if I can populate an ArrayList from the content of a listBox like so:Dim Array1 As New ArrayListArray1= TexttBox1.textTextBox1.text = ("Peter", "Joey", "Lucas", "Jack", "Stand". "FranK")Note: textBox1 may contains one or no more then 6 elementsPlz advice how should write this code.
View 4 RepliesI am developing a VB.NET ASPX file. This report is currently working but now I want to add a parameter which should be an array list displaying all records from below SQL query[code]...
View 1 RepliesI'm needing some help with populating a Treeview control using an ArrayList. The ArrayList contains a collection of a class called Task. The class properties contain the following:
1.) taskID (int)
2.) parentTaskID (int)
3.) taskLevel (int)
4.) subTasks (ArrayList)
5.) taskName (string)
Each Task instance can contain subtasks (which is a collection of the Task object), which can also contain subtasks, and so on. The base task starts at level 0. A subtask of the base task would be level 1. A subtask of a level 1 subtask would be a level 2, and so on.
-- The parentID would be the taskID of the parent Task. The parentID at the base task (level 0) would be -1.
[Code]...
I'm trying to read and load the content from the attached text file to a arraylist with the code bellow.
but what is happening is that not all the lines from the text file are loaded in to the arraylist, the reading jumps from one line to other in the text file.
Dim FILE_NAME As String = ((My.Application.Info.DirectoryPath).Substring(0, (My.Application.Info.DirectoryPath).LastIndexOf(""))) & " est.txt"
Dim lista_barras As New ArrayList
Dim lista_barras_esp As New ArrayList
[code]....
I was given a task to actually to develop a application where it will automate the process of extracting data values from excel files and add in into access table. Is there any online examples or any advices on how to go about developing this?
View 1 RepliesI have a master page called SampleMaster.master and this page contains a Repeater control
The Repeater control will be used to display the relevant tags associated with each content page and the tags will vary between content pages
The data extraction method Tags.GetTags() is working but I do not know the best approach to populate the Repeater control in the master page dependent on what the content page is.
Would the code reside in the masterpage page code behind or the content page code behind?
I have a listbox and i populate it with data in my code like this on the page load....
[code]...
So say one item in the list is displayed Ted Jones (123) and its valuefield should be 123. Im just not understanding what i am doing wrong here.
I've been trying to solve it for more than a week, but I need help on putting an arraylist inside a listbox.
That's what the GUI should look like in the end, all the information has to be saved in an arraylist; I should be able to add a new customer; click on a customer entry to edit it.
How to put an arraylist inside a listbox but that's already solved. [URL]. There is all my code, so I need to be able to edit the selected customer, clicking on customer>change from the Main GUI. Then the CustomerFrame GUI should open, and all the texboxes should show the information that is in the listbox. There I need to be able to edit the customer and save it again.
I know this is the Code to display the item selected from ListBox in a TextBox
Private Sub ListBox1_SelectedIndexChanged(ByVal sender As System.Object,ByVal e As System.EventArgs) Handles ListBox1.SelectedIndexChanged
TextBox1.Text = ListBox1.SelectedItem
End Sub
But that's not all I need to do, the index of the listbox is divided into all the items of the arraylist. There is the complicated part. How to divide each item of the arraylist into individual textboxes?
I'm working in VB.NET
I have an ArrayList named Invoices populated with objects of the class Invoice.
I'd like to data bind this to a ListBox so that as the contents of the ArrayList are updated and changed the ListBox updates. I've implemented a .ToString function on the Invoice class, I just don't know how I'd go about binding the ArrayList to the ListBox.
Add an ArrayList To Threaded Listbox i have been working on this for ages and cant get it to work. here is what i have so far... this gets dup sub to work in new thread when i click button2 the dup sub will filter through Listbox2 items and sort through the listbox and if it isnt a duplicate it will add the line to an arraylist i now need to the array list (decleared as arr) to go into listbox2 in short i need to make this line of code work as a crossthreaded call
[Code]....
i am trying to add items to a Listbox, but first i need to know if the item is already in ListBox. I know how to compare the selected item in a combo with the arraylist. I use this
If Indicadoreslist.Contains(Me.ComboBox2.SelectedValue) Then
MsgBox("It exists")
Else...
[code].....
I would like to know if there is a quicker way to load a text file into a listbox/arraylist than this:
Code:
Dim fileList as New ArrayList
Dim fileReader As New System.IO.StreamReader("textfile.txt")
Do While fileReader.Peek() <> -1
[Code].....
If I need to load several text files into different arraylists, especially if the textfiles have a lot of lines, this process is very slow. Too slow for my current app to work smoothly, actually.
So, is there any faster ways to load a text file into an arraylist? Or if there isn't, is there some quick way to easily access and change data that is on a particular line in a textbox, so that I don't have to load the text file into an arraylist?
I need to know how to save listbox items into ArrayList And restoring these items back from Arraylist into Listbox I tried this code but it returns Null Error Exception
[Code]...
I have a form that I want to add the content of the datagridview to a listbox every time I double clik on the cell of the datagridview, then store the contents of the listbox in my database.
