List Box Item Affects Text Box Data
Apr 16, 2010
In teaching myself how to use databases in VB applications, I've managed to
1. Get list box data bound to a database
2. Filter number of items displayed in list box based on user input (letter entered as a filter)[code]...
How can I now have it so that the user selects an item in the list box, and then text boxes on the same form are populated with the relevant data (i.e. database fields matching each text box, with another field from the same table having already been used to populate the list box)[code]...
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Jun 5, 2008
I am building a small utility to transfer files. I have a list box that I am adding the file names to be moved. The question is how to I add a text and a value field to a list box item. This will not be databound it is an unbound list box. I am using this to add the filename but I want the value to have the full path for later file moving. So how do I add a value and a text to an item?
Me.lstFilesToMove.Items.Add(System.IO.Path.GetFileName(openFileDialog1.FileName))
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Aug 8, 2010
I wish to get the Text of item where I know its index! most of the codes I have founds Return the index number not the text it self!
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Mar 20, 2011
In vb.net, I am having myList as List(of myClass) and myData as myClass. So how do I find whether if myList contains myData or not? Currently I am doing it like:
dim myList as List(of myClass) = myClasses.GetData()
dim myData as myClass = myClasses.getData(1)
for each Item as myClass in myList
if Item.uin = myData.uin then
msgbox 'yeah'
end if
next
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Jan 1, 2012
I have a list box on the form which functions as a copy/paste. When you copy something, it is automatically added to the list box as a "clipboard helper". Here is the problem,however: if the text is more than 1 line, the list box does not show all the text.It ends up looking messy.So getting back to my question, is it possible to make the list box item height for an item depending on the amount of lines that item contains?This is a one line sentence in the list box and should take up one line.This is a multi line sentence in the list box and should take up two lines for item height.
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Apr 12, 2011
Does anyone know of a control such as a Checked List Box where each item can have a value against it.For example you have a list of fruits and in the listbox it displays Apple, Orange & Banana but the values for those items are A, O & B.
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Mar 20, 2012
Just wondering if its possible for an image to be displayed along with some text when an item is clicked in a list box?
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Apr 20, 2010
Function runs fine on the listbox until i use the btnUp_Lanemgr click event
throws an exception in function (below in bold) "Unable to cast object of type system.string to type namespace.myitem"
what i can do to make this work?
'Button moves selected listbox item up
Private Sub btnUp_Lanemgr_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnUp_Lanemgr.Click
[Code]....
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Feb 12, 2011
I'm having some difficulty with a sorted & grouped listbox in WPF vb.net 3.5 that has an items source bound to an ObservableCollection.
What I want to be able to do is to retrieve a piece of data from the ObservableCollection items source depending on what item in the listbox the user has selected.I've almost got it working but because the listbox is sorted it does not match the index of the items source.
[code]...
As I previously mentioned, because the lstBox is sorted and also grouped the index's don't match up.Does anyone know how I can get the correct information I want from the List Source depending on the selected item in the list box?
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Oct 13, 2011
How someone would select an item from a list box and click a button and have that item go into another listbox with it's price? I seem to be stuck on this part.
Here's my code:
I want to select the first option from the first listbox and I want to put it into another listbox along with the price of that item on the same line in the listbox. I can't seem to figure out how to that.
Public Class Form1
Const dcmPRICE_STRESS As Decimal = CDec(595.0)
Const dcmPRICE_TIME_MANAGMENT As Decimal = 695
[CODE]...
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Feb 13, 2011
my program downloads into a combobox every item(line) that is in a text file located on a server.
Every line in the text file ends with "a)" or with "g)".
Now I just want to make 3 radio buttons:
- one that will allow the download in the combobox only the item ending with "g)"
- one that will allow the download in the combobox only the item ending with "a)"
- one that will allow the download in the combobox of both (I already know how to do).
How can I do so?
To download the entire list in the combobox I do:
Dim List As String = client.DownloadString("http://mywebsite.com/mytextfile.txt)Dim lines As String() = List.Split(New String() {ControlChars.CrLf}, StringSplitOptions.RemoveEmptyEntries)ComboBox1.Items.Clear()
ComboBox1.Items.AddRange(lines)
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May 14, 2012
how whould I go about deleteing an item from a listbox and it will select the next available item.you know like the treeview control selects the next node if you delete one.
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Mar 23, 2011
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?
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Jun 8, 2011
I am working on an app that is an MDI. When the user clicks a button on an MDI child, I want to "disable" the current MDI child (and only the current child window), open a new window that has control, and then re-enable the child window when the new window is closed...very similar to using showDialog(). The thing I an having trouble figuring out is how to allow the other child windows to be active at the same time as when the new window is open. If I use the showDialog(), all child windows are disabled
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Aug 10, 2011
I'm wondering if there is a way to write a code that affects every single TextBox in my application... I have about 12 Forms that are all inherited from my BaseForm. I want to affect all of the TextBoxes in those 12 forms The idea is, that every single TextBox would change the text in it to Bold, if the text is not 0 or 0,0 or 0,00. Let's say there is a Form that has about 100 textboxes to indicate different values. Every TextBox that shows the value 0 should be in normal font, but every TextBox that shows any other value should be bolded...
