I have this exercise which says the following: Create a form with 2 listBoxes. Add a number of items to one listBox. Create a button that when clicked removes the selected item in the first list and adds it to the second list... Also How can i create a Messagebox that will display error when nothing is selected
I wrote this code:
CODE:
Using VS 2005 for this one. Basically what I need to do is create x number of labels and textBoxes on a form.I know there is a way to do it, but like I said I've never had to so this is new and not really sure what the right name for it is (always learning right).
Do
' look for a value if so then
'create and populate the lbls and txtBoxes
[code].....
I want to create a console application that has a Windows Form inside of it that contains listboxes. I use these listboxes like a database. I want to load the listboxes with filenames and then work with those file names via the console code. I'd like to do this in a console method because I want to pass arugments to it from the command-line. The issue I am having is when I reference db.listbox1.items.add etc., the error I get is:
db is my Windows Form
main is my console code
vars is global variables I use
Error 1 Reference to a non-shared member requires an object reference. C:UsersxyzDocumentsVisual Studio 2008Projectsindexindexmain.vb 105 21 bindex
The code:
Public Sub open_first_file_for_timestamp()
Using fs As New FileStream(vars.working_first_file, FileMode.Open, FileAccess.Read)
Using fx As New StreamReader(fs)
[Code]....
I have 3 listboxes on my form. Sometimes the items I add to the listboxes are cut off within the listbox since they are too long. In the case of that, I want all the listbox sizes to expand according to the length of the text. Once the size of the listboxes expands, I want the size of the form to expand to avoid any problems. How do I do this?
View 3 Repliesthe application I'm building is ALMOST done. The ONLY final feature I NEED to add is the ability to receive email. Now I'm using VB 2010. How would I go about doing this? Would I use 2 listboxes and a form with labels on it to display the message. I haven't any code yet. How in the world do I do this??
View 2 RepliesHello I want to create a windows form application program that can create games something like Gamemaker or Klik & Play (butt less advanced) with D&D "Drag and Drop" events and actions.
View 7 RepliesI have produced an application which works with datasets but I now wish to provide the user the ability to add and admend records within the database.But i wish to do this in a seperate form.My current dataset instanciates classes onLoad.Should i try passing the Dataset to the new form class? although I have the problem where by when i pass the dataset to the form class using code below i get this problem:[code]Should i just create a create a new connection to the database and produce a new dataset for this form? or is there a better way to do this?
View 2 RepliesI am creating a programme in which the user searches a file by typing into a textbox. if the search terms match anything in the file, it will be displayed in the list box. I understand this may be unclear so i will include an example:If the user enters "Oliver" into the textbox, the programme will search the file for any records that include "Oliver".The records are stored in structures:[code]The user will then click the desired record (several may appear)how would i get the integer and perform simple addition and subtractions on it?
View 10 RepliesI have used VB (versions 2 - 6) through many years; however, I am crash-course training myself into the VB2008 / VB2010 world kicking a screaming. I would like suggestions as to what SQL database access method should I focus more on in my learning process without making me feel that I'm a million years behind. I know I have WinForms where I can create a datasourse and drag / drop fields or tables on a form to create a grid (not really what I'm looking for).
My trouble isn't so much designing the form but in how I access the database. Theres XML, LINQ to SQL, ADO.NET, and many other methods. Not only do I need to grasp these methods quickly but I also need to know what type of projects I should create. What I mean is...I was thinking that I would design a WinForm app; however, I see that there are WPF apps and others to chose from. This is getting deep. I know it depends on the project that I'm working on. My plans are to write an app based off of either an SQL Express 2008 or SQL Server 2008 database. This first app will be standalone for now but may later become multi-user. I know I'm far behind on my learning curve coming from VB6. I have read a bit on VB2005 / 2008 / 2010. I own
both VB2008 and VB2010. I use VB2008 at work. I know ADO.NET is still alive but by what I read online, it's a dying method and is only kept for backward compatibility. XML and LINQ to SQL and other methods are all pretty new to me.
i keep getting this very wierd problem were i put in audio into my forms and (Design) but when i put in a 4'th song, it stops working and comes up with a error. I havn't limited my audio to how much songs i can play but for some reason it just stops playing them. This code below is the code i use for this form
Public Class Form1
[Code]...
