In a case where you would like to reset an array of boolean values what is faster, rediming the array or enumerating and resetting the values? I have run some tests and they seem to suggest that a redim is a lot faster but I am not convinced that it isnt a result of how I'm running the tests.
My tests seem to suggest that redim is nearly twice as fast.So could anyone care to comment on which is faster and why? Also would you expect the same result across different languages?
This is my structure... <Serializable()> _ Public Class AcctRecords Public Amount() As Long Public DateC() As String [Code] .....
This is where I try to create a new instance but I get an error that states: Overload Resolution Failed Because No Accessible "NEW" accepts this number of ArgumentsPrivate Sub FixMasterArraySize(ByVal Cnt As Integer) ReDim Preserve Acct.Master(Cnt) For I As Integer = 0 To Acct.Master.Length - 1 Acct.Master(I).AcctType = New String Next End Sub
If Acct.Master(I).AcctType was a Boolean type there would be no error..
I have the following array in my project that I'm trying to redim without losing the values.The problem with redim preserve is I can only redim the last dimension of the array. I want to redim the 2nd dimension without losing data. How do I get this to work?[code]
[edit]Sorry I left a bad title in this thread - confusing![/edit] Been a long time since I used an array - they are so limiting...But I need to build a simple string array - that I'm passing to a C/C++ function.
Is there any other way to do this other than keep REDIM PRESERVING??
I can't fix following code: Private Sub Dic_List(ByRef sender As Array) Dim L_sender As Integer L_sender = sender.Length / 5 - 1 ReDim Preserve sender(4, L_sender + 200) End Sub Error 1 'Redim' statement requires an array. But sender is an array.
I have an object array that I want to reference. The object array is in a deep set of classes so it takes class1.class2.class3.class4 just to get to it. I need to use this many times throughout my code so I figured I'd just create an object i.e. Dim Obj as Object and reference this array:
Dim Obj as Object = Class1.Class2.Class3.Class4.ObjectsArray
Problem is I can't resize the referenced array, by using the reference. The following does not work:
Redim Obj(5)
How come it isn't referencing my object array completely? is it because its the same object type?
I have this recently converted application from vb6 to vb.net 2008. One of the errors stated is:'Point' is not a member of 'System. Windows. Forms. PictureBox'.I have searched and not found an alternative to this.Also, it says ReDim cannot change the number of dimensions in an array.
I'm upgrading my VB6 project to VB.NET and I found one of the problem below relating to dimensional array.Here's my VB6 coding :
Private Function ConvertMatrixToBase0(ByVal MyMat() As Double) As Double() Dim i, j As Long Dim ConvMat() As Double[code.]...
When i port it over to VB.NET, i encountered error message 'ReDim' cannot change the number of dimensions of an array. for the line highlighted in red. And I suspect that VB.NET need to always define the exact dimension of the array during the declaration. But for the function above, for the array of 'MyMat()', I do not know what is the exact dimension every time it runs, and that is why i need to check the dimension of the array.My question is do we have any solution in dealing unknown dimension array in VB.NET? As in VB6, we can just define Array() instead of Array (,) in VB.NET.
As you will see from the code below I need to be able to tell before the array runs how many members of the array there are or else the program will crash. How can I redim the array depending on how many lines are in the text file (RECORDS.txt)
Imports System.IO Public Class Form1 Structure Nation Dim name As String Dim continent As String [Code] .....
As you will see from the code below I need to be able to tell before the arrayruns how many members of the array there are or else the program will crash. How can I redim the array depending on how many lines are in the text file (RECORDS.txt
Imports System.IO Public Class Form1 Structure Nation
The code below is the entire class that has the error in it... the errored code is highlighted in red. The error is,'ReDim' cannot change the number of dimensions of an array.
Code: Public Class clsMap Dim SR As System.IO.StreamReader Public Width As Integer Public Height As Integer
I have a gridview in my asp.net website that and I use vb for the code behind. Each time a row is bound an even called the Gridview_RowDatabound event is fired. So what I am doing is looping through all the cells in that row: [Code]
Problem is I get an error saying redim can only change the rightmost dimension. It would suit my needs to change both dimensions here as my final result will be to total each column in the array. what other method can i use if arrays don't suit this task.
