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?
View 2 RepliesI have a question concerning some homework. Here is my answer:
Dim intResult As Integer
intResult= Square(4)
lblResult.Text = CStr(intResult)
Now, if I understand functions correctly, this statement should pass the value 4 to:
Function Square( ByVal intValue As Integer ) As Integer
Return intValue^2
End Function
...and assign it's return value to "intResult".
I've been trying to get the double buffer function working in VB.NET GDI+ for a space invaders game using the following command.[code]But because I am using a separate draw routine attached to a class it doesn't seem to work:[code]The aliens draw correctly but the images are very stuttery and double buffering doesn't seem to work.
View 1 RepliesI'm currently working on an assignment for university and I could really use a hand.I need to plot the equation y=0.2*sqrt(1-(0.25/x)^2)
View 5 RepliesPrivate Function Token() As String
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
[Code].....
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>
View 1 RepliesI have a question about doubly linked list the uses student names and ages and creates them into node objects. the studentItem class is already created for me I just have to create the nodes that will hold each item entered. I am required to fill in the code needed for each function givien in the ICollections library that is setup for me. I dont know where to start out I'm trying to create a NodeLink class and from the class use the information to create the guts for the add function for my Nodelink Function I have the following:
Public Class NodeLink(Of T)
Public node As T
Public NextLink As NodeLink(Of T)
Public PrevLink As NodeLink(Of T)
Public Sub New(ByVal StudentItem As T)
[Code] .....
In vb.net how can i use replace function when the replace from part has double quotes in its value ?
View 1 RepliesI am trying to call the method with the following declaration[code]...
The structs should both be twodimensional arrays with indexes of 4,4 and 5,4 respectively. The second one is an out parameter.
I wrote vba function in excel and I want to call this function in vb.net with parameter passing.
View 2 RepliesLet's says I have a class called Customer :-
Code:
Dim Cust as New Customer("Fred")
I also have a function in a seperate class :-
Code:
Shared Function Example(Example As Customer)
How do I refer to the class itself from within itself? For example :-
Code:
' from within the Customer class, call the Example function
AnotherClass.Example(Me??)
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
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.
View 2 RepliesI 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:
[Code]....
I am missing something obvious here
I have an array that is declared as
Dim
array1(,)
As
[Code]....
MotherTongueTxtBox.Attributes.Add("onblur","val_Length(MotherTongueTxtBox.text,"hi friends",Length);")
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
[code].....
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...
[Code].....
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...
Convert.ToDecimal(textbox1)
How can I pass a NULL value to my 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
[code]....
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.
[Code]...
what i am doing is passing data through to a function, the function does a basic check if the file passed through exists then say so in the listview
function:
Function checkIfCredentialsExist(ByVal Check As String)
Try
If File.Exists("credentials/" & Check) Then
[code]....
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:
[Code]...
i make a function passing array paramters in VB6 Public Function PolCoefCalc(pT() As Double, pU() As Double, pN As Double, pA() As Double) As Double
Dim return as double
returnStatus = 0
PolCoefCalc = returnStatus
End Function
[Code]...
Im trying to pass a array as a argument to a Javascript function from code behind(vb.net)
Code im trying
[code].....
The case is that I have two comboboxes (country and state) and a simple code to populate the state combobox accordingly depending on the selected country. Ok this is simple and easy, and this code is within the country combo change event.The case is that I have more than one pairs of those comboboxes and I wouldnt like to repeat all the populate code into every country combo change event.Actually I would like to have only one function and just call it passing as parameter a reference to the combobox I want to populate. Then I could use that reference into the function.
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