VS 2010 - Adding To Array Using Loop
Sep 30, 2010
What I'm trying to do is write a program to store my sports cards collection. Basically, just a forms based program that stores various data into files. Where I am stuck at the moment is I have a piece of code that opens a form to add card brands. It has a text box, and ADD button and a CANCEL button. What I want to do is be able to type a brand into the textbox and have it store it in a array when the ADD button is clicked, then allow another entry for another brand and have it stored into the array when the ADD button is clicked and so on until the CANCEL button is clicked. Then I would like for the data in the array to be written to a file. Where I'm having the problem is I can enter a brand name into the text box but the loop keeps adding that same brand name into the array.
Imports System.IO
Public Class AddCardBrand
Private CallingForm As Object
Private Sub btnAddBrandCancel_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnAddBrandCancel.Click
Dim form As New StartScreen()
[Code] .....
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Dec 13, 2010
having a bit of trouble with a bit of code. This is going to be a bit complicated to explain so i hope i can get the idea across. The idea is that the following bit of code uses an array called "lines" which has been loaded from a text file in a previous subroutine. I then want the status of each Checkbox to edit a set of lines in the array.
[Code]...
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Dec 31, 2010
i have data in an array list called txtarray which contains numbers, how can i loop through the array list and convert the values from into a integer variable?
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Jun 10, 2010
I am making my first windows forms application in VS2010 and I am having trouble with arrays. I have code that dim's an array 'TabSiteInfo(2,20)' as a string. Then, I have a Loop that adds records to the array. The problem is that my array is not filling values from the loop. I know VS2010 handles arrays differently, but I have this same code working fine for me in VS2008 ASP.NET application. Below is a sample of the code.
[Code]...
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May 3, 2010
I have written a function that gets the alexa ranking of a given url, now this function works perfectly but I want to loop through a ListView of urls and grab the alexa rank of each item (url) with my function.The code works great if I put a MessageBox in the loop to test that the function is returning a value but when I remove the MessageBox the loop does not work.I need it to loop through adding each result without a MessageBox stop in each loop.
vb
For Each Item In ListView1.Items
Dim result As Integer
result = GetAlexaRank(Item.Text)
[code].....
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Aug 13, 2010
I'm trying to lern VS 2010 from VB 6 and one of the things i'm hawing a problem whid is control array.In vb 6 if you create a text box it's named "Text1" and if you yust copy it and paste it it renames to "Text1(0)" and the new one's name is "Text1(0)" and the code would lock like this
[code]...
then it would print for each loop the random result in one of the text boxes corresponding to i.
How do i do this in VS 2010?
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Jun 21, 2010
I'll try to be brief, In short im trying to add together a variable, (name = STRFinValue) within a For loop, I think the syntax should be:
STRTotal = STRFinValue +STRFinValue(f)
But I am very wrong.
Private Sub btnLBTotal_Click(ByVal sender As System.Object, ByVal e As System.EventArgs)
[code].....
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Jul 11, 2009
I have a text file (*.txt) with a name in each line, like this:
Joe
Dane
Lisa
Kelly
Now I want each name added with a number from 1 to 99.
Like this:
Joe0
Joe1
Joe2
[code]....
I have folowing code:
For n As Integer = 0 To (numbernames) - 1
strContents = objReader.ReadLine()
For i As Integer = 0 To 100 - 1
[code]....
With this code all happens ok and a new text file is created with the desired name-list with added numbers.The only problem is that the last name doesn't get a number added from 0 till 99 but for example 0 till 17.
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Apr 29, 2009
I've made a program where a picture of a bee buzzes around the form in random movements (using random number generator code) and have put it in a while loop so that whilst the bee is visible on the form (hasn't flown off the sides) it moves randomly:
While (picBee.Top > 0 And picBee.Top < 725) And (picBee.Left > 0 And Timer1.Enabled = True)
Application.DoEvents()
For i = 1 To 3000000
Next
picBee.Top = picBee.Top - 2 + 4 * Rnd()
picBee.Left = picBee.Left - 2 + 4 * Rnd()
End While
So far the bee does stop moving when it meets one of the four edges of the form but I need to code it so when the be reaches the edges and stops a message box appears declaring the game over.
