The app I'm creating is about ordering pizza, this is a screen shot of the form.At the moment, I have only set up customer 1, when i enter in all the information and click total at the bottom it is supposed to then display all of this information in the listbox at the bottom. But when I click total nothing happens I have looked at this over and over and can not understand why. Here is the code that I am using.
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What is required to use SQL CE in a program? Does some version of SQL Server need to be installed?
View 2 RepliesI have a class set up to hold values on a registration form (VB.NET, MVC), and among the properties is a Password property:
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I am writing a program which includes access to a Microsoft Accsess database. It is running fine on my work computer (windows xp) but when I transfer it to my laptop (windows 7) to work from home it stops running on the "open" statement. I have stripped out all other code so that I just have a program with this in:
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Again this will run fine on my desk computer but will not get past the open statement on my laptop.Interestingly, if I start a brand new project on my laptop and paste this code into it - it runs correctly.
I have two text files, first text file looks as follows
File1
String1 String
String2 String
String5 String
String8 String
These fields match some of the fields in my File2, but here there is an extra column which shows a numeric field for that row.
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I am trying to create a program to track how much money you earn until you have the amount you have been saving for.
View 2 Repliesim building an application i started it in VB 2008 and i upgraded to VB 2010
then i made some mods and tryed to run the application and then
i get this error
Error2Reference required to assembly 'System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089' containing the type 'System.Windows.Forms.Form'. Add one to your project.C:UsersAdminDesktop
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I have used ADOX for create some fields in my database in access but the required property of this appended fields (columns) are set in "yes" but I want to be them "No" who knows how can I solve this problem
View 3 RepliesI'm using the following code
' Visual Basic
Private Sub Button1_Click(ByVal sender As System.Object, _
ByVal e As System.EventArgs) Handles Button1.Click
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Its straight off the Microsoft site found here: [URL]
When I add the required components and click on the button, my app simply disappears, closes, goes right back into a stopped state. No errors, No Warnings, No issues. Nothing. Its as-if there is a stray "END" just before the IF statement. (But there isn't) Its stopping right at the IF statement. My app (THEIR CODE) just makes it disappear and "Stop". The code was working about an hour ago, but now nothing, and thats the only code on the project.
how would you clear a listbox, like with a button.
View 3 RepliesI have this code which lets you choose a class, then enter 3 names into the roster listbox...the problem im having is with the btn grades...im using a nested loop but cant figure out how to get all 3 names into 3 seperate inputbox prompts to input the grades...right now its only showing the first name entered...how do you get the code to loop and go through whatever amount of students entered in the roster listbox into the grade listbox.
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Every time I compile my application, during install I get the error:Cannot download application, the application is missing required files
View 3 Repliescan i know what .net framework is required for my application that has been developed under Microsoft Visual Basic 2010 Express.
View 1 RepliesDoes vb 2010 have a 'REQUIRED" property or control that allow you to make a textbox a "required" field? I googled and saw something about required property in controls in toolbox but somehow I could not find it anywhere in my vb 2010 toolbox. Would it be easier to write it? Does anyone have sample code?
View 6 RepliesI'm using the following piece of
mports System.Data.OleDb
Public Class Login
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As
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On the da.Fill(ds) line i'm getting the "No value given for one or more required parameters." I've pulling my hair for hours because I've similar working pieces of code on other applications.
If I set a ListBox.Height = ListBox.PreferredHeight when the control is hidden and IntegralHeight = True, then set it visible:
a) Actual Height reduces by typically 3-5 pixels after redraw (but not 1 pixel per item).
b) PreferredHeight does not not appear to give the correct integral of item heights.
Is there a way to make ListBox calculate the correct integral Height before the ListBox is made visible, so it can be correctly pre-positioned from bottom edge?
Private Sub Form1_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
ListBox1.Visible = False
ListBox1.IntegralHeight = True
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This code bellow to compile a single listBox on form1 to listBox on form2 then listBox on form3.
I want to modified this code to compile 169 of ListBoxs on form1 to 169 listboxs on form2
and 169 listBoxs on form3.Try this code,not need the new coding.
Original code from JoOl and modified by John Anthony oliver
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1 when my listbox returns resaults it only brings back 10 how do I set it to return lets say 500
and question 2 is when I click on my links in listbox it's not opening webpage as I would expect it...
