Change Variable Value When Passing As Argument
May 18, 2012is there a way i can do like this in vb.net
[Code]...
what i want is that idx keeps incrementing after each line, without incrementing it on a seperate line.
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Argument Passing In C# And .NET?
Jan 14, 2012In VB.NET, can we pass an original object as an argument without instantiating it? For example, I have two forms in my project formA and formB. Now I have this code.
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Apart from this, in VB.NET in any class like formA, if I type formA, I can see all the objects and controls present there but not in C#. Again, I have to make a new instance to see all the controls. This becomes a problem if I want to manipulate two running and working instances with each other. So what basic thing am I missing here?(I am an amateur programmer migrating from VB.NET to C#. Things are going nice and clean expect for the ones I've recently figured out.)
Passing A Type As An Argument?
Aug 12, 2010I'm using VB.NET 2003 with .NET Framework v1.1. I know it's getting a bit old now but I'm stuck with an existing program and don't have the time/knowhow to convert it to anything newer.
My question would probably be solved very easily with Generics in .NET 2.0 but as I can't use that right now, I'd like to know if the following is possible:
I have a load of manager classes which inherit from DictionaryBase and hold collections of my custom classes. For example, I have a Employee class, a Batch class, a Supplier class, etc... and each of these has a Manager classwhich holds a collection of them - eg: my PlantTrayMgr class holds collections of PlantTrays, etc..
I have one particular form where I have to populate loads of comboboxes with the contents of various Manager objects. What I currently do in my form load event to populate comboboxes is this:
Code:
Option Strict On
Option Explicit On
Private _plantTrayMgr As PlantTrayMgr
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Passing Argument Into Dll Call?
Mar 7, 2010In my vb.net code I want to call a dll file created by Qt4.
Now everything works fine untill and unless I pass some string argument to the function.
Here is the function in dll file:
const char* QtEngineDll::randInt(char url[])
{
QString result;
/*QTextCodec *codec = QTextCodec::codecForName("UTF-8");
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When the function returns some constant value, say if i put result = "Abhijit" then it returns the value properly. But if I want result to return value url the it is returning some garbage values.
Passing Argument To Or From A FORTRAN DLL From .NET?
Feb 1, 2010I have a DLL written in fortran that I know works because I am getting it from a working software package that we use daily. I am trying to call it from anything but am having problems i believe with passing the correctly formatted arguments in and out of it, so i decided to try and access it from a VB program. I chose VB because I have contacted the developer of the software package we are using and he gave me his DLL function call in VB6, even though he is not allowed to show me the FORTRAN source.
Problem is (perhaps, i think) that I am writing in VB.NET, which has different data types than VB6. Can anyone see why i am am having problems. The error i get upon running is: "AccessViolationException was unhandled: Attempted to read or write protected memory. This is often an indication that other memory is corrupt."
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Passing Argument To Shell()?
Jan 5, 2009I'm designing an interface using visual basic .NET with visual studio tool. In my program I have to call an extern .exe using the function shell() and pass a FileName to it. The problem is that what it passes to the executable is never the file path. My code is this one and I think it should work but I don't know why, it doesn't.
Public Class FormMain
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
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Passing Array As Argument?
Feb 28, 2010When I try to do the same in .net the "array argument" value of the second sub is either Nothing or I get an error saying "Value of type 'String' cannot be converted to'System.Array'."I've tried converting the array to a system.array but it will not hold all the Types of data it needs to hold. (I tried 3 days ago and don't remember what Types would cause an error. My 1st value is a string and the second is an integer and this caused some error.)
View 1 RepliesPassing Url Based Argument
Mar 27, 2011I have written an application to register a url type extension at startup so in short if user inputs dld:// in any browser it loads my app now, what I want to do I want to somehow move a bit further like if user goes dld://about the application loads and shows the about page
View 5 RepliesForce Passing Argument Byval?
Sep 16, 2010I have an old unmanaged dll function and I want to pass an array to it.The dll function expects the array to be passed by reference.Sometimes I can do that and sometimes I need to pass a pointer in a variable.Is it possible to override the declare for the function so that I could pass either the array by ref, or a pointer to it if I need to?
View 15 RepliesPassing Command Line Argument?
Dec 15, 2011I am a beginner using Visual Studio Express 2010 to create a small console app to use as a utility accompanying another primary app that can pass a command line to the utility. I would like to set it up so that the utility will not run independently but only run and load its only form (Form1) if it is launched by the primary app using a "/run" command line parameter. (I can set up the primary app to launch and pass a command line parameter. I need help with the utility's code.)