View 1 RepliesI generate random number and it is of four columns in the listbox. I want to print it out. With the following VB.Net code, it prints only the first column, not the other three columns. Can any one help me, so that I may have all these columns printed out.
Public Class Form1
Private Sub Button2_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles Button2.Click
PrintDocument1.Print()
End Sub
[code]....
I am using Visual Studio 2008 which should be VB.NET 3.0 language.
I have searched and searched for finding the answer on saving content / items in a listbox with strings. As you know the code for saving a text in textbox and get information again in application is[code]...
I tried to use this code but it will not show in my listbox
Form Load
Private Sub Choose_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
If My.Computer.FileSystem.DirectoryExists("C:ACCOUNTSAccountUserlist" +
[Code]....
Obtaining content of other application's ListBox
View 4 Repliesgot just a simple question about sending the Richtextbox content to Listbox2 at Enter* Keydown (couldn't find some info about it?). and Listbox1 should simultaneously show the current date and time as an item.
View 5 RepliesI need to load the contents of a text file (itemInfo.txt) into a list box
Public Class MainForm
Private path As String = "L:Visual BasicSequentialHW"
Private Sub MainForm_Load(ByVal sender As Object, ByVal e As System.EventArgs)
[Code].....
I have a Report I created with Visual Studio's VB.Net ( I guess this makes my report embedded), which I can select a date range like starting and ending date but the drop-down listbox for the Name is empty and I have to type a name into it to work. I need to be able to choose the name because I won't know who is on the list.
View 1 RepliesI am trying to delete an item from a text file based on if an item appears in a listbox but keep getting an error " Index was out of range. Must be non-negative and less than the size of the collection." The line it is returning the error on is the the first IF statement of the below text.
Code:
Dim Lines As new List(Of String) (IO.File.ReadAllLines("Carl.txt"))
For i As Integer = 0 To Lines.Count -1
If Lines(i).Contains (listBox1.text) Then
Lines.RemoveAt(i)
End If
Next
IO.File.WriteAllLines("carl.txt", Lines.ToArray)
End If
VB.net 2008 express This is what I have so far, and it loads a list of files from a text file. Now I need to be able to delete them all from a certain drive and all sub folders in it. For instance I push the delete button and it goes through the entire list and deletes all the files in it from the designated drive and all it's sub folders.
Code:
Public Class Form1
Inherits System.Windows.Forms.Form
#Region " Windows Form Designer generated code "
[code]....
I've given up on my harder stuff and have simplified it to something else. There are no errors that pop up now but the list box doesn't populate! I took the code from a book and there's a data adapter, data connection, and data set on the form already (they're not named in this code though, since the book didn't say to). When the program opens, the list box has a line of text in it and the list box doesn't fill with the right items.
Private Sub EditStock_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
Try
Dim dsitemlist As New DataSet
Dim itemlistadapter As New OleDbDataAdapter _
("SELECT ItemName FROM Stock", ConnectString)
[Code] .....
And here's what shows in the box.
system.data.dataviewmanagerlistitemtypedescriptor
I come from Access and I am developing now my first windows form app in visual basic 2010 based on a Access database *.mdb. The thing is i have an access db with 5 tables. I have created the forms, connected to the database, all is working great. Parent- child relations are working, datagrids and comboboxes populate the right way, buttons are working.
But now I want to populate listbox, and combox from tables with queries. Like in access I would like, for example to populate two different listboxes bound to the same table with different queries, so that the listboxes give different results, based on different variables or textboxes.
But I don't know how to attack the problem: the query works against the tableadapter, so the info it gives back is always the same. I have tried to duplicate the tableadapter of the table i want to query, writing different sql queries in both, but it does not seem to work. I don't know in what direction I should ivestigate: LINQ, sql queriess, coded queries, filtering the listbox...
I've been working on this for three days now and I can't seem to get my listbox to populate. I'm connecting to an sql database. Where am I going wrong? Dim cmd As New SqlCommand("SELECT DISTINCT natureport FROM rates ORDER BY natureport", conn)
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I'm trying to populate a listbox with every file that was last accessed more than a year ago but I've hit a snag, i cannot get the fileinfo for some files because the path is too deep, is there a way round this
Dim drivestring As String = lstBoxDrives.SelectedItem.ToString
Dim directoryName As String
Dim fileName As String
Dim accesstime As Date
Dim FileProps As IO.FileInfo
[Code]...
The specified path, file name, or both are too long. The fully qualified file name must be less than 260 characters, and the directory name must be less than 248 characters.
I can get a single column but how do I get 2?
myTenConnection.Open()
myTenAdapter = New MySql.Data.MySqlClient.MySqlDataAdapter("SELECT ten_name, ten_contact FROM tenants ORDER BY ten_name, ten_contact", myTenConnection)
[Code]....
I have a class with a collection of objects of type clsCDImage
clsAllCDs:
Imports System.Data.OleDb
Public Class clsImages
Private mAllCDimages As New Collection
[Code].....