Why if I run the following code does the argument in the Add method pass {"foo2", "bar2"} in both method calls?
Dim myList As New List(Of String)
myList.AddRange(New String() {"foo", "bar"})
Add(New RandomClass("blah", myList ))
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what the syntax is for initializing a list of a class, eg:-
Public class myparams
private myno as integer
private name as string
end class
[code]....
A spreadsheet formatter that I made for the department opens and closes Excel spreadsheets in the backround. If someone opens Excel while the macro is running, it stalls the entire program. I need a way to sense Excel opening, then stop it, preferably with a message box saying what just happened.
View 1 RepliesI am used to C like languages such as C#. I added a list box with a list of names. In the code behind I added the below code. When I run the code I am getting the MessageBox but it will state "UserName favorite color is " but does not show the color. I thought it might be misspelled or non-matching names but this is not the issue due to the names being correct.
Public Class Form1
Private Sub lstData_SelectedIndexChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles lstData.SelectedIndexChanged
'Declare Variables
[CODE]...
I want to know what is code can be write for clear all item in list box??..Here i attach my code for looping for.This looping will display are result in list box. For info i am using visual studio 2005.Public Class Form1
Private Sub btnLoop_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnOnWard.Click
Dim num As Integer
[code].....
I wrote this - very simple - function, and then wondered does VB have some pre-built functionality to do this, but couldn't find anything specific.
[Code]....
I am writing a WPF application in VB 2008, and need to establish a connection to another system to get pertinent information and if not exit gracefully without displaying the form. I thought I would be able to do this in the Application classwithin Application_Startup and set some custom properties. However, it doesn't appear I can expose these properties outside the Application class without re-instantiation it, which is bad thing. Even variables set up as Friend don't appear to work either.
View 2 Repliesi have an application which i want the user to have access to forms base on their access right. I have a public module that that take care of the uers access right, but when I call this module from the form load event which return true(user has access to the form) then form load continue OR false(user dont hav access to the form) exit sub to discontue form load. but this is not stoping the form from loading.
'Check for user's permission
pubFormID = 107
'Call procedure
[Code].....
I am working with a third-party COM component (i.e. do not have its code). The method in question has the following outline:
HRESULT GetTableInfo(
[in] BSTR bstrTableName,
[in,out] SAFEARRAY(BSTR) bstrColumnTitles,
[in,out] SAFEARRAY(long) lColumnPos );
I have tried to pass a ref to a fixed-size array ((Array)string[6]) and to a List.ToArray(), but it keeps crashing on me. E.g.
Array arr1 = (Array) new string[500];
Array arr2 = (Array) new int[500];
table.GetTableInfo(filename, ref arr1, ref arr2);
To be more specific: I already tried any value for the size (the correct one should be 44). Tried the same for the capacity of a List<>, but that didn't help either. I also tried different types, but it does not accept any other than int.
I don't know why it keeps crashing on me with a general error of that COM component (basically indicating that something is wrong, yet not saying what exactly), since I can confirm that the following VB code works:
Dim TitleList() As String
Dim PositionList() As Long
Call objTable.GetTableInfo(txTableFile.Text, TitleList, PositionList)
Here are the facts: Consider the following program. Sub Main()
[Code]....
Compiling the program in Visual Basic Express produces no errors. However, if the program is imported into the Excel Developer environment; I get the following error: Expected: end of statement with the equal sign highlighted. A side comment: About eight years ago, I wrote a Visual Basic simulation program to study financial trends. I found that version of Visual Basic user frendly! I find the 2010 version very difficult for doing simular projects.
I use the splash screen of the vb.net found on windows form.Is there a way that i could put an initializing while my splash screen is running?like other programs do instead of progress bar.
View 16 RepliesI'm using a structure to hold three arrays:
structure myStruct
dim arrayOne() as char
dim arrayTwo() as char
dim arrayThree() as char
end structure
But how do I go about setting them a value, I've got my instance of myStruct
dim aStruct as new myStruct()
If I try redim, it just tells me it can't change the dimensions of an array, so how do I got about initializing the arrays with values?
I have a form which i want to prevent from loading during the form initializition. which of the form event handles form initialization in VB.NET.
View 8 RepliesI have a winforms app that checks user credentials as it starts.If autharization fails I want to close the app.So I have been using the following
Public Sub New()
_CurrentUser.GetuserDetails
If _CurrentUser.IsAuthorized then
[code].....
I'm trying to return an array of strings from a function, and got surprised by an error.
I would have expected this to work, but it produces an error:
Public Function TestError() As String()
Return {"foo", "bar"}
End Function
[Code]....
I guess I'm unclear on the meaning of the {}'s - is there a way to implicitly return a string array without explicitly creating & initializing it?
Recently installed Visual Basic Express 2008. Install went fine. If I try to open the toolbox (from any of several locations), a meesage "Toolbox Initializing..." appears in the status bar, then after 15-20 seconds, VBExpress simply closes.