The utility already has some VB code, so I need to figure out what code to add to receive and act on the " /run" command line and even more challenging for me, where to place this new code so it works.
pseudo-code:
initial event to read the command line, then if it is " /run" load Form1, else do not open and run utility app.
BackGroundWorker Passing Argument In RunWorkerCompleted Event?
Jan 15, 2012my current solution as you can see is by using shared variable within a class in order to pass a value.
on the form load of my application i called: workerSample.RunWorkerAsync
Dim finalList As List(Of String)
Private Sub workerSample_DoWork(ByVal sender As System.Object, ByVal e As System.ComponentModel.DoWorkEventArgs) Handles workerSample.DoWork
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Passing A Array As A Argument To A Javascript Function?
Apr 20, 2011Im trying to pass a array as a argument to a Javascript function from code behind(vb.net)
Code im trying
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Passing Structure As Argument Through Files / Functions
Jun 21, 2012I can't get to pass structure as argument through subs/functions in different files of single vbnet project like I use to in earlier MS basic versions.[code]File "mysetup.dat" is reachable and data is saved correctly what I can see with HxD.But read part seem's to not work as expected. Please any help on reliable passing structure as argument without too much public elements based on upper example.
View 1 RepliesVS 2008 - Passing Class As Argument For Function
Mar 23, 2010VB.NET is not letting me dance with both feet, or piss with both hands. I've got one foot and one arm tied behind my back at every turn. I want to use this statement in a function:
Return CType(Formatter.Deserialize(FS), DS)
Seems doable, right?
Function ReadFileStream(ByRef FS As FileStream, ByRef DS As Object)
Dim Formatter As New BinaryFormatter
FS.Position = 0
Return CType(Formatter.Deserialize(FS), DS)
End Function
Right? I mean, CType only accepts a class name as the second argument. I can't give it an instance of a class, or it croaks. Yet if I try to pass the class name as the argument to that function:
DataInfo = ReadFileStream(FileStream1, DataStruct)
VB.NET croaks on this, too, complaining that "'DataStruct' is a type and cannot be used as an expression.". It's used as an expression by CType just fine outside of the function. Does the VB.NET legislature provide a clause that allows for a 'Type' to be passed as an argument in a function? Writing all the supporting code ten million times to deserialize a file using CType ten million times in a large application will get very complicated and tricky very quickly. It should be handled by a routine so that any cases and adjustments that come up can be dealt with in one spot.
When Passing An Object As An Argument To A Method, String Properties Are Populated But Integers Are Null
Jan 27, 2011I have a class and method exposed to a client asp.net app. The class looks like
<DataContract()> _
Public Class Class1
Private v_string As String
Private v_integer As Integer
[code]....
The method is declared as
<OperationContract()> _
Function GetStuff(ByVal bar As Class1) As String
In the client code I create an instance of Class1 and set the values for v_string and v_integer, but using Wireshark to look at the xml being sent to the server only a value for v_string is being sent as part of Class1. I'm guessing this is because it considers the value of v_integer to be null/not set. Here is an example of the client code.
Dim MyService as New Service1.ServiceClient
Dim test as New Service1.Class1
test.P_integer = 1
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how different types are passed/used since Integer is a intergral type and String is a class, but can't seem to work out what to do to fix the problem.
Variable In The Substring Argument Causes A Crash?
Oct 18, 2009I am trying to write an alarm clock and I am working on the input check. now the way I am doing it is first checking to make sure that the input is 0-9 and a : . but when i run the code it crashes at the substring saying
Index and length must refer to a location within the string. Parameter name: length
I don't get why its giving me this error when I replaced it with a static number it worked fine. I don't know why the variable makes it crash.
Dim temp, temp1 As String
temp = TXTinput.Text
For x As Integer = 0 To 4
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Change Default Command Line Argument?
Oct 26, 2011Recently, I just helping my friend for developing game private server, in Game Client there are 3 application is needed, its is a patcher, launcher, and main exe, my friend use open source (C++ language) application for the patcher, the patcher is work nicely, and the launcher is program that launch main exe, its using launcher because main exe is need some argument to run, the launcher is created by me.The problem is the user can be run game directly without opening the patcher, so I want to change default command line (usually "0" / "1") in launcher to 3, and I have the trap if user open directly the launcher
If My.Application.CommandLineArgs.Item(0) = "3" Then
MsgBox("Please Run Patcher to proceed the game!")
End
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.net - FileInfo Passing FileInfo Argument To Method?
