For Loops In VB?

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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Monthly Payment Calculation, For Loops To Do While Loops?

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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Contain Functions(They All Have For Loops) Don't Work In For Loops?

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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Use Loops In .NET?

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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Doing Loops In .net Using Regexs?

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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For Each In Combobox - Loops Twice

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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For..Next Loops VB 2008?

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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How To Simplify Loops

Dec 5, 2011

I would like to simplify a do loop.

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Looping Through Loops In XML?

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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Merge Two For Loops Into One?

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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More Efficient For Each Loops?

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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Using Names In Loops?

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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Calculating From Multiple Txt Using Loops?

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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Cinema Tickets Using Loops?

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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Euclid's Algorithm And While Loops

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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Factorial Calculations Using Loops?

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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For Each Loops With Resultset From LINQ 2 SQL?

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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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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For Next Loops Displaying Incorrect Value?

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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How To Avoid Loops In Networks

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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How To Reference Arrays Via Loops

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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List Boxes And For Each Next Loops?

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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Loading Array Using Loops

Mar 12, 2012

firstly this is not exactly a problem but more like a quiz. I have 3 arrays which I will load data into from a dataset, in the future this set of data might expand and the code will get excessively long, how can I load the data as seen below using loops without using additional array?

[Code]...

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Multiple Loops To Create XML?

May 22, 2009

create an XML file from a large Oracle dataset. The Oracle dataset contains an ID column and a bunch of different address types. For example, An ID will contain a primary address, secondary address, and a bill to address. Each of the three address types can have multiple addresses but I'm only retrieving the first three.Currently, I'm retrieving three of each address type then joining all of the data together. If I continue with this method, I would have to loop thru the dataset to find the ID and then loop thru the dataset again to find each address for each address type. This doesn't seem very efficient and I'm wondering if there is a better way to do this. Is there a better way to manage the data on the oracle side so that I can have one row for each ID? Or is there a better way to handle this on the .net side with collections and manipulating datasets?

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Multiplication Table By Using Loops?

Mar 11, 2008

I have an assignment to make a multiplication table using loops. The idea is to make this: If the user enters 3 this is the result he gets:

0 1 2 3
1 1 2 3
2 2 4 6
3 3 6 9

if the user enters 5, this is te result:
0 1 2 3 4 5
1 1 2 3 4 5
2 2 4 6 8 10
3 3 6 9 12 15
4 4 8 12 16 20
5 5 10 15 20 25

[Code]...

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Nested Recordset Loops In ADO.NET?

Feb 2, 2009

How do you do nested recordset loops in ADO.NET? In ADO, you could just open one firehose cursor for the outer loop and a static, client-side, read-only cursor for the inner loop and nest the loops. But you can only open one DataReader at a time and Datasets aren't read-only.

'Classic ADO Code
Dim rsOuter as New ADODB.Recordset
Dim rsInner as New ADODB.Recordset

[code]....

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Parallel For Loops Framework 4

Jan 11, 2011

Im trying to learn how to use a Parallel.For loop. Ive got a big for loop, that i need to run parallel, and am trying to use a Parallel.For loop for the first time. When I try using this code, I get that it cant be called using these arguments. The old way to write this would be:[code]I dont need to return anything to the for loop, Im just trying to iterate m, running in parallel. Where am I going wrong?

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Text Doesn't Appear Until Loops Are Done

May 31, 2010

when I run my event below the "sending commands.." text doesn't appear until my loops are done, even thought the complier shows it goes to my Label1.Text line first.. why? I want the message to appear while it is looping. [code]

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Timers And Loops Does Not Wait

Sep 5, 2009

I am using vb 2008 I am trying to learn loops and timers but I have some problems. [Code] The problem with this is it does not wait it just sends 123 all at the same time. I tried using the other way the one that makes the program freeze for the amount of time I want it to wait, but I don't want the program to freeze I want to to move my mouse ext whilst its doing it. as for the loop this is as far as I got I cant really test it yet cos my program is typing 123 a million times a second and my pc doesn't like that so i need to fix the timers. [Code]

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Use Loops To Display Numbers?

Oct 9, 2009

how to I use loops to display this?

[Code]...

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