First my prog scan a specific path "C:music" which contain Mp3. Then it takes the MD5# of all mp3 and put it in a listbox1. Also on the formload it does open a ".txt" which also contain MD5# that goes into listbox2.Now this is what i am looking to have :When i click my button it compare each line of my listbox1 to listbox2. If , for exemple , the first line of listbox1 is already in the listbox2 then it delete the first line of listbox1 (listbox1.items.removeat(0)). And Do until listbox1.items.count = "0".
View 2 Repliesi am generating a listbox from a txt file this list box has ip's in and what im trying to do is run a for each statement
for each item in listbox.items
me.query()
next
this is what the query() is
Try
Dim UdpClient As New UdpClient()
UdpClient.Connect("my ip in here", 2005)
[code]....
this is the same code i used for my last app to populate a list box?
I have a program I'm trying to put together to allow my employees to submit shift reports. I'm doing this simply to make my life a little easier as this way, they will all be formatted the same. Instead of spending a large chunk of my afternoon thumbing through a bunch of differently formatted reports.
One feature that I need to figure out requires that one listbox can see what another is doing. Here, let me try to explain..
I have one list box that keeps track of EVERY action the employee does on a customers account. (cancel, upgrade, downgrade) and then a hidden listbox that JUST tracks "cancel" actions..one for "upgrade" actions and one for "downgrade" actions.
The reason behind that is that in the shift report, the all need to be listed separately. This way, I can just add each list to it's own array and list them where I need to.
The problem I've run into... If an employee handles an "upgrade" action at the beginning of the day..and then later on the upgrade is canceled, I can easily remove it from the main listbox that shows everything, however, I can't figure out how to find it in it's own listbox. The "Upgrade" box.
I have a program I'm trying to put together to allow my employees to submit shift reports. I'm doing this simply to make my life a little easier as this way, they will all be formatted the same. Instead of spending a large chunk of my afternoon thumbing through a bunch of differently formatted reports.
One feature that I need to figure out requires that one listbox can see what another is doing. Here, let me try to explain.I have one list box that keeps track of EVERY action the employee does on a customers account. (cancel, upgrade, downgrade) and then a hidden listbox that JUST tracks "cancel" actions..one for "upgrade" actions and one for "downgrade" actions.
The reason behind that is that in the shift report, the all need to be listed separately. This way, I can just add each list to it's own array and list them where I need to.The problem I've run into... If an employee handles an "upgrade" action at the beginning of the day..and then later on the upgrade is canceled, I can easily remove it from the main listbox that shows everything, however, I can't figure out how to find it in it's own listbox. The "Upgrade" box.
So unfortunately, on the shift report, it's still there even though it's gone in the program as far as the employee can see.The item in the main listbox doesn't have the same index as the item in each individual list boxes so I can't just tell it to remove the item at the same index..
Way to Print three listboxes
View 6 RepliesSo I have a ListBox that animates the images in it. Now I think this is impossible, but I need to let the user choose a custom animation speed. Here's the
vb.net
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles animate.Click
Dim cananimate As Boolean = True
[Code]....
I've got my first ever program and it's working. Having tested it a bit it would be helpful for the user to be able to copy the results printed in a listbox into an email or text doc. Just somewhere where they can make a note of it really.Is there something I need to do to enable it? All the google results I found were referring more to doing this in code. I literally want to be able to support Ctrl+A, the Ctrl+C straight out of the program to wherever the user wants.
View 4 RepliesI am starting to feel completely dumb when it comes to VB.Net coding. I am using Visual Studio 2010 and am trying to compare the numbers in 2 listboxes. If an item from list A matches an item from list B, I want it to add that item to List C. Once it has added the item to List C, remove those searched items from list A & B. Continue until it runs out of numbers to check.
If you are wondering what I am trying to do, I want to make a Common Factor list. I already have the Factoring list done, but got stuck here.
So far, my code looks like
Private Sub CommonFactors(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btn_Common.Click
Dim BoolAdd As Boolean, i As Double, j As Double
[Code].....
I have a datagridview (parent) and a (well, several) listboxes that I am trying to create a relation with.Datagrid has master records which contain ID fields to lookup tables. The lookup tables are populated into listboxes.I have 1 dataset which contains tables for my datagridview(s) and my listboxes.I need to create the relations so that when they click on a row in the grid, it shows the corrisponding item in the listboxes as well.Problem is, a lot of the ID's in the parent table are empty... so when I try to create the relation, it blows up.
