the interface dll returns data that describes some typical connection errors and the module then calls on Public Subs in the form to display error messages; for example:This is the Public Sub in the Module that initiates communication with the interface card:
Public Sub OpenDeviceInterface() DeviceID = 1 - My.Resources.DeviceID h = OpenDevice(DeviceID) Select Case h Case 0, 1, 2, 3
[code]....
What happens when these Public subs are called from the module is that the MSgBoxes I made to test the routine show up but the label text doesn't appear.I've tried; Refresh, on the label and the form without success...
I have finally got my code all working, but there is just a quick query really. At the moment I have all the database stuff in each form seperatly. When I place it in a global module, it looks like the dataset is being duplicated I was wondering why this happens when I place it in a global module?
This the code I use and the code I would put in a global module
Dim con As New OleDb.OleDbConnection Dim dbProvider As String Dim dbSource As String
I want to created a nested class that can only be visible to and instantiated from the parent class.But I also want to be able to use an instance of the nested class through a public variable of the parent class.I tried making the nested class private, or making the nested class' constructor private, but it won't compile.Is it possible to do this in .NET?
I' ve got a short question concerning BackgroundWorker.Is it possible to have the main code for the BGW in one class and the long process for the BGW (DoWork) in another class or module?
I couldn't find anything helpful on the internet.Here is my code - DoWork in a separate class doesn't work:
I need to convert the following code, so that it exists as a created class "Payroll" that utilizes "Get" and "Set" elements. Unfortunately, I'm completely lost.
Public Class frmPayroll Private Sub frmPayroll_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load