The following image or RTF file illustrates how I'm trying to transform an input Byte array into an output array of Booleans. This is basically what I have listed below. figure out how to get from one array to the next while shifting values of bytes within 8 byte groupings to shift low order to high order or vica versa. What I mean by that is best seen by looking at the illustration of actual input an required output. The reason for this is that the hardware devices have registers and the display which can be seen in the links above needs to convey the disabled sensor cable cell locations.
when I copied my project and brought it to a lab at school, the code works perfectly. Looks like I have a broken install at home, or perhaps some permission issue.I'm working on a homework assignment. It requires, among other things, that I create a program to read the contents of a text file, write them to an array with an upper-bound of 50, and if is full before the text file is exhausted, to increase the upper-bound by 10. Finally, the program must output the contents of the array into a list-box.Unfortunately, while my program successfully updates the upper-bound, any attempt to output the contents of the array causes an error stating the content of the array is null. Obviously I'm running into an issue when I ReDim the array!
From what I read it is a good convention to name a method that returns a boolean value with the prefix of "is" or "has". So in keeping with this convention I am trying to name a method in my program with this prefix but I am running Specifically I have a class called Day. It is a simple class with a few data members and one method that returns a boolean value of true or false. The name of the boolean variable is isSpecialDay. This class has a method called isSpecialDay which takes the date of the day, applies some criteria to the date and then sets the variable isSpecialDay to true or false. My problem is that the boolean variable is named isSpecialDay and so it the method. What should I do?
Public Class Day Private TheDate as String Private DayName as String
i have an array of booleans whose current boolean values I want to preserve but add additional length to the array? How can I achieve that? My code looks like this:
Dim Array() As Boolean Dim ArrayInterimShort() As Boolean ReDim Array(119)
After Filling a DataTable in GridView's DataSource . A column with check box Type appears but it created as read only column and I can't enable it or make it editable... even i tried .readonly = false and still can't be edited
I ran some code through an automatic translator for C# to VB, and it translated some code like this:Public Property Title As [String]How is this different to Public Property Title As String
I have a datagridview, and I want to get an array of rows, or rows indexes in which boolean column "Aktywny" is set to True.Obviously I can Do it using loop, but LINQ will be much faster for sure...
I've been learning how to implement genetic algorithms in vb, and some sample I downloaded basically does the following in a few places:
[Code]...
I gather that this process could be used to define the size of an array that is not known at creation, but becomes known later in the program. VB2010, however, doesn't like this code at all, and tells me ReDim can no longer be used to this end. Why? And is there an easy replacement for this?
I am using Visual Studio .Net 2008. I am using "Structure" statement for my work. It is working with me perfectly. I am not sure if Understand the structure statement very well because it does give me wrong answer if I change the position of "Redim" of the structure elements. My problem is the structure is using "Redim" in many places which is a dangerous procedure. I do not know how exactly to explain my problem because the structure in my code is used widely and called in many subroutines. I will try to explain with the below simple code:
[code]...
My question is: How can I move the all "Redim" statements outside the loop so that the Redim happens only ones? What does "TheCollection(Iteration + NumberOfMembers).TheResult" does take? Is it zero or what?I searched the web but I could not find a proper website or article which explains the structure. The only useful link I found is this:[url]
I have a public string() array defined, and each time a timer_tick event gets triggered, I loop through the array and visit web pages contained in the array.
for i = 0 to UrlList.Count - 1 ' Do stuff WebBrowser.Navigate(urllist(i)) While WeBbrowser.ReadyState <> WebBrowserReadyState.Complete Application.DoEvents() end while next redim urllist(0) ' I have tried w/ & w/out preserve urllist = nothing array.resize(urllist,0)
I just want an empty array w/ node count of zero. (Essentially eliminating the entire array) I have another process that fills the array.
Im coming from a background of writing vba in excel, but have go to the point where im fed up of having everything running in excel and have started leaning vb.net. i am trying to do something i have done before, but am pretty much rewriting it as having got the end i now see a better way of doing things
Normally Google is full of help full answers but today it isn't, i may be i'm doing something odd or am trying to use completely the wrong tool for the job am happy to be told either.
I am trying to take data from a text file dumped from one of our databases, i have read the (huge) and oddly formatted text file in, converted it to a 1d array = InPutArray
I'm looking for some code (C# or VB.NET preferred) to iterate through all folders in an Outlook mailbox and return the names of those folders. I'm not looking to pop up the Outlook folder dialog, but rather to return the folder names in a given mailbox from outside Outlook.