This is my code
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I'm trying to implement a way for users to specify which files they want to backup by typing in file extension into a listbox.But I'm a but iffy on how exactly to do this.
This is what I have so far:
Dim n as integer Dim extensions(n) as string for each fe as string in listbox1.items
Here I want to add *.txt or *.docx from the listbox as a string in the array above whilst incrementing n by 1 for each new string next How exactly do I do this?
I have 2 Access databases;
Db 1 & Db 2, On the form is a list box which is data bound to DB1 'MainName', and a bunch of textboxs which populate from the record selected from db1 in the listbox.
In DB1 the 1st column is called 'MainName' and in DB2 the 1st column is also called 'MainName'
Now what im looking at is when the item in the listbox is changed, the record in the second database which has the same String in the 'MainName' column is also selected.
The route to take that i can see is having both databases added to the project , and have the listbox apply a filter on database 2 based on the selected item.
(im using 2 separate databases as when my project updates the DB1 also updates, but DB2 contains the users own strings so i don't want that to update as it would lose all there saved strings.I dont know much about lookup tables etc but they must all be in the same database right? so that rules them out, due to the update issue.)
I have the code which gets HTML code and puts it in a richtextbox with seperate lines.I would like the richtextbox to delete each line which doesnt contain a url in it.
View 3 RepliesI have this form and I want when any of the RadioButtons is checked, then some items appear in the list.
in the group box1 : I used this code Private Sub RadioButton1_CheckedChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles RadioButton1.CheckedChanged, RadioButton2.CheckedChanged
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Each time when a user clicks on an item in the listbox (items are integers only), this item should be added in an array . Array should be sorted at each click from smallest to largest values and must be shown somehow .
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How to compare two listbox? I have two listbox one has a list of names and the other has a list of names too but I need compare the listbox1 with the listbox2 for delete from listbox2 all items existing in the listbox1 for example:
HTML
listbox1 Listbox2 Listbox2 after press a button
joel joel John
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I have a custom control type that inherits from ListBox. It is a list box where you can assign a ContextMenuStrip to each individual item, stored in a Dictionary object. To do this I also had to create a helper class that inherits from ObjectCollection to make sure the owning ListBox gets notified whenever an item is added or removed from the collection, so the corresponding entry in the dictionary can be removed.Now I have a problem that baffles me: Whenever I right click an entry in my EnhancedListBox, I get the following error on the line that has been marked red in the "InvalidArgument=Value of '1' is not valid for 'SelectedIndex'."(Of course, the value can be 0 or 2 as well, depending on which item in the list I click.)
I have checked, and there are 3 objects in the collection, in fact the current value of SelectedIndex was 1. The quotes are also misleading, the value I am trying to assign if of type integer, as is the current value of SelectedIndex.
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Ok i am on my webbrowsers favourites, and im looking to use a listbox so the user can have as many as they want. Also i want the listbox to show the Site Title, like so it just shows the title of that website. But then i wouldn't know how to navigate to that website if just the title is in the listbox How would i do this?
View 6 RepliesI've being trying to work out a problem i've being having for a while now and i'm not sure if i'm over complicating it.When a form loads, it uses a for next loop to load an array of peoples names into a list box. However i want to extract the persons ID once their name has being clicked. I can make this work by using another for next loop until the selected name matches the an array number. However it fails if there are two people of the same name.Is there a command or piece of code that can extract the row number of the item selected?
View 3 RepliesI am the kind of person who learns as they need it and this time I cannot figure this one out :SI have a listbox with n amount of items.I am trying to add n amount of items to an array and then save the entire array to a textfile.How should I go about this? I have Google'd around and code I have adapted or straight out copy-pasted (sad I know) is throwing all kinds of errors :S
View 5 RepliesDim mess As New MessengerAPI.Messenger
Dim msncontact As imessengercontact
Dim msncontacts As imessengercontacts
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I have two listboxes and one text box. lbxData is already populated with strings (ex; car, boat, motorcycle) I have a text box (tbxRandom) for user input to choose the number of random strings they want generated and placed in the other listbox (lbxRandom) when clicking btnRandom. Here is what I have but keep getting an error. mylist.addrange(str) "value cannot be null. parameter name: collection
Dim Str As String
'Declare a List
Dim myList As New List(Of String)
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