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
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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.
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"
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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.
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
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Public Class notifierMain
Public Class Contacts
Inherits List(Of row)
Public Sub New()
[code]....
When I debug this winforms application I get curType = "notifier.notifierMain+Contacts+row" I want to the Validate function to know it is in MyContacts. How do I do this?
I wish to make a project where a teacher views a list box with a list of students of a class. When he selects a name from the first list box the second listbox would change its data to show the grades for that one student.
View 10 RepliesI'm getting System.NullReferenceException error when I try to add the employee info to the Employees list.
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I'm trying to figure out a way to sort the entries of a listbox... but in a different way instead of the obvious one (sorted property). First of all, I need to explain how the items are populated at first:
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y have this class
Private Class MyClass
Public Property propertyOne() as String
Public Property propertyTwo() as String
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I have a base class (ex: Class1) containing a list of another base class (ex: ClassA). Each child class of first base class (ex: Class1AA, Class1AB,..) containing a list of child class of second base class (ex: ClassAA, ClassAB,...)The client must never know which child class is using, then i don't think i can use generic for my bases classes.I try something like this and many more, but i always received errors..Imports System.Collections.Generic
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I'm trying to code a class of RandomNumber. One of the class methods needs to populate a "List (Of RandomNumber)" ... which was passed as a parameter to the method ... with 10 random numbers between 1 and 50. DEAD SIMPLE :)
View 6 Replies1 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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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
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I am using a ListView control to display Pictures along with description and caption. I used to save the full path of the image in the url field, so when I display them in the ListView I don't need to edit anything. Now I am using something like:
HttpContext.Current.Server.MapPath("~/photos/") + savedURL
How can I edit my ListView to make it show the images?
I used to do the same to GridView when in GridViews RowDataBound event I manipulate the contents like:
Dim photo As New Image
photo.ImageUrl = "~/photos/" + e.Row.Cells(TheCellNumber).Text
e.Row.Cells(0).Controls.Clear()
e.Row.Cells(0).Controls.Add(photo)
I can't seem to get the syntax right for this. I have a structure stored in a generic list and when it displays I get this "GenericList_T_.Form1+stuMotorInfo" in the messagebox. I've tried a few things and get roughly the same thing.
Here is the code:
Option Strict On
Public Class Form1
Private Structure stuMotorInfo
Public MotorId As String
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i am making a safari booking system, and i have a combo box list(contains a list of hotels) how do display the prices of the hotels in a text box
View 1 RepliesSo we are just starting to learn about list boxes in vb1. In this program the user enters up to 10 scores and after each input (decInputScore) the total score so far has to be calculates (decTotalScore) and then of course when all the scores are entered, at the bottom the final score it calculated. (decFinalScore) (decFinal). I'm not exactly sure what I'm doing wrong, I can't get it to calculate the correct total scores after each input, and I'm getting 0 as the final score. Here is a visual of what the form should look like: the black square is (btnEnterScore) a pop up message box comes up in which the user enters each value when clicked.[code]
View 1 RepliesI am trying to get VB.NET XML Comments to work with IntelliSense, and maybe it doesn't work the way I think it does.
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This should, when you are typing in a function, display the "Get or sets the Patient Code" then below that, it should display a list of bulleted items with "Validation:" as the header? Maybe I am doing it wrong, but it doesn't seem to be working correctly.
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.
View 2 RepliesI have a list of string. When user inputs chars in, the program would display all possible strings from the list in a textbox.
Dim fruit as new List(Of String) 'contains apple,orange,pear,banana
Dim rx as New Regex(fruit)
For example If user enters a,p,l,e,r , then the program would display apple and pear. It should match any entry for which all letters have been entered, regardless of order and regardless of additional letters.
This is my code where I send a query to the console; how do I change this to be sent to a list box ?
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Public Class Form1
Dim strname As String
Dim intage As Integer
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i am trying to make this program that asks for your name, age and a password the user already has and returns a id number that is generated randomly. my question is how would i match a word to a predetermined list of words then it would get deleted off that said list so it could not be reused.
Am using MS Access as my back end and I am having a table called "Dept" with 2 columns (dename & cname). In Vb.Net when I click a command button, all the data's of the first column should be displayed in ListBox1 and the Second column in ListBox2. I do not know how to proceed
View 1 RepliesActually I want to display the messages shown in cmd prompt like, if i do:
Ping google.com -t
The following message will be displayed in the cmd prompt:
Reply from 74.125.235.17: bytes=32 time=133ms TTL=51
Reply from 74.125.235.17: bytes=32 time=130ms TTL=51
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I want to display the exact information into the list box of my program instantly when it is displayed in the command prompt not after whole process is completed.
As in the ping google.com -t, I want to display the each reply message instantly in the list box.
if i pressed the RadioButton .. ENGLISH.. only Teacher's which teach English will be displayed in the listbox and so on. there is in access table called TEACHER which has all these information. i used the following code for displaying the TEACHERS' name in listbox and it worked pefectly but what i want is displaying according to radiobutton checked.
Sub conxn1()
Connection.Open()
Dim da As New OleDb.OleDbDataAdapter("select * from Teacher ", Connection)
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I am doing my application with ASP and VB and I want to display a list off rows in a gridview and associate a contextual menu to each line.
View 2 RepliesWhen an item is selected from the list it displays in the text field of the combo box and I want to clear it without clearing the items in the list. I've tried [dropdown list_name].text = ""[Eg:- CBSelect.Text = ""] but it doesn't work since the text entering field in a drop down list box is read only.How should I do that. By the way, I'm coding in VB.NET 2005 so please give answers in VB.NET 2005.And my selection is from combobox its clear. same combobox property ( DropDown style = DropDown List ) text is not clear.
View 5 RepliesI have a table being imported into my VB application that has 3 columns. I have written code to import the table, and have written code to display on the first column (country) in a list view.
What I want to do now is have the user select / highlight an item in the list view, and have the third column (currency) related to that selected country appear in a text box when a button is clicked.
Here's the code I've written that successfully imports the data and displays the first column:
Private Sub frmCountry_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
Dim dataCountry As New DataTable()
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Should I perhaps use something other than a list view?
I want to read a number of items from a file and then associate each of those items with a new button at run-time, so that when the user clicks one of the buttons I can display some information about that item.Can I use a LIST to manage these buttons and items? Can I create a new class and have each list item of that class, such as 'btnID', 'btnText', etc... ?
View 2 RepliesI am trying to create an list or an array of a class.Here is my "Ingredient" class that I am trying to create a list of:[code]In my "recipe" class, I am want to create a list (or array) and I am drawing a big blank on how to do it. Can anyone point me in the right direction?
View 2 Replies