View 2 RepliesI tried to initialize a textbox value by using the .Text property
Textbox.Text = 0
But Im getting the error Option Strict On disallows implicit conversions from 'Integer' to 'String'.
My first try was to init performance counters in an array, which didnt work. Then I read up on performance counters and from that reading, the constructors are such that performance counters cannot be put in arrays. What does one do for multiprocessing?
View 6 RepliesWasn't exactly sure how to word the title of the topic the best without making it a really long title, so I just stayed with a brief general topic to lure you guys into it .Anyways, I am using VB.NET and I have a PictureBox inside a panel that is not initially visible. Whenever a user clicks a button, I set the panel to visible, and I use Direct3D9 to render to the PictureBox but it does not work right when I set the panel to visible. I added a PictureBox_Paint function to handle the Paint event, but nothing. An interesting thing is if I sleep for about 1 or 2 seconds after I set the panel to visible and before I draw the picture with DirectX, it will draw it on. So it must be something when it is first setting it to visible that is affecting it. I do not have an actual image inside the picturebox, I am just using it to draw with DirectX.I'm not exactly sure what events are called right when you set the picturebox to visible.
View 6 RepliesI am initializing direct draw by the following:
vb
GraphicsCard = New Device
GraphicsCard.SetCooperativeLevel(Me, CooperativeLevelFlags.FullscreenExclusive)
Dim description As SurfaceDescription = New SurfaceDescription
surface to DirectX
Now the above works fine... for a fullscreen direct draw app...however i want to make a non-fullscreen app... how can i do that?I have tried several things with no avail and i also want the app to keep drawing when it does not have focus?
It has been way to long since I have been involved in VB so I need some help here. I have the following in my C# code
[Code]...
Is there a way to have a class collection of inherited types be initialized? For example, here is my code:
Public Class CamryCar
Property Name As String = "Camry"
Property Color As String
End Class
Public Class RedCamry
[Code] .....
I prefer this one as I don't have an extra property to deal with. But I can find a way to initialize that that list with objects of RedCamry and BlueCamry. Is it impossible or is there another way to do this?
In VB.Net is there any difference between the following three ways of initializing object variables
Method 1
Dim commandObject As SqlCommand
commandObject = New SqlCommand("MadeUpCommand")
Method 2
Dim commandObject As SqlCommand = New SqlCommand("MadeUpCommand")
Method 3
Dim commandObject As New SqlCommand("MadeUpCommand")
Is one more efficient than the others, or are they effectively all the same?
I've got some code that looks like this:
If ediFileGroupAbbr = "NIPDSINV" OrElse ediFileGroupAbbr = "WWPDSINV" Then
Dim p As New PrivateBillingAdapter_ForN(ediFileGroupAbbr, businessLocationID, mode, EDIJobItemLogID, BusinessUnitID)
Return p.ProcessEDI(True, False)
ElseIf ediFileGroupAbbr = "FOPDSINV" Then
[code]...
to which I'm passing in a value of ediFileGroupAbbr = "FOPDSINV". But the code is executing as if it's dropping into the third condition (p is a PrivateBillingAdapter). So I've stepped into the code and, sure enough, it drops into the second condition. BUT, if I step into the execution of the constructor, the debugger jumps to an odd place in the code - sort of the middle of a method and not on any actual line of code.A couple clicks and it hops back out of the constructor, still in the second block of code. But if I mouse over the variable p to see it's type, boom, its a PrivateBillingAdapter (from the third block).Like I said, something is clearly wrong but I don't know what. I've tried rebuilding several times but with no new results.This is VS2003, framework 1.1 with VB.NET.
I am creating a desktop application in vb.net by using visual studio 2008 and using ms sql 2008 as back end for my database.As I am creating application on my own system I know my connection string and I have created database manually on my system.
What I want is, when user install application on its system, the database created dynamically at that time on his system and he must enter server name, username and password for ms sql server that application should store for future use.If not at installation, it should atleast check and create database, everytime the user open the application.
Beginner question. How come I can do this:
Public Class Form1
Private StudentsInMyRoom As New ArrayList
Public name As String
[code].....
I am trying to install a 64 bit windows service application and I get the following error:Error 1001. Exception occurred while initializing the installation: System. BadImage FormatException: Could not load file or assembly 'file:///C:Program Files or one of its dependencies.An attempt was made to load a program with an incorrect format.
View 2 Repliescan i know what code that enable me to list all currently running process and get their path and list all the path in listbox1.
View 2 Repliesive got a college project and I've tried to make it seem quiet realistic, i've added a menu strip, and I don't know how to code an option in the list. Does anyone know how to code it?
View 5 RepliesI need to know how to code percent in my list box for example: 5, 5.25, 6, 6.25 and so on.This is for visual basic express edition 2008
View 3 Replies