Storing List And Data And Displaying In A Listbox?
Jun 12, 2011
I have a form displayed where a user can can select a 'function' from a list box. That 'function' has a corresponding ID number which I need to be able to take and use later in the code.The List of functions is preset (about 150+ them and the IDs are already assigned (so I can't just use the index).So if the user selects "Function A", I need the code to set a variable to, for example "42" (or whatever that Funtion's ID is).
I was going to do this using listbox.item and listbox.itemData, but I'm using VB.Net in VS2008 and I understand that function is no longer present (to add ItemData at design time).Here's where it gets complicated. When the form loads it looks at the variable containing the FunctionID and if there is one present, I want it to populate the co-ordinating FunctionName. I can do that if I know the index number, but I don't know how to look at the FunctionID and return it's index (all FunctionIDs are unique).
A) store the info, either in the Listbox using ItemData, in an array (but I'd prefer to do it at design time), or some other way you might suggest.
B) cross-reference the ID and display the name in the listbox when the form loads.
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Mar 6, 2012
I am trying to understand classes in VB 2010. I am a bit confused with displaying information from a list into a listbox.When I run the following code, the word collection appears in my list box. How do I drill down into 'hostnames' to display the info I want.
Public Class computer
Private _HostName As String
Public Property HostName As String
[CODE]...
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Sep 19, 2011
What I'm trying to accomplish is first of all, adding items in a list box, but while doing so, store data into that item so when the user clicks on it, the data will be brought up into the correct text boxes.
My idea on how this will all work out has to do with array lists. I'm thinking each time an item is added to the list box, an array list is generated containing all the data from the text boxes. The array list would be named as the text of the list box item.
So then when the user clicks on one of the items, it can find that array list easily because of the selected index, and then update the text boxes with the data.
Is the way I'm thinking of possible? If not, or if there is an easier what, what would that be?
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Mar 28, 2012
I want display data from database in Listbox...Here is my code, It is not working. In Listbox it is displaying as Object[,].Array..
[Code]...
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Aug 10, 2010
i have problem in displaying data in list box after i click in any row in datagrid view
here is the code
Dim sql As String
Dim conn As New System.Data.OleDb.OleDbConnection
Dim lst, lst2 As New ListBox
[code]....
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Jan 3, 2011
I want it so every time I click an ITEM in the Listbox it displays ALL the data into the textbox. I know there's an easy way using table adapters and binding the listbox, but I'd prefer to do it this way for my project.
So this is what I got.
Lst.DataSource = ds
Lst.DisplayMember = "tblStudent.FirstName"
Lst.ValueMember = "tblStudent.StudentID"
[code]....
It only adds the first rows details to the text box when I click the second record the first rows details are still there.
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Nov 28, 2010
I'm trying my best to learn Silverlight/WP7 but it a steep learning curve, coming from winforms/CF.
I'm trying to fillout a listbox from a collection but it does not display anything and I'm not sure what I'm doing wrong.
I think the Items Collection (JobCollection see zip) is getting added to the itemssource property but nothing is displayed.[code]...
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Dec 1, 2010
What I am trying to accomplish is this: I have a login page were a student logs in. After the login the student will be taken to a student user page. This page has 2 list boxes. The first is showing the exams that he has passed and the other shows the exams he has yet to complete or fail. I can not get any data to display in my list box. If I can figure the first one out I can do the second one easily but I can not get the first one to work. Here is my code that I have so far:
Private Sub Student_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
Label1.Text = "Welcome " & _passedText
[Code].....
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Dec 13, 2011
I have a .txt file that I need to be able to search from a text box, and then display the results in a listbox. Each line is formatted as the following.Jim Wells,1/12/85,3,999-555-4562ith the textbox I need to search the file for the third value (in this case the 3). But I need to search all lines of the file, and any line that has a 3 or whatever number is searched in the textbox needs to be displayed in the listbox in this format.
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Aug 5, 2009
My book uses Console app to display the result of a code but I prefer working with Windows forms controls. translate the code below so that it displays in a ListView or ListBox instead Console? Where do I find tutorials on how to use ListView/ListBox?
Dim ds As New NorthWindDataSet()
Dim tblCustomers As NorthWindDataSet.CustomersDataTable = ds.Customers
Dim rowCustomer As NorthWindDataSet.CustomersRow
[code].....
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Apr 25, 2011
I need to construct a small program that "stores" entered test scores into the program then when a button is clicked, it will display the scores with the appropriate names in the box below. The values are the names "Brian" "james" "jimmy" "jock" and "gok" and there are two test scores "main test" "small test".. I need to be able to "store" these in a "database" and then when the user clicks "show marks" it displays all the names with the marks in a table format. I'm totally screwed and i dont know where to start..I already have done a little coding for the gui such as a password entering system and all that works, all I need now is this storing thing.
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Apr 22, 2010
I have a list of names in a database and what i want is to get all of these names and display them in a label or a text box to the user on the website. I have tried to do this using a for loop but it is always overwriting the label each time. I have a list of 10 different names in the database and what it is doing is putting the first name in the label and then overwriting this with the second name and so on until it reaches the last name. I think i need to store each of the names from the database into an array or an arrayList and then make the label display all of the contents from the array or arrayList. The for loop i have used for this is:
Dim g As SQLadmin = New SQLadmin()
g.DB("SELECT nameOfPerson FROM Persons")
For i As Integer = 0 To g.array.GetLength(0) - 1
[code]....
i can select the names from the database and store them in an array then make the label display each of the names.
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Oct 29, 2010
Ok, so I`ve been studying a bit of VB lately.. bought a few books and read lot`s of articles and seen hours of instructional videos, and I slightly start to get the hang of a few things.. :) I`ve recently started a fun little project, but I seem to lack a bit of knowledge to reach my goal. I`ll first try to describe my project:
[Cde]...
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Jun 5, 2009
I have an app that the user picks items from a checkbox list. I have the items selected saved to a seperate db table. I want to be able to have the selected items repopulate as selected if the user reopens the web page.What I've tried:I've pulled the items selected previously back to a hidden list box which works but I can't figure out how to compare what is in that list box with all the items contained in the checkbox list (this is being populated by another seperate table in the db)I've tried just a straight query and used reader but keep getting errors about cast and if I switch it to a GetDecimal, when I try to see what it's pulling, it's not the data but maybe the index: See below:Does anyone out there have a sample of can help me figure out how to just have this stupid checkbox list reselect the items that the user previously selected and saved to the db?
[code]...
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Aug 1, 2009
I currently have a list of words in a text file sorted in to alphabetical order and put into lower case, but I would like to be able to also display the line numbers on which these words are associated with.. but only one instance of.
For example,
"This is a random text
file that I
have just made
up this second"
[Code].....
As you can see above, I would like to show that "this" for example appears on line 1 and 4. Hopefully tabbed so that it keeps a nice look to it.
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May 4, 2012
I'm studying VB 2010 at uni and struggling with this assignment, I'm stressing now with one week to go before its time to hand it in and still not knowing how to do it (even though i've read the whole textbook!)
I have copied the instructions and the files I have been given.
1 List all of the data from Teams.txt in a Listbox. Include suitable headings.
2 List all of the data from Results.txt in the Listbox (use the same Listbox as in 1 above). Include suitable headings. Note that you cannot assume that the file contains only results for the first 3 weeks of the season. Your program should be able to process a results file with more or fewer results.
3 List all of the data from Results.txt in the Listbox. However, in this case the actual team names should be output (your program will need to get this data from Teams.txt. The data should be formatted so that it is aligned correctly. Include suitable headings.
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Dec 21, 2011
I am creating a program with multiple Forms designed to track multiple projects.The first form is designed to setup new projects and obtain previous projects, from there the other forms open to be filled in with information.For new projects the next forms open blank but I then need these later forms to be tied to this project name so that it can be selected from a combobox and the information will be already populated.tieing the information on the later forms to the projects populated in the combobox so that it appears when a specific project is selected.Is this able to be done without creating databases?
As an example, say I create a new project then a new form opens and I add some information to a textbox.I would then like to be able to save the information so that the project name moves to the combobox on the first form (I can handle this) and the information input in to the textbox is tied to the project name so that when the program is reopened and the project name is selected the second form opens with the textbox populated.
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Feb 13, 2010
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
[Code]...
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Sep 12, 2008
I have a listbox where the user can add items to it with the following schema "count, id".I want to take each item from the listbox,use the split function so I can "take" only the "count," part and then add the "count," part of each item into a string.I mean I want something like this:
user adds 3 items in the listbox:
1, 100
2, 200 and
3, 300.
I want to make it,so a string can be formed, and contain the "count," part of each item which in this case is;
in the first item the "count," part is "1,",in the second item the "count," part is "2," and in the third it's "3,".I want those "count," parts to be stored into a string (which will result into having this string "1,2,3,").
