It looks like passing a list's enumerator to a function "byval" is quite different than passing it "byref". Essentially, regular "byval" passing will NOT change the caller's "enumerator.Current value", even if the function advances the enumerator. I was wondering if anyone knows why this is the case? Is an enumerator a primitive like an integer, without an object reference, and hence changes to it don't get reflected in the caller?This function is byval, and gets stuck in an infinite loop, spitting out "1" message boxes, because the enumerator's "current" never advances past 5.[code]The difference between the two functions is only whether the listFirstItem__ function accepts a byval or a byref enumerator.
I have implemented inheritance for two parent classes called Table and Field. Each parent class has several child classes. In the Table parent class, I created a method that expects parameter List(Of Field).
I get an error when trying to pass in parameter List(Of ChildField) to the method that expects a parameter of List(Of Field). The error message is as below:
Value of type 'System.Collections.Generic.List(Of com.hlb.icisbatch.data.ChildField)'
Dim Length As Byte Length = 10 Dim Chars As Char() = New Char() {"a"c, "b"c, "c"c, "d"c, "e"c, "f"c, _
[code]....
is the above bolded line a correct .. it s not working too and the above code is used to generate a random password for users which should be displayed on the text box?
I am having a problem figuring this out. The text that is bold is where the problem is.
Imports Microsoft.Win32 Console.WriteLine(WMILookup("Win32_Bios","SerialNu mber")) Private Function WMILookup(ByVal WMIClass as String,ByVal WMIItem as String) As String
I have a .aspx webform, with code behind to handle data entered by user, most fields are in double.At business layer, at other class, let say there is a function: [code]I just wondering whether this is the correct way of writing it? And if I have more than 20 fields of double value, then I should declare additional 20 double value?
I have a function that search database based on the 2 textbox value. I have a difficulty to call the function and pass the text box value to the function. This is my function: So I get this error: {"Object reference not set to an instance of an object."}
Function getname(ByVal SearchedName As String, ByVal SearchedFirstName As String) As String Dim temp As New System.Data.SqlClient.SqlCommand Dim temp2 = "" Dim sSQL = " select SearchedName, SearchedFirstName from student where SearchedName =@SearchedName AND SearchedFirstName = @SearchedFirstName" [Code] .....
I have function in my asp.net/vb application with following signature:Public Function ExtractText(node As XmlNode) As String..I want to call it/pass xmlnode. How to create an Xml node with value:<mynode Id="7743" Type="context" StartNode="4356" EndNode="1234"></mynode>
I tried utilizing a collections Enumerator inside of a USING block to take care of the Enumerator.dispose call for me, however, I'm getting NullReferenceExceptions when trying to access the Enumerator.Current property after doing a MoveNext.
pass an array to a function, like the code below shows
Private Sub SomeFunction(ByVal PassedArray() As String) For i As Integer = 0 To PassedArray.Count - 1 Debug.WriteLine(PassedArray(i))
[code]....
But is there a way to pass a constant array to a function in VB .Net, for instance in PHP you could write
function SomeFunction($array) { for($i=0;$i<count($array);$i++) {
[code]....
So to reiterate: Is there any way to pass a constant array directly to a function in VB .Net? Is there any benefit in doing so? I imagine a few bytes of memory could be spared.
PS.SomeFunction({"some", "array", "member"}) ' this obviously gives a syntax error
I am trying to use a simple quicksort routine for a multidimensional array but cannot figure out the syntax. I am stumped because it works fine in VB6 but no luck in .Net
Array Declaration: Dim sArrIn(25000, 3) As String 'sort key (pkg, kitting, zip), kitting, data Function Call:
in the above statement val_length s a javascript function in tat function the first parameter shd b the contents of the text box ,the second parameter s a string type, is the statement correct i think it s wrong can u suggest a correct valid statement
Trying to generate a Datagridview based on a query which is working fine.
Basic method is:
Create DbAdapter (MySQL) Create DataSet Fill Dataset with DbAdapter.Fill Set Datasource of DG to Dataset Works fine, have used a commandbuilder to handle updating, inserting and deleting. Where this doesn't work is if I pass a MySQL function in my query, e.g.
SELECT FROM testtable TestID, SomeFunctionForward(someproperty), anothersfield
A quick check shows the field omitted from Update and Insert. How do I go about 'setting this property' so it will work on the query with the CommandBuilder. It needs to be done in inverse, i.e.
INSERT INTO testtable TestID, someproperty, anothersfield VALUES SomeFunctionBackward("somepropertyvalue"), "anothersfieldvalue"
i have a very simple problem but i can't figure how to fix it.I'll explain, i have 3 array named "Auto, Legumes, Films". I i making a function so whenever the selecteditem of the combobox change(Auto, Legumes or Films) the name of the selecteditem is passed to a function. The function use this name to display the items of the corresponding table in a listbox.The 3 different item name in the combobox match the name of the 3 tables, so i want to be able to re-use the name dynamically in my function.
Code where i call the function: Private Sub ComboBox1_SelectedIndexChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles cbchoix.SelectedIndexChanged
This maybe academic but I'd like to be able to pass the MethodBase.GetCurrentMethod() to another function. That way I could split apart the different parameters in one place. What I'm currently doing is something like this...
Sub SomeSub() Try 'Some code that does work for the app...
I have a Function within a data access layer, which accept a number of parameters. Among these is a decimal value, but in some cases the decimal value with be NULL, here is the code from the function
I am using the following code in my code file to pass the value to the function...
I need to convert the following C# code to VB.NET:
public bool TryGetRewriteMatch(UrlContext url, out RedirectMatch match) { // NOTE: Normally this would use regular expression matches, cached database
[Code].....
However, I need to reference Url and ProductID in the function and I don't know how to pass them as parameters or get their values from the original function.
I'm trying to establish a connection to my SqlDatabase while getting the connection string from a function. This will eventually lead to dealing with the appconfig file, but for now I'm just getting the basics established.
Imports System.Data.SqlClient Public Class Form1 Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
I'm making the transition from VB6 (at which I was quite proficient) to VS2008, and I'm running in to a few 'snafoos' as I go. The most recent one (which I haven't yet been able to work out) is I'm trying to figure out how to pass a control (specifically a 'picture box' if that matters) to a function in a seperate class. This was pretty straight forward in VB6, but for the life of me, I can't seem to figure out how to declare the subroutine.
I have these variables as shown below. The FadeMode is assigned on of the 3 integer values. I would like it to work like an enumerator, so that when I working with the code editor, IntelliSense offers a choice of the 3 possible values. Like x = Fademode.FadeOut
Const FadeIn As Integer = 0 Const FadeOut As Integer = 1 Const FadePause As Integer = 2 Friend FadeMode As Integer = FadeIn
If I am using an enumerator to parse a collection such as
Code: ''' <summary> ''' Checks to see if Node1 is a direct child of Node2 ''' </summary>
[Code].....
The object comparison of Enumerator.Current and Node1 passes an option strict check, but should I for readability and or for any other reason cast it to the correct type? I know their object references will ultimately be checked the same way, but is it generaly bad form to assume this?
Second question. I recently came across the use of the Enumerator v/s a For/Each loop through the collection, does anyone know the pros/cons of the use of either in specifi situations. Where one is favorible to the other or where they should or should not be used?
I'm a beginner when it comes to Visual Basic coding and I need some help with an error I'm getting. I'm trying to pass a structure array to a function to figure out a student's grade. I'm getting the error that 'QuizOne' is not a member of System.Array. Here is my code:
