For Next Loops - Displaying Output?
May 9, 2011
I'm new in programming especially in vb.net and I have a problem displaying the following using for-next loops:
1
2 3
4 5 6
7 8 9 10
11 12 13 14 15
16 17 18 19 20 21
...and so on...
Initially I wrote this code
Private Sub Button1_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles Button1.Click
Dim row As Integer
Dim col As Integer
Dim txtNumber As Integer = CInt(TextBox1.Text)
[Code] ......
The output is this
1
2 3
3 4 5
4 5 6 7
5 6 7 8 9
... and so on...
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Feb 2, 2012
The Code has two options. Option one starts with 1 dollar and doubles everyday for 10 days. If this is correct the value should be $1024 but instead it shows double that ($2046)
The second option starts with $100 and adds $100 per day for 10 days. The number should come out to an even $1000 but instead shows $6500
Public Class Form1
Private Sub compareButton_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles compareButton.Click
[Code]....
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Jun 6, 2011
I have a problem with displaying output in listview in windows7. I am populating listview colum using OleDbDataReader from database which has value in string as "1,2,4,6,8,9,10" etc. But when I displays it in listview it appears as "10,9,8,6,4,2,1" i.e in opposite order but only in windows 7 not in XP.
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Dec 2, 2010
I am working on a program where a user either enters "small" or "large" and then the number of toppings. Once the user has done that my program outputs the total cost of a pizza based on user input.
My problem is no matter if I enter LARGE or SMALL into the textbox for size of pizza the output displays "A small pizza with 2 toppings cost: $x.xx"
It also displays the price of the pizza as a small one. So somewhere along the lines it changes everything to be small.
this problem only started occurring after I made this procedure.
Procedure that I believe is causing problem
Function IisUserInputValidSizeOfPizza(ByRef mytextbox As TextBox, _
ByRef errorMessage As String) As Boolean
[Code].....
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Jun 3, 2011
Am I accessing something wrongly or missing onto something?
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Oct 24, 2010
Just moved a .NET 2.0 App from VS2005 to VS2010 and noticed that now when a window containing a WebBrowser tries to retrieve a pdf it thows out an error (unknown file type System.Byte[]). This would usually indicate that Acrobat Reader has not been installed - but open up IE9 and enter the link into the address bar and the PDF displays in the browser without any incident!
Should point out that the app created in VS2005 and installed on Win 7 (actually Server 2008 R2 in 'Workstation Mode') has the same issue.. All works fine in XP and below... Do seem to remember this on a Vista box, but put that down to Acrobat not being installed!
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Feb 26, 2011
I am using Visual Studio 2010 Professional in trial mode... and suddenly the Output window won't show my Debug.Write() stuff. It had been showing it for the past month.I have been using the 2010 version for 30 days (after upgrading from Visual Studio 2003) in trial mode. I just renewed the trial for the extra 60 days, and the "About Visual Studio" window says I still have 59 days left.
I have verified that the application is running properly, without errors. When I purposely generate an error, the Output Window properly shows the error and the stack trace I've already checked my Build>Configuration... it's in "Debug" mode, not "Release". The Debug.Write() text is not going to the Immediate window, either.One other point, I tried running the same application in the Visual Studio 2010 Express Edition, and it complained that it could not debug the specified code, though it did properly build it so that it would run in the build. Could Visual Studio 2010 Express have modified something in my project files to disable the debugging output?
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Oct 8, 2011
the purpose of the program is to display the monthly payments on the loan.My homework is to use do while loops instead of for loop.Here is the code for the for loop.
Option Explicit On
Option Strict On
Option Infer Off
[code].....
Now I'm having some trouble displaying the output using the do while loop, and I'm pretty sure it's a loop problem on my code. However, I cannot seemed to find out what's wrong. I looked at the examples of do while loop in my textbook, but I couldn't find anything useful to my problems of my program.This is the output for the do while loop.
Here's the do while loop code
Option Explicit On
Option Strict On
Option Infer Off
[code].....
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Mar 6, 2011
When I use a For loop in a For loop the Contains Statement dosen't work! Even my custom one! I even tested mine and it works 100% And neither that or the String.Contains function work inside of For Loops And, I know both of them use loops to search through a string.
My function(It will atleast search once):
Function RealContains(ByVal load As String, ByVal needle As String) As Boolean
load = load.ToLower
[CODE].....................
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Mar 1, 2012
What I am trying to do: There are three powershell scripts with different time delays as shown below.I am trying to run them asynchronously in .NET and I followed this article to implement Asyncrhonous programming. Where I am stuck:The I am not able to retrieve output after the events are invoked.The scripts are being called but then the program ends and it shows "Press any key to continue" in console windows.I don't what I am missing here.
Info: JobRequest is a class that I use to pass around information keep track of jobs.
Sub Main()
OurAsyncFunctionCalling("psDelayScript2.ps1", "-arg1 4 -arg2 5", 1)
OurAsyncFunctionCalling("psDelayScript1.ps1", "-arg1 2 -arg2 3", 2)[code]......
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Sep 25, 2011
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Microsoft.VisualBasic.Interaction.Beep()
System.Diagnostics.Debug.WriteLine(3 + 2)
End Sub
Why I don't see in Output window number 5 as output?
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Jun 14, 2012
I'm just going to throw all my code in here in case there's something wrong with a piece of the code not in the "SelectName()" sub.
Module Module1
Dim selectednames As String = ""
Dim index As Short = 0
Dim inarray As Boolean = False
[code]....
Here's an image of what it does (I suppose you can see what went wrong)13 inputs, 3 outputs expected, only 1 output given.As from what I've figured out so far, it's doing the correct amount of loops etc. It's just as soon as it starts generating the "winner" for the 2nd game key it doesn't get a string value from namesarray.Also, why is
For x = 0 To totalnames - 1
Debug.Print("namesarray(" & x & ") = " & namesarray(x))
Next
not giving me a debug output?
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Nov 24, 2011
I have a 5 by 5 matrix I want to populate and I would like to simplify this into for loops. As I understand, I would need 2 for loops to complete this task?
Dim x(4, 4) As Char
x(0, 0) = Mid(key, 1, 1)
x(0, 1) = Mid(key, 2, 1)
x(0, 2) = Mid(key, 3, 1)
[code]....
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Apr 23, 2012
EDIT:I have a ItemList : Dim ItemList As New List(Of String)I wanna append each element from itemlist to a new list for 10 times each, then to start over again.How can I make a loop for each element while there are still elements in the list (10 times each)?I tried this but it's not working.
Private crt As Integer = 0
Private limit As Integer = 0
Private Function getline() As String
Dim line As String = ""
[code]....
but I didn't know where to add the 10 times limit and also the current item number(crt)
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Mar 30, 2012
I'm writing a super small interpreter in vb.net because i need to execute a simple (invented) language so the app understand it and do what ever it needs to do.Everything went well until i reached the control structures and the loops.So my question its, in a code that its executed line by line using a simple for each how can i match the "WHILE ;" AND "ENDWHILE;" and execute the code within it?
The first thing that came to my mind its kind of flag the line of the reader and read the content from that line until find "ENDWHILE;" and the store that to execute late, so keep isolating the code in parts until I've all parts and then execute it.But i'm not so sure how to code it or if my reasoning its correct.PD: I'm using regexs.
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Mar 22, 2011
I did For each Loop in my combobox, but I noticed that it loops twice. When it reaches the last item, it loops back to the first item. I code it typically: For each itm As Object in combobox.Items
[Code]....
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Dec 7, 2009
have a problem where I have an application that allows someone to enter two integers. The app then displays all the odd numbers between both integers and all of the even numbers between both integers. There are two text boxes and two labels: even and odd. How would I code a For..Next loop for this type of app. The part where I get confused is what do I determine and how do I
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Dec 5, 2011
I would like to simplify a do loop.
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Mar 24, 2010
This is for .net frameworke 3.5 and visual studio 2008 in VB.Net.Two things we would like to do: 1) loop repeating node blocks 2) loop (through repeating node blocks) within repeating node block loop
First thing:
How do you loop through an xml that has repeating node block (<STRUS name="1000A") and extract the following node? For example you want to extract the IdentificationCode in the node that has <SVALU name="ZRT" and is from pos="9".So, the following example has the IdentificationCodes (TGJ23, PGA12, TPX12)
<?xml version="1.0" encoding="UTF-8"?>
<DocSplitterReport xmlns:xsi="http://www.w3.org/2001/X .......
<STRUS name="ROOT" lineStart="-1" lineEnd="-1">
<STRUS name="TAC" lineStart="1" lineEnd="194">
<SVALUs>
[Code]...
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Jun 27, 2009
Is it possible to merge two For Loops into one? I need this because I am using two for loops (1 to 100,000) to work with the data in a collection. The problem with this code is that it takes more than two hours two finish:
[Code]...
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Jul 26, 2011
Is there a more efficient way of doing this code?
For Each row As DataRow In dt.Rows
Dim ts1 As String = row(0).ToString
For index As Integer = 1 To 9[code]....
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Sep 30, 2011
Im somewhat new to VB, my first time writing a mildly long program... have a program that will create an unknown number of textboxes, then later I will need it to manipulate those textboxes. I set it up so it names them txt1, txt2, txt3 etc..How can I write a loop that will refer to each of these textboxes by name so I can do what I need with them, ie for example in
For i =1 to x
txti.text = i
next
this would make no sense...how do i write the names correctly so the computer can understate and loop them as txt1, txt2,...?
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Oct 17, 2011
Basically I have 4 empty textboxes. I need to calculate the total and averages of the numbers entered in them. So far, I've declared 4 variables and made it equal to the text that was input by the user. I'm stuck with the calculations tough. The user doesn't have to use all 4 boxes. So if he/she only entered 2 numbers, the total is divided by 2, not by 4 for the average. I think I'm supposed to use a for... next loop because the maximum iterations I should do is 4, but I'm not sure how to the code even if it is supposed to use a for loop. Otherwise, the rest of my project seems to work fine.
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Mar 19, 2012
im new to this site and also a beginner on visual basic During form load, the number items required in the Adult ticket and Child ticket CBO's must be populated with code using a single For Loop.The Items Collection in Design mode must not be used to populate these CBO's1. Movie ticket prices, taxes, and fees are as follows:a. Adult Matinee - $9.25
[Code]...
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Mar 17, 2011
I have visual studio 2008, and we have been given specific tasks to carry our for our course, we have been asked to implement euclid's algorithm by using a while loop, doing so without the visual part of visual basic whatever that means an example of a question they gave was 1)HCF(88,26)=2 how I would go about doing this, as I am thoroughly confused, and deadlines are fast approaching.
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Jul 17, 2010
Trying to figure out how to calculate factorials via loops. Cant seem to figure out where to start when using loops.
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Jun 15, 2010
The below code will fill User Records in "users".
Dim users= From p In oDbUser.USERs Where p.STATE= "MI" And p.STATUS = 1
how can i use a foreaach loop in the result and take each indidual row items ?
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Aug 14, 2010
I have a matrix for example (10 x 10) which represents 10 nodes. The matrix called MyMat(9,9) The rows of this matrix represent the source node (From Node) and the columns represents target node (To Node). It has 14 links which are randomly distributed. The non zero values represent the connections between nodes.
[Code]...
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May 21, 2009
I have 5 arrays named array1 array2 array3 array4 array5. Each array has 5 elements. I want to access each element in each loop via a for next loop the pseudo code would be something like this.
for i = 1 to 5 / this loop calls the individual arrays
for j = 0 to 4/ this loop calls the elements in each array
array (i,j) /do some action on the element here
next j
next i
But as it stands, there is no array called simply array, and I can't figure out how to append the i counter to the word array and thus achieve what I want.
The alternative is to have 5 separate loops, one for each array but I feel sure there must be a better way.
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Feb 7, 2009
I have a listbox on my form which will contain say ten file paths. (10 items in the listbox's item collection)now i want to use the For Each next loop as below
Quote:
For Each Item in mylistbox.Items
performactionon(item.tostring)
[code]......
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