Change List Item Text Dynamically in a ComboBox - vb.net

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?

Related

Listbox Items in VBNET

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?

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.

How to Make combobox first item style as selected so that typing will overwrite that item

What i wanted is after binding combobox, the first item ( first item will be always header like 'Select Item') need to be in selected style, means the blue back color and typing will overwrite that item (autocomplete starts then).
dropdownstyle is dropdown so that user can type inside combobox.
Wanted like this
When the combobox gets focus the text will be selected automatically.
If you want the combobox to get focus right after the binding you can use
ComboBox1.DataSource = oDataSource
ComboBox1.Focus()
There are two methods :
comboBox1.Focus();
or
comboBox1.select(0, comboBox1.text.Length);

Showed text in a NSComboBox with Cocoa

I'm adding an object to a ComboBox using this code :
Ploofed *uped = [Ploofed initwithImageAndURL:(NSImage *)myImage :(NSString *)returnString];
[_OldTrans addItemWithObjectValue:(id)uped];
[_OldTrans selectItemWithObjectValue:(id)uped];
But there is only a blank line in the ComboBox List, how do I set the text of the added object ?
From Apple's docs on combo boxes (Introduction to Combo Boxes):
When you set or retrieve a combo box’s value with the standard NSControl methods (such as setStringValue:, stringValue, setFloatValue:, and floatValue), you’re setting or retrieving the value of the combo box’s text field, and not the current selection of the list. Programmatically changing the combo box’s value does not change what’s selected in the combo box’s list. Conversely, programmatically changing what’s selected in the list does not change the text field’s value. If you want the text field value and the list selection to match up, you need to set them individually.
For example, say you want to initialize the combo box’s list and text field to the list’s third item. This code does that for a combo box that maintains an internal item list:
[myComboBox selectItemAtIndex:2]; // First item is at index 0
[myComboBox setObjectValue:[myComboBox objectValueOfSelectedItem]];

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.