Get Values From A IList(Of T) And Output To A Listbox'Dim J As Integer?
May 28, 2012
i am having trouble displaying the values i get from an IList(Of T) and displaying that in a listbox found on another form. I have used a for loop to get the values from the IList, then i can display that in a msgbox. for eg:
Dim j As Integer
Dim path As String = ""
For j = 0 To best_tour.Count - 1
[code]....
best_tour is ot type IList() path keeps the name found in the list everything works fine inside the loop..but it does not populate the lst_output listbox.I have tried using files, but in vain. It just get the values from the list but does not display that on the listbox.If that can help, then listbox is found in a panel on the form2, but taking it out of the panel does not affect anything.
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Mar 22, 2011
I am working with a future value application and I am trying to display the calculated future values in a listbox. For instance, I input the monthly investment, the yearly interest rate and the number of years into textboxes and I want the application to list out the future value for each year until the number of years in which I entered is reached. I cannot figure out how to get the code to display the value after each year. I am trying to use the "mod" operator to display the value each time the 12th month comes around.[code]...
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Aug 2, 2011
I'm trying to use a variable that is simply a list of a list of strings.I've declared it as follows:
Dim iRows As New List(Of List(Of String))
Then I'm trying to pass it as a parameter to another method and I've defined the method as follows:
Public Sub Import(ByVal Rows As IList(Of IList(Of String)))
For Each Row As IList(Of String) In Rows
ImportRow(Row)[code]....
Unfortunately, when I try to run that code I get the following error where it tries to pass my variable to my method.
System.InvalidCastException was unhandled by user code
Message="Unable to cast object of type 'System.Collections.Generic.List1[System.Collections.Generic.List1[System.String]]' to type 'System.Collections.Generic.IList1[System.Collections.Generic.IList1[System.String]]'."
When I change the method definition to use the types rather than the interfaces as follows, it works.
Public Sub Import(ByVal Rows As List(Of List(Of String)))
For Each Row As IList(Of String) In Rows
ImportRow(Row)[code]....
So, is it not possible to use generics with interfaces in this way? It works fine as long as I'm not nesting them.
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Apr 5, 2009
I'm trying to set an Integer value from my.settings.The values comes frpm a listbox, and then inserted to settings (set to specialized.StringCollection)The problem is when i'm trying to get the values and apply them to my function.Error code: Conversion from string "65 & 71" to type 'Integer' is not valid.To me it looks right, but maybe i'm missing something.
Code: Dim test2 As Integer Dim test As System.Windows.Forms.Keysm trigglist As New StringBuilderor Each item As String In
[code].....
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Jun 16, 2010
Input a range of numbers and sort them into 6 equal amounts and then having the program tell you which amount the number was put into?
I.e
Input:
1200, 2400, 600, 600, 300, 300, 1200, 1200
Sorted into:
Group A: 2400 = 2400
Group B: 1200 + 1200 = 2400
Group C: 600 + 600 + 300 + 300 + 1200 = 2400
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Aug 30, 2009
how I could go about doing it. The console application needs to input a positive integer and output its proper divisors.
[Code]...
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Sep 22, 2011
In the following code I have two class scoped variables intCompanyID and intEmployeeID. When I set them to a value in btnFetch_Click then try to read them later in btnSubmit_Click they are set to zero.
Option Explicit On
Imports MySql.Data.MySqlClient
Imports System.Data
[code]....
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Jan 2, 2009
cast integer values to an array of enum values?
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Feb 11, 2011
I have a textbox that is filled by the method [code]...
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Aug 30, 2009
The console application needs to input a positive integer and output its proper divisors.[code]
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Nov 8, 2010
My button is [code]I want the results that are in cmd to be listed into a list box in vb is that possible ?
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Oct 7, 2011
I am using VS 2010 to make a web site and working on a page right now. After submitting my variables, I need to output the values as a pdf
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Jan 23, 2010
use values to output and save as pdf
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Mar 11, 2009
Trying to get the user to put 3 numbers in 3 text boxes and get the average.Private Sub btnAverage_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnAverage.Click
Dim a As Integer = CInt(txtone.Text)
Dim b As Integer = CInt(txtTwo.Text)
Dim c As Integer = CInt(txtThree.Text)
[code].....
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Jun 7, 2011
my listbox contents output as 1 whole row like:Total Normal = 3 Total High = 5 Total Low = 6When i want the output to be formatted like:
Total Normal = 3
Total High = 5
Total Low = 6
[code].....
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Aug 18, 2010
"For tax purposes an item may be depreciated over a period of several years. Write a program that request a description of an item, year purchased, cost of the item, the number of years to be depreciated (estimated life) and the method of depreciation (combo box), compute and display a depreciation schedule for the item similar to the schedule below. NOTE: FOR NEXT for Straight line method, DO WHILE LOOP for sum of years, DO LOOP UNTIL display table of depreciation."i don't know it this is correct 'cos when i run it, it doesn't show anything. when i clicked compute
Public Class prjactivity6
Dim intyearp%, intlife%, intmethod%, intstraightyear%
Dim dblcost#, dblstraight#
[code].....
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Jan 13, 2011
I'm working on a simple BlackJack (player vs dealer) system, that I plan on making gradually more advanced. However, while everything works brilliant, I'm yet to find a logical solution to declaring an Ace as both 1 and 11.So my question is, how do I pull this off. Below is the "New Game" logic (code) so it should give you an idea of what I'm working with (note how player scores are added together, I'm sure it's easy enough to understand...).I'd like lblPlayersum to still be a usable integer, though I'll rework everything if noone has a logical solution.Just quickly note that the "Cards" array is purely used to coordinate images."CardsVal" coordinates that values within the deck. Arrays 48, 49, 50 and 51 are the aces. (Currently defaulted to 11).[code]
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Mar 12, 2011
I have a question, that is: What is the easiest way to get Integer values from a file.The file is structured like this: (Without the text)10...How many values are in the file 1 2 3 4 5 6 7 8 9 10..The values...I know how to do it, the hard way, but I need an easier way, to teach a friend the basics of Vb.net.
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Sep 30, 2009
What code can I use to make an integer appear in a listbox? If any of the above are posted, you shall burn in purgatory. Don't worry, as forums are not considered cheating.
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Jan 31, 2010
how to plot a graph using the out put values in textbox[code].....
this is my code but it doesnt seem to accept the output. It works everytime I enter number only.
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Jan 16, 2009
I've been making a scheduling program using the calendar object.I can manage to select any date with a single click with a message box pop up entering a memo for the date selected. After pressing ok, the memo is displayed in a list box, with date.
1.Unfortunately the date is being displayed twice - perhaps because i used .selectedrange in the handler ? i would like it to be listed only once
2. the memo comes up on a separate line, ideally id like it to be displayed on the same line as the date.i tried ListBox1.Items.Add(whendate, memo) but it cant compile, so ive had to put each line in seperately
3. I would like to mark the sundays and national holidays in red color (the calendar is only set for a year so i dont mind doing them by hand, however the only tool i can find in the Monthcalendar1 properties is MonthlyBoldedDates, and no color assignment [code]
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Oct 21, 2011
I am extremely new to programming and have been asked to create a simple point of sale receipt application using VB.NET. Here are my tasks. > the application adds items to a sales receipt one at a time using an input text box and an Add to Receipt button(done)each time the Add to Receipt button is pressed, the new item price is added to a list box control which acts as the receipt and the input text box is cleared for the next entry(done)> the application should also contain output labels for subtotal, sales tax (13%), and total that should be updated whenever an item is added to the receipt(not done)> the program should use a constant for the sales tax(done)> the application should be formatted with dollar symbols and two decimal places (for cents)(done)> the application also includes a clear button which when pressed clears everything and allows the user to start a brand new sales receipt.(done)> the application also includes an Exit button that will shut down the application when clicked
[Code]...
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Apr 28, 2009
I've start on another program and I'm confused whether to use a listbox or listview to display output. I have 2 books but neither mention the use of Listviews and they don't cover using Listboxes for displaying output, and will be used in combination with combo boxes as this is how the user will enter the information. I know I want to use a global variable to total scores if this makes any difference at all.
[Code]...
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Jul 26, 2010
I want get integer quotient when I divide two values. Per example
X=3
Y=2
Q=X/Y = 1.5 // I want get 1 from results
X=7
Y=2
Q=X/Y=3.5 //I want get only 3 from results
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May 1, 2012
My problem is that I have two forms, Form1 and Form2 ...on Form1 there is a TextBox called txtTotal (this contains the calculation of Ticket Prices, thus it's a numeric value) and on Form2 there is a TextBox called txtTotal2. All I want to do is get the same number that appears in txtTotal on Form1 to appear in txtTotal2 on Form2 .However whenever I try some of the help tips online such as using a declaring txtTotal as global or friend it dosn't work, and any other code iv tried attempts pass the textbox value as String which brings an error.
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Oct 17, 2011
It's good to be back in this forum again hoping someone could help me solve my problem again xD My goal is to import .txt to db.
This is my code
[code]...
Some of the records are inserted but when the code read the part where there is an empty/null value in the column where they are assigned as "decimal" the error message "Error converting data type nvarchar to numeric." pops out.
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Jun 23, 2009
I am trying to reset all integer values to "0" with a reset button.I try not to use hardcoding by simply set them one by one. So my idea was checking all the variable's type and set them all to "0".
I tried to use this methode, from someone in this forum (sorry, I forgot the name but this is very helpful...) For Each ctrl As Control In Me.GroupBox4.Controls 'Check and see if this control is a TextBox
If Object.ReferenceEquals(ctrl.GetType(), GetType(Label)) Then 'Check and make sure this s the "TextBoxToExclude"
'CType(ctrl, CheckBox).Checked = False
CType(ctrl, Label).BackColor = InactiveColor
End If
Next
But when I tried to find the code, I couldn't get it.So, if anyone knows how to do this,
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Oct 21, 2009
I wrote this code and everything works as planned:
Module SalesCommissionProgram
Sub Main()
Dim name As String = 0
Dim code As String = 0
Dim monthlySales, commissionDollars As Double
' Prompt user to input value for name
[Code] .....
For the finished project I am supposed to have it output the total sales and commissions for that were calculated before the sentinel value (Eugene) was entered. Here is what I tried and here is where I am lost.
Module SalesCommissionProgram
Sub Main()
Dim name As String = 0
Dim code As String = 0
Dim monthlySales, commissionDollars As Double
[Code] .....
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Jun 6, 2011
I have to create an application that will display all the odd and even numbers between the input values of number 1 and number 2. Display the output in a lstOdd and lstEven listbox.
[Code]...
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Jan 29, 2009
I'd like to ask assistance for the following scenarios below:
1. I want to check whether certain applications are already running or not.
2. The applications i need to check are the ff:
a. MS Word
b. MS Excel
c. Notepad
d. MS Project
e. MS Powerpoint
3. If any of these are running, the window title of that application will be filled-in in a listbox.
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