Code: "This constraint cannot be enabled as not all values have corresponding parent values." I'm doing like like so
Code:
lo_relation = New DataRelation("RelationName",DataGridTableIDColumn, ListboxTableIDColumn)
I tried to reverse it, naming the ListboxTableColumn as the parent. That allows the relation to build, but I can't set the Listboxes .ValueMember to that...I'm kind of stumped... as it needs to be a two way relationship.
1) When the parent record (datagridview) changes, it changes the value in the listbox
2) When the Listbox changes, it changes the "value" in the parent datatable so it can be updated.
Would I resolve my issue if I populated the parent with a "default" ID in each field (say 0)... if the database value is null? And furthermore, populate each lookup table with a "blank" default value as well? i.e. First record is ID = 0, Desc = ''?
I've seen the code on this site to setup a drag-and-drop between 2 listboxes (and that works perfectly for me), but I have a need to be able to move items between up to 12 listboxes. For example, I move an item from listbox1 to listbox2; at some point in the future, I need to be able to move that same item from listbox2 to listbox3, then at another point in time from listbox3 back to listbox1, etc. When I make these moves, I need the item to be removed from its previous location. I've attempted to modify the 2-listbox code to include, on my test form, a third listbox, but that code copies to the third listbox, and when I attempt to move the item from the third listbox to the second, it, too, only copies and does not remove the item from listbox3.
View 1 RepliesI have almost completed coding moving entries between listboxes. My only hangup is: when I trigger the dragdrop event I get the target listbox x,y coordinates. I need a way to convert these coordinates to an entry number so that I can insert the source entry in the proper place. Any one have a solution?
View 2 RepliesI want to create a program that will let the user input a number and it will go to listbox1. Then listbox2 and 3 will do some algorithms that i made. The only problem that i'm encountering is the average of listbox3.
I have 3 textbox, 1 button, 3 listboxes.the names of the objects is default except to textbox2 and textbox3, I change their name to AveTTTextbox and AveWTTextbox.I use AveTTTextbox to get the output of the average for listbox2 and AveWTTextbox to get the average output of listbox3.[code]....
I have 2 listboxesdoes anybody have a code to remove dupes from both listboxes if dupes exist?
View 5 Replieswhat I want to do is make it so when i select the first item in Listbox1 it will also select the first item in listbox2 and if i select the second one it selects the second one on listbox2 as well. Is there a way to do this? i honestly have no clue and i know my code is wrong cus i do not know how to select the item # on listboxes but this is what i have:[code]
View 7 Repliesi am working in vb 2008, and i am having problems switching data between listboxes. I want all the data thats in listbox 2 to appear in listbox 1.here is my code.
While ListBox1.SelectedIndices.Count > 0
ListBox2.Items.Add(ListBox1.Items( _
ListBox1.SelectedIndices(0)))
[code]....
I have four list boxes, side by side. I've got a huge list of files that the program scans through and if (file insides) = (this) then; else if and etc. I know that part is working. The problem is actually the list boxes themselves. The reason I know this is:
I have four listboxes side by side, only the first one shows data, but if I delete the first one from the form, only the second will show data, if I delete first and second, the third one displays data, and if I delete the first three, the last one shows data. The problem is they wont display data at the same time. I was talking with someone else and they said I needed to change the IDs and I should see that option somewhere near the "Name" section. I use Visual Studio 2010... I don't see any IDs option to change. on how I can change this ID or maybe something I have to do to get these listboxes working?
How do I parse this and add the names and IDs in Listboxes ?
{
"data": [
{
"name": "Some Name1",[code].....
im trying to replace data from listbox1.selecteditem to listbox2.selecteditem i have a temp.txt text file that loads in to listbox1 (rlines) this is the methord i use to load each file in to a list box...
Try
Dim file_name As String = tempdata()
Dim stream_reader As New IO.StreamReader(file_name)
Dim line As String
[code]....
it dose what it says and replaces that line of text from the data loading in to listbox2 with the data i selected in listboz1(rlines) but what im looking for is to have the data load in to listbox2 and then have a button so i can select a line in listbox1 and in listbox 2 and it will replace the line from listbox1 in to listbox2 now i can add a line in to listbox2 from listbox1 with
listbox2.iteams.add(listbox1.selecteditem)
but cant find a replace for it
i have a form with two list boxes and two buttons to transfer data between the list boxes.one button is the add and the other the remove. some code for these two buttons?
View 18 RepliesTwo listboxes data to correspond to each other
View 1 Replies