Want To Avoid A Number In List
Apr 21, 2011[code] I am getting a run time error for this code. How can I change it. and how to limit the loop to print number from 1 to 42 and not 5 in the list ?
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Avoid Runtime Error When Writing A Number Into A Stringed Textbox?
Oct 16, 2010I am trying to make a program in Visual Basic 2008 Express edition which have a textbox where the user can write information to search for in a simple database stored in the program-code.
What I would like is that when the user types a word, a string variable connected to that textbox.text will be treated as a string. BUT if the user types a number in the textbox, the textbox.text will be treated as an integer (for example a "Double")
Avoid Editing In Display Instead Of Selecting From Dropdown List?
Mar 7, 2010I made a little program what worked perfectly, till some started writing his input in the display of the comboBox istead of selecting it.
View 1 RepliesOptimal Use Of Realtime Application List(of T) Avoid Internal Redim Of When One Extra Element Is Added Or Removed?
May 30, 2012I am working on a realtime application where the data is addded to a List(of T) all the time. MB per minute
Elements older than X minutes shall be removed from the beginning of the list to free memory.
As far as i can understand will there be an internal (slow) redim when i add each element after i have reach the number defined with the Capasity metod. (I set that quite big from the start, but the data speed is unpredictable so it can be exceed)
What happens each time i remove and element from the beginning of the list , seems like it takes a lot of time, ? new redim ?
What is the most CPU fficient way of removing 1 or many elements from the beginning of such a list?
Avoid "number Stored As Text" Errors?
Feb 11, 2011I've written some code in VB.NET that exports data to Excel. The data is mostly numbers but text can occur as well. So I send it as String values to Excel. I get the error "Number stored as text".I checked the format of the cells that show the error and it is General and not Text.
how to avoid this error or prevent Excel from showing this error.
Add A Number List In Program?
Sep 29, 2010Private Sub cmdReport_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles cmdReport.Click[code]...
View 2 RepliesRemoved Number From List Or Not?
Feb 22, 2012Here is the code I have amended after getting the answer from previous thread (Spinning Numbers)
I'm not sure if I am removing the random number from the list or not as the number shown in the Label(currentnumber) does not match the one showing in Label1, which is the one I'm using to check which number has been removed.
Private Sub Tmr_Tick(ByVal sender As Object, ByVal e As System.EventArgs) Handles Tmr.Tick
'Show spinning numbers for decoration
[Code].....
Do While Loop - Remove The Last Number In A List?
Sep 29, 2010learning about loops (still a beginner) in VB.net. I have got the below code and basically it is meant to stop the loop once it reaches a number above 20. Now, the problem is that it does stop after number 20 but the last number that is displayed in the list is always above 20..... how I can stop it showing the last number as above 20?
[Code]...
Forms :: Find Number In List?
Apr 14, 2009how to use ListName.Find. I am trying to find a number in an a list of integers.
View 1 RepliesGetting Random Number From List Of Numbers
May 20, 2012getting random number from list of numbers is getting me sick. i am trying to do it for like 20 days now but every time i do it ends up in a loop wich crashes the my.settings system. does anyone have an idea how to get a random number from a list. then delete that number so it cannot be called again. my system must mark some items with numbers but non ofthe numbers may be used more then 1 time the max items in my system is 90. so from 1 to 90 without getting 2 times the same number heres the code i tryd
[Code]...
Limiting The Number Of Items In A List Box?
May 19, 2011Does anyone know how to add a limit to the number of items in a list box? For example, you can't add more than 10 items in ListBox1.
View 2 RepliesList The Number Of Checkboxes Checked?
Sep 28, 2011I wanted to see if I could have a list of six check boxes with names of a certain author that people have or have not read. When they are asked to check all that apply to them and then hit submit I want a label to display a message depending on the number of checks they made. So if they have 2 checks marked off then a message could say, "You do not read much of this authors books?" or 5 could say " You like this author, don't you?".
View 5 Replies[2008] Number Results In A List Box?
Feb 26, 2009I want to list the results in my list box in a numbering format, something like this:
1: Result #1
2: Result #2
3: Result #3
How do you create this type of format in a list box.
.net - Implement A List(Of) With A Maximum Number Of Items?
Nov 14, 2011I'm trying to figure out a good way of implementing a List(Of) that holds a maximum number of records.