Or should I just do a public function that is called every time a textbox changes value? (Not quite sure how to do this either...)
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Jun 14, 2011
I've tried to make a program whereby the input affects a variable.
If Label1.Text = "1" Then
store.number1 += 1
End If
[Code]....
I was just wondering if anyone knew of a better way of doing this, as I have to go up to 6 labels, each containing 100 numbers.
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Jun 18, 2009
i want to stop accepting form drop down listbox if certrain criteria is not met [code]how i can cancel the selection of drop down list?
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May 5, 2010
i want to search item A (from a list of X items) in list B but i want to get the item not found example Search ITEM A in LIST B if not found then return a print....if found continue with ITEM B..and so on.
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May 15, 2009
I'm up to writing user input to a text file. It's the same app as I referred to in a previous post where I was having difficulty reading data.[code]...
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Oct 8, 2011
I am currently creating the classic Pong game in VB.Net. I have a few questions regarding angle of approach and rebound.
For example if the ball hits the wall at roughly a 30 degree angle then it should roughly bounce off the wall at ~30 degrees. This is my first query, how would I achieve this as I cannot figure out how. It is currently bouncing the ball off the wall by altering ballXspeed and ballYspeed by 5 or -5.
My second query is that of the ball hitting the paddle, if the ball is to hit to top 0% - 5% of the paddle it will bounce off at a different angle opposed to if the ball hit the paddle in the 15% - 20% zone of the paddle.
Here is my code in its entirety:
Public Class Form1
Dim ballXSpeed As Single
Dim ballYSpeed As Single
[CODE]...
I understand that you cannot do the work for me and I don't expect you to. Would it be possible for help with the pseudo-logic or a particular area. I forgot to mention that the ball currently bounces off the paddles at a random angle.
Hence:
ballXSpeed = -5
ballYSpeed = New Random(DateTime.Now.Millisecond).Next(-10, 10)
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Jan 11, 2011
I have a List myList of MyObjects. Is it possible to check if myList contains a particular myObject based on a property of myObject in VB.NET? In C#, you'd something similar to this right:
myList.Exists(myObject => myObject.property1 == 3)
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May 30, 2011
I have a List(Of MyObj), and I want to iterate through that list and compare each element to all other elements in the same list, excluding (if possible) the same element. I have a solution that works, but it's slow and uses double For loops. It may possibly have also summoned Cthulhu from his sleep. This below is a sanitized version of what I have:
Dim MyList As New List(Of MyObj)({Obj1, Obj2, Obj3, Obj4, Obj5, Obj6})
If MyList.Count > 0 Then
For i = 0 To (MyList.Count - 1) Step 1
[code]....
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Nov 15, 2011
I want to know how to test the 1st list box if it has items more than the other list box but by one item, here is what i have: If lstInvisibleTv. Items.Count > lstInvisiblePc.Items.Count Then it works good if the lstInvisibleTv list box is greater than the other list box by one but it also works if it is greater the other one by one or more which I do not want. I want it to work just by one.
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Dec 29, 2011
i have a combobox containing countries name and their codes like INDIA:CNT001 then i have a textbox that store the code of country i.e CNT001(fetching from database) Now i want to match that code with the combobox code so that the combobox is set to that item when i click a button. i m using vb.net and sql server as database.
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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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Mar 18, 2008
How Do I show the values from the dataset to the text box based on the selection from the combobox list i already populated the combobox my code is. [code]
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Nov 22, 2011
I am trying to add text from a text box into a list box when the radio button unseperated list is selected. i can do this easily. howeve ri now wnat to put text into the list box from the text box when the sepereated by comma radio button is selected
[Code]...
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May 27, 2012
I have a program that will compare an array of grocery list items glist and an array of coupon item clist.When I compare the two and if there is a match somewhere in the array I want to have a picturebox visible.When there is no match, I want the picture box not to be visible. [code] The code seems to work great until I come to the else statement.When the code finds a match it displays the picture box and the msgbox without error, but as soon as the message box is cleared, even though i've input it as an ELSE statement, the picturebox goes false again.Does anyone have any idea of how I can "hold" the picturebox to stay visible while the match between the arrays exists?
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May 25, 2012
Regarding my college project. i'm working on a sales system . i have a form which consist of all the following information( item code , item name , item price , quantity of item ) which is display using a data grid . data input by user using text box and all this information will be stored in a database(sales database) i'm using ms access 2007. the grand total will be displayed in a text box . and amount paid will be input in a text box too , my major problem now is how to i create a reciept that will have all this information of the purcase. i have a reciept button . what the next step ? i dont have any idea how to get the reciept done.
Imports System.Data.OleDb
Public Class Form5
Dim con As New OleDbConnection
[CODE].......................
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Jul 13, 2010
I open a context menu by right clicking it.
It stays open when the cursor leaves it.
I click a main menu item.
The drop down opens at the top left of the screen.
Not under the main menu item I clicked.
I want to search the Internet but can't guess what key words to use.
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