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May 28, 2009
In my application i am having lot of functions and now i want them to be public function i mean that where and what is the best method of keeping this function in one file or control where i can call them from any where in the VB application , i am using visual studio 2005?
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Jun 10, 2011
I'm storing images in a List Of Image. When I want to clear/remove all the images it contains should I dispose & set each item to nothing before using .Clear? Or can you just call .Clear? I'm doing it like this for now...
' remove all images in list of image named "images".
For i As Integer = 0 to images.Count - 1
images(i).Dispose()
images(i) = Nothing
Next
images.Clear()
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May 11, 2011
The scenario is:
1)A large 2 dimensional array (400,20)
2)The program needs to access particular chunks(for example (0,20) to (50,20)
3)The program will open multiple files and process each into it's own 2D array (400,20)
What I have right now is code capable of creating the array, but no way to store the array so that I can open a new file and process that data into another large array. Someone mentioned the generics List(of T) might be a good way to store each new array as you could use the Add function. I have done some research on the List(of T) class but I'm not totally convinced that is the way to go. I'm just looking for some direction as I've just started on .net this year.
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Feb 2, 2010
Firstly i apologise for another topic on a subject i have created already but this is a slightly different question and not related to LINQ at all despite the fact the code uses LINQ (the linq works fine and creates a List(Of Test) where each 'Test' contains a List(Of TestList) This data could be anything i guess and could come from an array or a database rather than xml literals.Ok, essentially i have a list which contains a list and i wish to display all the properties (List and list within this List) onto a DataRepeater Control. I have developed a testbed to get this working so i can implement it into my main application. Firstly I'll show the current code and how to construct the form and after that i will explain what i have tried and what i have had happen from these trials over the last week.
Public Class Form1
Private Sub Form1_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
[code].....
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Nov 29, 2009
I am reading data from a socket (as bytes) and storing this data in a string. Then later i need to access specific bytes within the string and do some math with them. However the bytes that I read back from the string are not what I am expecting.
[Code]...
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Mar 10, 2009
I have a listbox displaying information about different workstations detected on a local network. Each line in the listbox is a different device. I would like, if possible, to display images on the end of each line (A green dot for one rule, a red dot for another, etc).
I have the images of the 'dots' as very small gif files.
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May 4, 2011
My program is working and doing everything it is supposed to do outside of two things. My program is supposed to take the items that are under 5 items and show up in a listbox saying they are low stock by clicking file and then display low stock items. The other problem I have is that I am supposed to show everything in the inventory that has a retail price given to it in the other list box that is blank on my mainform. The attempt I have made on the low stock inventory makes the program go into debugging mode.[code]
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Mar 14, 2012
I am using Visual Basic 2008 Express Edition and I am trying to set a listbox so it starts to scroll when it hits the middle point of what is viewable on my list. I also want to set it so the list is always visible so you when you reach the bottom of the list you can scroll down to the bottom but if you scroll back up once it reaches that middle point it will start to scroll up again.
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Mar 13, 2010
I am suppose to write a program using if statements and loops: Create an application that reads an integer number from the user and then displays in the List Box all prime numbers (for this project we are going to violate "positive" rule and make our prime numbers be negative as well) between user's number and zero 5 numbers in one row. The application also displays how many prime numbers there are between user's number and zero, and the total sum of all these prime numbers.
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Dec 24, 2009
I am displaying four fields from a access database. This code displays the records in listbox4.
Me.ListBox4.DataSource = DB
Me.ListBox4.DisplayMember = "fldRecNo"
Using the doubleclick event, I would like to display on a label the record number that I doubleclick.
Windows 7 and VB 2008
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Aug 29, 2009
Recently I have browsed the web for ways to display a list of files and folders in a list box. I have successfully been able to display files in drive C and get a nurerical value telling how many files were found. However my efforts have been hampered by three distinct problems. I have some experience using batch files and when using them you can state things like "%WINDER%" to go directly to windows folder. I am wondering if there's anything like that used for navigating. And if so could an example be made of it just for clarity?
My second problem is I cant seem to be able to display files and folders. I have been limited to one or the other. That and I cant figure out how to navigate into them to display there contents. The next problem I have is simply having a user interface so you could type a file path or file extention and have the program navigate to it. Is it is possible to click a file path in a list box and chose to delete it. My second last Q how do I display all files and folders including hidden files? And How can I count all files and folders with there contents to dissplay in a listbox.
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