Listbox Items in VBNET - vb.net

I'm working on code that creates a form with two list boxes. In the first list box I'm listing a set of items in a Civil 3D file (wich is already working). In the second list box I want to show all the sub items of the items that are listed in the first list box.
In other words, when I open the form, the first list box contain all the items (already working), when I click or double click one of this items, the second list box will list all the sub items that is in this item that I clicked.
Any ideas in how to do it?

Related

MS Access - FIlter subform based off listbx

I am trying to filter a subform based off a value selected in a listbox.
My list box is called cboCurrentListName and this is populated using a select query
The subform is called Form_subform_ListContents
For the change event for the list box I have the following code, however no filters are applied when its executed.
Me.Form_subform_ListContents.Form.Filter = "[ListName]=" & Me.cboCurrentListName.Value
Me.Form_subform_ListContents.Form.Filter = True
I have also tried using Master/Child links to execute this using the following steps, but this caused an input box to pop up when the fom loaded:
first I set the 'link child fields' option in the properties of the subform to 'ListName' (this is the field name that populates the list box and is present in the subform
then I set the 'link master fields' option in the properties of the subform to 'cboCurrentListName' (the listbox name)
then in the listbox properties I set the control source to 'cboCurrentListName'
The above steps cased an input box to pop up on opening the form (the value typed in here does filter the subform). However I don't want an input box in order to do this, I want to use the listbox.
I have googled this and fried different methods but have had no luck. I am pretty new to access and of the control source sections aren't a strong point of mine, which is why I tried to use the VBA on the event change instead
Any help would be appricaited, I tried a few things and had no luck.
EDIT: When trying the master/hild option I also get an error 'Can'y build a link between unbound forms' if I click the 3 dots in the poperties. SO for the above steps I had to manually type in the otpions.

Comparing two list boxes Vb.net

Listbox 1 contains names of hairdressers and Listbox 2 contains services provided by all of them then in Listbox 3 both the selected hairdresser(only 1 allowed) and and selected services are contained. There is a remove button which removes items from Listbox 3. I want a code for the button that if a hairdresser is removed all services also get removed otherwise only services are removed.
For Each str As String In Hairdresser.lstHairdresser.Items
If Not lstHairdresserAndServices.Items.Contains(str) Then
lstHairdresserAndServices.Items.Clear()
Else
'more code here but above statement never gets true
End If
Next
If the hairdresser is always the first item in the 3rd listbox, all you have to do is check if the selectedindex equals 0. If so, clear the listbox. Otherwise just remove the selected item.
Alternatively, you could search the the 1st listbox for the selected string. If found clear the listbox otherwise remove the selected item.
It is also possible to mark the listbox items when you add then to the listbox. Set the tag property to something like "hairdresser" or "service" and when the remove button is clicked all you have to do is check the tag property.
Finally I would recommend a different approach: Instead of adding the items to the listbox, fill a data structure with the hairdresser's name and services, display this structure in the listbox and when the remove button is clicked compare the selected item to the structure to find out what was selected.

When I add an item to a listbox from a separate listbox, how do I find the string from the item added and search for that string within a text file?

I am working on an online shopping cart application and am quite new to Visual Basic 2010. I have two listbox's one for the current items in stock and another for the cart. When a user clicks an item in stock it is added to the second list box, how do I find the string of this item added so that I can then search for it within a text file and finds its cost using an array of records?
Many thanks in advance

Change List Item Text Dynamically in a ComboBox

I have a combobox that is filled with Site names. When an item is selected, the user is able to edit the site information. If they modify the name of the site, I want to update this in the combobox list. I have seen that I can remove the item, and re-add it, but I don't want to change the order, I only want to change the text of the selected item.
Is there an accesseser that allows the text in a combobox list item to be modified?

Extjs4:Multiselect Option

In my form,i have a list of employees in a combo box and i need to map some employees to particular department.I need to change the combo-box to List box.Scenario is as follows,
1. List A contains all employees.
2. If i click 'Add' button the selected employees must move to list B
and list A must contain remaining employees
.
I searched for List box but i couldn't find in extjs4.
Is there any example or link for multiselect listbox in ext-js4?
Thanks
There is no built-in ListBox widget in ExtJs4. However, Ext.view.View may become an listbox after some manipulations.
Here is an example of such a tuned View. Demos may be found here, here and here (this one looks like just what you need).
You can create two such listboxes and the "add" button. Then assign handler to button which would remove selected item from the first listbox's store and add it to the second's store.