I have a List(Of Int32) - it's being populated every 2 seconds with a new Int32 item.
I want to store only the most current 2000 items.How can I make the list hold a maximum of 2000 items, then when the 2001'th item is attempted to be added, the List drops the 2000'th item (resulting in the current total being 1999).
Thing is, I need to make sure I'm dropping only the oldest item and adding a new item into the List.
.net - Project Euler 76 - List All Partitions For A Given Number?
Aug 16, 2011Here is how Project Euler Problem #76 sounds like:"How many different ways can one hundred be written as a sum of at least two positive integers?"I've struggled to get it right for a couple of days, tried to solve in different ways and got mostly the same results for small numbers (those that are easy to check). I ended up with an algorithm that lists all partitions for a given number in alphabetical order, descending (starting from "N-1 + 1"). Written in VB.NET:
Dim ub As Integer = 6
Dim wayCount As Integer = 0
For n = ub - 1 To 1 Step -1
[code]....
I've studied these links:
(ProjectEuler) Sum Combinations - provides a mathematical solution, which does not list all combinations
Generating the partitions of a number - is in python, which I cannot read/run/understand.
Adding A Random Number Within A Range To A List?
Jun 2, 2011EDIT: I am so sorry! I have added my thread to the C# discussion thread instinctively wherein in fact I have been creating my application in VB.NET so sorry! Please transfer my thread to the appropriate location! I am currently trying to mess around with a simple mp3 player and am in the process of creating a shuffle list from all the songs in my playlist.
View 2 RepliesCan't Get Number From List Box To Display In Reverse In Text Box
Mar 10, 2012Build a small application that fills a collection (list) with 10 sequential numbers, and then prints the collection(list) in reverse order, skipping every other member, until the entire collection has been displayed. For example, if the collection contained the numbers 1 through 10, they would print as:
10, 8, 6, 4, 2, 9, 7, 5, 3, 1 The print out should be in that order no matter what sequential numbers are in the collection (list). If it were 21 through 30, output would be 30,28,26,24,22,29,27,25,23,21 and so forth.
Note: you must use a collection - do not write down the numbers directly to produce the output. Loops should be employed but the loop control variable should be used as an index or subscript number. Your code should work even if I change the list of sequential numbers to something else. Remember that indexes count from 0 first -- the first item in a collection has index 0, the second item in a collection has index 1, and so forth.
I've got the first part of the problem, getting the numbers in the list box, done with no problem. It's the second part I am struggling with. I cannot get the numbers (I am using 1-10) from the list box to display in reverse order in an adjacent text box.[code]...
Created A List Box And A Combo Box With A Number Of Different Currencies?
Apr 19, 2009I'm very new to programming with Visual Studio(just a few weeks). I've read through a beginner's book and I've started to write my first little programs to get used to coding and to improve my skills. One of the first programs I had created was a simple currency converter. I've created a list box and a combo box with a number of different currencies in them and I want to know if there is an easy way to attach a value to each of these selections. For example, if someone selects British Pound in the list box and Indian Rupee in the combo box, I want to be able to have the British Pound be worth 1.67(versus the dollar) and the Rupee to be 25.00(versus the dollar) for example so that I can create a simple function that will change pounds to dollars and then to Rupees so that I can do this calculation with a multitude of currencies. If you have some idea of how I can attack this problem,
View 2 RepliesPrime Number Output With List In Textbox
Dec 11, 2009I am not getting an output with a list, I can only get the last number of the statement in a text box.
Dim lowerLimit, upperLimit, primeNumber As Integer
Dim isPrime As Boolean = False
lowerLimit = CType(TextBox1.Text, Integer)
upperLimit = CType(TextBox2.Text, Integer)
While lowerLimit < upperLimit
[Code] .....
Sorting Number Numerically In List View?
Dec 18, 2010In 2007 I created a program that reads weather data into a listview. When a user clicks on the column header it fires off the column click event handler which calls the Sort Wrapper function. The Sort wrapper will re-order items either in ascending or descending order.
I have never been able to get negative integers to sort properly. I have created a stripped down listview program with a few numbers in the grid for testing. (see attached program zip file).When you run the program, click on the column header that says "Val" and you will see right away that the numbers do not sort correctly.
Dynamically Generate Checkbox List For Number Of Rows In Asp .net Using?