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Feb 15, 2012
I have a parent panel with child panels that contain images. I am looping through the panels to save the images in the order the panels appear in the parent panel. [code] I can also re-arrange the panels via mouse. The problem is that when they are rearranged, they do not retain their order when saved.. They simply are saved in the order they were added to the parent panel.So my question is, does the for loop use the index set when adding the panel? If so, how can I manipulate the index in runtime while arranging the panels via mouse.
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May 8, 2012
i have an SQL statement which i need to code in vb:
create
table r2 (salesno
bigint, prodno1
[Code]....
Note that in this "2nd loop"
- the table name is now r3 from r2 in the first SQL statement
- there are now prodno1, prodno2 and prodno3 instead of just prodno1 and prodno2
- in the WHERE clause, the p.prodNo becomes p.prodNo2
and so on and so forth.. so for the 3rd loop
- there's going to be r4
- there's going to be prodno4
- in the WHERE clause i will use p.prodNo3
what should i do? is there an array or something that i can use here?
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Jan 30, 2011
I have this fully working with a massive wall of code and validations, but I want to dynamically add new datatables to shorten my code massively.I am pulling out rows from a database for quotations which are separated into batches. So each batch bring out its quotations and a photo. As I said, I have this working find, but I am not happy with the code.
For Each arow As DataRow In dt.Rows
Dim counter As Integer = 0
While counter < batchmax
[code].....
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Sep 3, 2011
Im attempting to loop through the rows in my Access database, and then of course add the results to my listview. Here is what I have tried so far
Dim con As New OleDb.OleDbConnection
Dim dbProvider As String
Dim ds As New DataSet
[code]......
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Mar 7, 2011
I am trying to understand the do until loop when adding numbers along with a variable to a new line in a textbox, incrementing each time. My current example is very simple but only returns the first value. I require the output to be incremented automatically, so I thought a do until loop would be best.
[Code]...
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Feb 23, 2010
I have a for loop which goes like this -
for i = 0 as integer to 100
result &= "Name" & sqldr("name")
result &= "Lastname" & sqldr("lastname")
result &= "dob" & sqldr("dob")
next
The sqldr is the sql datareader (not important here)
I want my end result to be
Name1 = Sam
Lastname1 = Davis
dob1 = 01/01/1966
Name2 =
...
Name3 =
And so on depending on how manyrecords are in database. How do I make this happen in this for loop?
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May 22, 2010
I am using a For Each Next type loop to read a records from a datatable and add records to a second table.Under certain circumstances, I add one or more records to the first table that I want to process.The problem is that the added record is not in the original datatable.The For Each...Next loop goes dutifully until the datatable records are processed, but the added record(s) do no get processed.How can I "refresh" the datatable and process the added records? [code]
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Oct 25, 2009
I need to change it so that this contains a loop to calculate the earnings.
vb.net
Private Sub btnCompute_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnCompute.Click
'Compute total earnings at retirement.
'get 5% raise per year, retire at age 65.
Dim name As String, age As Integer, salary As Double
[Code] .....
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Jun 21, 2011
I recently downloaded VB 2010 Express so i am quite new to the language, but i have worked with dark basic, which seems to b very similar.Anyway, my problem is that i cannot seem to correctly set out my array of a custom type/class. i am trying to create two arrays, one of available entities and another of selected entities of which the user selects the entities to be dealt with in irrelevant ways. i have creates a button (called test) which adds some entities to the available list and all the entities come back the same value but they shouldnt be as you'll c in the code. i have run the step into command a found that "available.item(#).Name = " will change all of the entity's names.As of current i am working with lists as the array kept asking for a 'new' statement but i couldnt figure out where to put it.[code]
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Jul 12, 2009
How do you add an arbitrary number of controls to a form at run time? With indexed controls I could define the 'seed' control at design time and reference 'clones' of the 'seed' control at run time via the index. Now I must declare each additional instance of the control at run time then set each individual property that differs from the default for that control for each instance. Then I must add the newly declared control to the appropriate container controls collection. I'd like to do this in a loop but how can I get away from using a fixed control name in the declaration:
Dim controlname As New Control
I can't use a string that I can manipulate the contents of for controlname because it sees it as a double declaration. I can't use an array such as Control(index) for controlname. Dim Control(maxindex) As New Control doesn't work. Dim Control(maxindex) As Control works but any assignment based on this such as Control(indexvalue).Name = "ControlName" fails. It didn't address the issue of handling the declaration of new controls in a loop with some kind of variable name for the control.
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May 5, 2009
I have a class project that I have been working on for a while, and I can't figure out how to add each cost from lstCosts together to show a total cost of the selected workshops in lblTotalCost. Using the current loop that I have, it only adds the last cost in lstCosts. Is there a way to add the indexes together?
Code:
Public Class Form1
' The registration fee for each workshop
Const intSTRESS As Integer = 595 ' handling stress
Const intMANAGEMENT As Integer = 695 ' time management
Const intSKILLS As Integer = 995 ' supervision skills
[Code] .....
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Jun 1, 2011
if I have the following vb code,
for i = 0 to dTable.Rows(i).Count -1
Dim sql As String = ""
Dim strConn As String = ConnString
[Code]....
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Jun 19, 2011
I have an array of people stored in a custom structure array... how can i copy this array to a temp array so that the temp array has all the same values as the original custom array?
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May 4, 2012
I'm adding labels at runtime to my form with a tag. Let's say I have 3 labels with the tags, "1", "2" and "3". I'm adding the tags by counting the labels + 1. When I remove a label with tag "2" from the form there are only 2 left. When I add a new label it will add a new tag "3", but that one already exist. So my "solution" isn't a very good one Although tag "2" is free, I want to give it "4". Any thoughts on how to code this properly?
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Mar 15, 2012
i want to see if i can get my hands on a working example of a 2d array something along the lines of continents and 5 sample countries from each continent.i would also like to know how to loop through a 2d array - i know i need a loop inside a loop but cant find any examples.i know to declare a 2d array its like: dim arrayName(,) = {{"sample","sample"}{"sample2","sample2"}}
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Feb 26, 2011
I am designing a prisoner system
On the design i have different text boxes that display the prisoner name, birth date, number etc.
I then set all of the the different prisoners up in an array.
I want to know how to loop though this array so that when i start the program up it will start at the beginning of the array with the first prisoners details and then when i click "Next" the next prisoners details will be displayed in all of the boxes.
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Apr 29, 2012
I am trying to display payment details for each loan, but I am having problems displaying on the form.
Public Class MortgageDetailsCalculatorForm
Private Sub CalculateButton_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles CalculateButton.Click
[Code]......
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Nov 3, 2011
I had insert value from datagridview to array
but how to make the array become for loop function?
Dim rowNo As Integer = 0
counter = dgv.RowCount()
[code].....
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Oct 14, 2011
I'm writing a loop to go through the first array of a 2D loop, and I currently have it like this:
For Each Dir_path In MasterIndex(, 0)
'do some stuff here
Next
But it's giving me an error, saying it expects an expression in the first field. But that's what I'm trying to do, loop through the first field. How do I fix this? What would I put in there?
EDIT: to clarify, I'm specifically looking for the 0th element in the subarray of each array, that's why that second field is constantly 0.
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Feb 13, 2012
I define a arrary.
Dim myStr(100) as string.
Then the length of this array is still 0. Then is risky to cross the bound. So how to intialize this array without using a loop?
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Mar 10, 2009
I've been looking far and wide to find the answer to my question. Its probably has a simple answer, but I am new to VB2008 and can't figure it out. I have a web form setup 30 textboxes, and am trying to find a way to quickly add them to an array through a loop.Their ID's are all - TextBox1,TextBox2 ect. I have this loop here that runs with no errors, but nothing shows up in the TextBox's on the web form.If the TextBoxes are already on the form, do I still need to declare new boxes when trying to add them to the array? [code]...
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