Populate Listbox With Collection?
Aug 31, 2011I 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].....
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].....
I would like to populat the Listbox collection from a column from a Access database I already created the name of the collection as collections. I can autocomplete/Suggest a Textbox with no issues.[code]
View 2 Repliespopulate a TreeView Nodes Collection.I have a table (Employee) which has an EmployeeId, EmployeeName and ManagerId columns.
View 8 RepliesIf I run my web service code, it generates a serialized XML with only one level, that is,ParentElement and ChildElement. My goal is to make it a multiple XML levels that even grandChild will show, as the sample output below. How can I achieve this using List ollection looping. Do I need to create several functions that returns List objects for each column of the dataset I have?
public List<MyClassEntity> ExtractEmployee(...params here...)
{
...SQL CONNECTION HERE AND SP TO RUN THE QUERY...
[code].....
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 have a list of Active Directory entries (computer names) as a Collection data type. How can I add the computer entries and the pertinent columns to the DataGrid control on my WinForm? I have borrowed this code from some web site to add the list of computer to the pcList which is a Collection type.
pcList.Add(dirSearchResults.GetDirectoryEntry().Name.ToString())
I am using the following code in the load event of my form to populate autocomplete string collection but it gives me DBNULL error. Is there any other workaround where it skips DBnull values?
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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 add numbers. So if there are 2 numbers in a listbox, theyare summed up. If there are 3 numbers in a listbox, they are summed up
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What I'm trying to do is to count the number of items. Then I start my counter at 0. For each time the counter goes up, I add another row from the list box. and loops until my counter reaches the number of items in my listbox. I'm stuck intTotal. The only way I know of adding the totals is lstCosts.Items(0)+lstCosts.Items(1)+lstCosts.Items(3). But what if the user enters 4 numbers? I can't find a way around that. I think this should be a very simple question and I think only this line needs to be changed.
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)
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I'm doing a win form application in visual studio 2008 and using 7 listboxes where my sql query will populate all customer from customertable. It's 7 cause it's one for each day, my problem is to get customerid when I select one of the customers from any of the listboxes to my textbox. Since there are 7 listboxes I can't use "data bound item" function, in that case it would be easy to write code like this: textbox1.text = listbox1.selectedvalue.tostring(
View 6 Repliesthis is a library management system, i dont know why it doesnt work, my code in the issue form is just the same as the return form but it doesn't work right here. it just populate the listbox with the info. from the database. my code is here,
Dim nnn As Integer
Dim mmm As Boolean
Dim xxx As Integer
[Code]....
I'm in the process of creating my own version of the Combo Box as MS version does not give me the flexibility I need, this is work fine. I just had a little niggle
The List box contains/uses ObjectCollection to hold all its objects, but it does not have the facility to inform by the way of events that an item has been added etc.
If I inherited from this collection could I add the necessary code to make this happen, I have done this in my previous controls I�ve created when I wanted this facility.
I am creating a glossary of words used in a study course. I would like to populate listbox with words entered into an imputbox.
View 8 RepliesCurrently, I have a listbox lstInventory where I have loaded some database information from a .mdb file. I am able to add new records, and they all display correctly.
Yet, I can't seem to retrieve or access any of the listbox items. (Not trying to reaccess database in here, yet). I am hoping to "Edit" an existing database record by matching it to the lstInventory's selecteditem property. Unfortunately, I am not able to retrieve anything (tried traditional CType(lstInventory.selecteditem.ToString, String) approach, as well as a debug.write approach (which I can't seem to display, even with a Listener-which is another issue in itself).
Furthermore, when I check the listbox.items.count property, it prints out as a "0" [using a messagebox.show()]
I have tried searching multiple forums, but found lots of "database into listbox" threads, and the MSDN website hasn't helped me yet. Do I need to know the collection's name (what would it's name be based on ?)? Or am I not converting the object into a printable/countable quantity?
I am writing a database using OOP, i have created my classes ect and i am able to input data.
I have four textboxs, and two listbox's. The first listbox lists all the categories which i have managed to do. Now when the user selects a catelgory a list of objects under that category are listed in the second listbox which the user then selects to display any related data and this is the problem i am having.
[URL]
Code:
Public Class BaseClass
' ScrName is the name of the script file.
Public Property ScrName() As String
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I am trying to populate an array from a listbox.My listbox items contain something like this:
1 for January
10 for February
3 for March
I have code in place and it was working, but I am taking the first character of the listbox item to populate the array. If the value of the listbox is 10 for February, I need to get 10, not just 1. Can I do something with the string that says I want to trim everything from the space to the end? Since they are all formatted the same way, if I could trim out anything from the space on, that would work.
Here's what I currently have:
ReDim m_adecRainfall(m_astrMonths.Length - 1)
For intCount = 0 To m_astrMonths.Length - 1
m_adecRainfall(intCount) = CDec(lstMontlyRainfall.Items(intStart).ToString.Su bstring(0, 1))
intStart += 1
Next
I'm trying to get a listbox to populate a list of processes that are neither running nor in the "blocked" list. This code is in a timer, so it also checks if the process is already in the list.
For Each proc In Process.GetProcesses
Dim allowed As Boolean = True
For Each item In Blked.Items
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It is strange because this is populating the list, but adding the same process over and over again, even though I seem to have the checks in there.
Here's my code, all it does is display the numbers 1 - 10. I want it to display the numbers from the column Sales, from the table Songs.
Imports System.Data.OleDb
Public Class Form1
Dim con As New OleDb.OleDbConnection
Dim dbCommand As OleDbCommand
Dim strInsert As String
[Code] .....
I am currently using the NorthWindDataSet from the msdn tutorials.So far, here is what I have to populate one of the listboxes on my form:[code] I make a selection in ListBox2 I would like ListBox3 on my form to be populated with that particular person's Order #'s.
View 2 Repliesbasically, i'm creating a program that is saving text files based on user input.
another screen is then needing to transfer the saved information into textboxes.
to do this i want the saved .txt files' titles to shows in a listbox, and when each selection is made, the textboxes are populated with the information in the .txt files.
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 think the answer is to loop each of the cells/columns/rows in excel then show it in the listbox... i think.. the problem is i don't know how...
is populating from a text file the same with populating from an excel file?
Dim xlApp As Excel.Application
Dim xlWorkBook As Excel.Workbook
Dim xlWorkSheet As Excel.Worksheet
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I just wanna ask how can i add, delete record in datagrid that is bind in a textbox using ms-access.
how to populate listbox from ms-access database.
My Access database has one column named 'Term' and the Table name is 'ATG'. I require to populate my listbox with data in the 'Term' columns. I'm unable to do that using this code. Can anyone tell me what's wrong with this (it displays numbers from 1 to 10 and not the database data)
Imports System.Data.OleDb
Public Class Form1
Dim dbConnection As OleDbConnection
Dim dbCommand As OleDbCommand
[code].....
Is there a way in which I can populate my listbox with an Access (.mdb) database and search for values in it. Also, can I move selected values back & forth from that listbox to another listbox (or textbox). Is this possible using Visual Studio, VB.Net?
View 6 Replies