Aug 19, 2009I would like to generate the checkbox list dynamically.For example against the list of employees(rowwise), provide the list of check box options (columnwise), the selected items will be stored in the database against the each employee. Since i am the new to .NET your guidance will help me to complete the task.
View 1 RepliesFind The Smallest Number From A Text File List?
Aug 13, 2009The program is about a text file that contains the sizes of eggs. They task is to put each egg size into a category e.g. small, large, xLarge etc. Also i need to record the highest and lowest weighted egg.
I have don everything except find the lowest weight. Not matter what i try, i cannot seem to keep hold of the lowest sized egg.
here is my code :
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Dim egg, jE, exE, lE, medE, sE, tE, high, low As Double
[Code]....
Unable To Insert A Number In To A List Box In The Correct Order?
Jul 8, 2009Ok here goes my stab in the dark again: I would like to be able to insert a number in to a list box in the correct order, at the moment the number gets put at the end, but the list box starts negative and then gets larger and the values that will be added are within the range already there, My guess would be some sort of sort function?
listbox1.items.add"inorder"(textbox1.text)orlistbox1.items.sort.add(textbox1.text)
i have seen addrange as a function. can you also tell me if i am starting to think like a VB ((novice) programmer?
VS 2010 Program To Check The Number Of Items In A List Box?
Jul 6, 2010I want the program to check the number of items in a list box, then send use that number to form a FOR loop and send each to the serial port individually. It actually sends everything, but the program always crashes after the last one saying that the sdprintcount variable is an invalid number for the index. I don't get it as this happens no matter how many items are in the list, and it always crashes on the last one. It sends it, but then it says the index number is invalid.
*********************************
Dim sdmods As Integer
Dim sdmodsp As String
sdmods = sandwichmodlist.Items.Count
[code]....
VS 2008 - Finding Highest / Smallest Number From List Of Values
May 10, 2011Create a program where the user can find the highest number and the smallest number from a list of values It needs to operate as follows: Enter a value (number) in the TextBox and click on a button [Add to list]. Once this is done, the program analyzes if the number is the highest entered or the smallest. To view which is the smallest and largest, a second button [highest and lowest] will populate fields (texboxes) with highest and lowest numbers. I've attached an image of what the program should look like.
View 4 RepliesCreate A List Box Of 25 Randomly Generated 0s Or 1s - When Put The Loop In, It Only Repeats The Same Random Number?
Mar 25, 2012Beginning VB 2010, had a project that requires us to create a list box of 25 randomly generated 0s or 1s. Problem is when I put the loop in, it only repeats the same random number, not different one each loop. What am I doing wrong?This is the code I have so far...Code in Question:
'Declare new random object
Dim RandomGenerator As New Random
intRandomNumber = RandomGenerator.Next(0, 2)[code]......
Forms :: Add A List To A Combo Box From A Txt Or Excel File When Entering An Account Number?
Feb 20, 2010How can we add a list to a combo box from a txt or excel file when entering an account number. the details must only be displayed for each defferent acount information. for example. account no 3332 must show a name and telephone number in to separate comboboxes. although it must contain lets say 4 telephone numbers and 4 names that are located in a text document.
View 2 RepliesUser Selects Number Of Products From Datagrid / Adds Them To A Basket Using Array List
Jun 8, 2012I am making a minor basket system which the user selects a number of products from a datagrid and it adds them to a basket using an array list (arrItemID).However on the ViewBasket form I want another datagrid however a query is formed listing the selected products. Though the datagrid seems to be empty (though the query when outputted to a text box is ideal. [code]
View 3 RepliesWrite A Program That Displays A List Of Super Bowl Winners Ordered By The Number Of Games Won?
Mar 28, 2011So Im a student and I need some help I have a question "Write a program that displays a list of Super Bowl winners ordered by the number of games won." I need to use arrays, in the most basic way possible someone was telling me about keys but I havent done that yet...The array is a text file with just the 44 names of the Superbowl Winners...
View 12 RepliesForms :: Use A If Statement To See If Fosters Button And Number 1 On The Number Pad Are Both Pressed Then Multiply Constant By Quantity Number?
Mar 4, 2011I am doing a bar cash register and I want to use a if statement to see if fosters button and number 1 on the number pad are both pressed then multiply constant by quantity number
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