Oct 12, 2011I have the following VB function which takes a FileInfo object as a parameter:
Public Shared Shadows Sub Start(ByVal filePath As FieldInfo)
XmlConfigurator.ConfigureAndWatch(New System.IO.FileInfo(filePath.ToString()))
End Sub
In another class I have the following code calling that 'Start' method. But VisStudio indicates there is a problem with the 'FilePath' argument that I'm passing.
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Processes - Start Process Iteratively Or Change Argument Dynamically?
Jul 8, 2009i have used following code to repeat a process creation/close iteratively dim vProcessInfo as new ProcessInfo For i= 1 to 100 dim p as new Process vProcessInfo.Arguments = some"+i.toString() p.StartInfo = vProcessInfo p.Start() p.WaitForExit() p.Close() Next i the above code worked for me successfully. but it takes too much time for process creation and dispose. i had to change process argument dynamically in the iteration. is there any way to change the process argument dynamically. or is there any better method to reduce time.
View 1 RepliesPassing The Value Of A Variable
Dec 14, 2011I am using a function that is provided by the maker of an IO device that I'm using and the call for this device turns on and off the 16 ports on the IO device by sending the value true or false to the board. The call is as follows:
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Passing Variable From ASP.NET To ASP?
Oct 13, 2009here's the snippet of my code that im trying to solve since last week...
icePayment.aspx If (Left(Request.Form("return_url"), 7) <> "http://") Then
errorInput = errorInput & "Invalid return URL path! <BR>" errorExist = True
Response.Redirect("InvalidUrlError.aspx")
Else
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Javascript - Passing Variable From JS
Aug 18, 2011I have a variable that gets a value in a js function. I need to get its value as a double into a vb.net variable. I have tried putting the variable into a label then grabbing it from the label in vb.net as shown in the code below:
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Passing A Value Of Text Box To A Variable
Feb 18, 2010Dim SecondName As String = SecondNameTxtBox.text()Is the above statement a correct one?Here I want to assign the value of the text box into tat "SecondName".If it's wrong, please tell me the correct way to write this statement.
View 1 RepliesPassing Value From Database To A Variable?
Nov 15, 2011how to pass value from database to a variable.
This is my query:
Dim it As String = "Mouse"
Dim itNo As String
SELECT * FROM tblITEquipmentName WHERE equipmentName LIKE '" & it & "%'"
I would like to get the ItEquipmentNo and pass it to variable itNo
Passing Variable Between 2 Forms?
Jun 15, 2010i have 2 forms -> form 1 and form 2
in form 1 -> 1 button
in form 2 -> 1 textbox and 1 button
when I click button in form 1, it will show the form 2..how can i pass the variable (data from textbox in form 2) into a variable in form 1 after clicking the button in form 2 ?
Passing Variable Between Button?
May 22, 2012this is the linkbutton
<asp:LinkButton runat="server" ID="linkId" OnClick="doSomething(10)">ID
</asp:LinkButton>
and this is my sub
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Passing Whole Form As Variable
Jan 15, 2010I know in VBA you could pass an entire form as a varible. Since using global variables are not advised in .net 2008, is there anyway to do this ?
View 9 RepliesVS 2008 - Passing Variable To Sub Dim
Nov 23, 2011Not sure how to do this sub that passes a variable that is used in a Dim.
fill_in_field("main_form.WebBrowser1")
Sub fill_in_field(ByRef WebBrowser As String)
Dim ElementCollection1 As HtmlElementCollection = WebBrowser.Document.GetElementsByTagName("input")
End Sub
Dim ElementCollection1 As HtmlElementCollection = WebBrowser & "Document.GetElementsByTagName("input")"
This is what I would like.
Dim ElementCollection1 As HtmlElementCollection = main_form.WebBrowser1.Document.GetElementsByTagName("input")
Pass A Variable's Name Along With The Value When Passing Through Functions?
Jul 6, 2009I want to know if it's possible to retrieve the variables name from when it was passed into a certain function. For example, if I call parseId(myId) to a function with the signature parseId(id), i can obviously retrieve the value of 'id'. However, is there any way I can retrieve 'myId' as a string (without passing it as another value)? Specifically in vb.net, but I'm interested in how it would work in any given language.
View 3 RepliesPassing A Declared Variable To A Sql Query
Nov 15, 2010I have a public variable that I declared in form1 of an application. I am trying to call that variable in form2 and then pass that variable in a sql query. If I declare:
Public Class Form1
Public payPeriodStartDate, payPeriodEndDate As Date
How then to I declare that variable in form2 and how to I pass it to my sql query.
Here is the code I have for form1: [Code]
and when I debug this form, no data will appear. I'm sure that it's something wrong with how I'm either calling the variable in form2 or in the query. Can anyone offer any assistance on this?