Change The Item Value Or Text Of Combobox Control At Run Time?

May 15, 2012

What I to do is really simple. I want to add a group of text boxes in my VB net application. note that the number of text box only can be known at run time.

I want to give default value to this group of text boxes. At run time, users can input text and change the text for each item.

How can I do this? Is there a control to do this?

What I can remember is ComboBox control. However, I only can display the item text and do not know how to change the text for each item.


Select An Item Of A Combobox To Change A Control Property?

Apr 7, 2010

I can't seem to get this to work so I need a fresh set of eyes on it!  I have a combobox dropdown with some names.  When I select a certain name from the list, I want it to change the textbox property.I tried :if combobox1.selecteditem= "edward" thentextbox1.maxlength= "2"

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Apr 10, 2012

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Oct 31, 2009

Just started on

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Dim aa As String
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As


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For combobox A, if user chooses item 1, the list of combobox B should be updated accordingly. I think this is quite common on a lot of applications. But I do not know to implement it. I even do not know the keyword to search for the relevant property or event handler.

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Dec 29, 2011

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I am trying to change the image in a picture box using a combobox with item collections 0-8.When I run the program no matter what I choose in the combobox it selects case 0 and willnot change. code below for selected index changed.
Sub ComboBox1_SelectedIndexChanged(ByVal
sender As System.Object,
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May 8, 2009

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I've never worked with any form of color in comboboxes before and this is my first attempt at the drawitem event.

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Oct 14, 2009

the below statment is right 100% but what i need is to change the word mobinil when the user choose another item from the combobox

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"select * from warehouse where x value ='" + ComboBox2.Text + "'" is that possible ?

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Nov 4, 2009

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Feb 20, 2012

I have a tab control application, each tab loads a particular user control and each of those user controls will then add other user controls that are used amongst other the user controls.  For example, I have an "ucQuotes" page and an "ucInventory" page, when the specific tab is selected, the "uc****" user control is loaded on that page, and in the case of "ucQuotes" and "ucInventory" they both use a control called "ucPartNumber"; a user control consisting of a combobox, textbox, and button.  I have no issues reusing the shared user controls, in this case.  My problem arises with my "ucQuickPrice" control, as it is always present at the bottom of the tab control form (separate from the tabcontrol, but on the same form), and it too uses ucPartnumber.

Here's my issue, as I type into the ucPartnumber combobox, the text I type does not appear in the combobox, it appears in the textbox of the ucPartnumber control that is being used on the tabcontrol page. There are no shared instances of ucPartNumber, nor do I have this issue between typing on one tab page and the text showing on the user control of another tab page.I tried just creating the ucPartNumber controls on the ucQuickPrice control, not adding a new instance of ucPartnumber on the .Load event, and the issue persists. 

The combobox(s) in question are bound programmatically with about 40,000 items, ".datasource = dataset.tablename" not to a bindingsource.  Autocomplete is set to none, I added code to utilize tool tips and the basic combobox filtering functionality.  Is this a bug, or is there something I'm neglecting? I'm about 95% complete with this application, and this just happened today.  I made the decision, to just reuse the ucPartNumber control on the ucQuickPrice control (originallly it's size and orientation would not fit, but I added some coding to detect what parent is adding ucPartNumber and to change its appearance accordingly).  Before, I made this change, I did not have this problem. And, in trying to go back to how I had things set up before the change, the problem will not go away. if the whole control within a control verbage I used is a bit confusing, let me know and I'll try to better explain what is happening.  At this point, I'm going to close and reopen vbexpress, as when I started this ordeal, vb started acting weird and wanted me to save all my work, it usually does this before locking up.

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Feb 12, 2012

Need some direction not looking for code,

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This is what I have so far:


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Jul 15, 2009

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something like??

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Oct 20, 2009

The form has 2 ComboBox and 1 NumericUpDown controls. I would like to change value of NumericUpDown based on selection in ComboBox. For example:

ComboBox1 has three value. for instance, AAA, BBB, CCC
ComboBox2 has three value. for instance, DDD, EEE, FFF

The NumericUpDown should has range 0-6 sum of both ComboBox. For instance, if user select from ComboBox1 AAA and from ComboBox2 EEE the NumericUpDown should display value 5.

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Code File

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Apr 30, 2012

I have a problem with combobox. I set the DrawMode into OwnerDrawVariable so I can draw items seperately with styles, but the characters of the items are now displaying blocks. The block characters are none ASCII. It used to display well but not now and I don't know what caused it to happen. I didn't change my system locale. At the same time, other combobox that have Normal DrawMode displays nicely fine.

My custom drawing code:

e.Graphics.DrawString(combo.Items(e.Index), combo.Font, b2, rect.X, rect.Y)

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Feb 4, 2009

i want to set the current displayed item in combobox by combobox.selectedvalue = valuehere is the code

Combobox.selectedvalue = value
rivate Function populateComboSupplier(ByVal supplierID As Integer) As Boolean
Dim readSupp As New SupplierCRUD


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Feb 27, 2010

How can i get or change the selecteditem in from a webpage combobox in a webbrowser control?

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Aug 5, 2011

l am trying to do this listbox1.selected item.text =textbox1.text.l am using 2010 , that syntax doesn't work.l just want to be able to change an item text in a listbox using a textbox.

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Jul 3, 2009

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I have tried realsing the COM object in my VB.NET Code.

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Jun 18, 2010

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