Populate a programmatically made combobox(not in designer)

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Hi All,

I would like to ask if you know how to populate a programatically made combobox. What I mean in programatically is that it is not in the designer. It will mean a lot.

Thank you! :)

Posted 20-Oct-13 22:35pm

Janna Dela Cruz

Updated 21-Oct-13 0:21am

CPallini

v2

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Kenneth Haugland 21-Oct-13 12:49pm

WinForm or WPF?

3 solutions

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Graham Lemon (UK) · Answer 1 · 2013-10-21T06:48:00

Or you can set the Datasource of the combobox and populate it directly from a datatable, for example:

VB

cbCountry.DataSource = CustomSQL.GetCountryList
cbCountry.DisplayMember = "Country"
cbCountry.ValueMember = "Country"
cbCountry.Text = cbCountry.Items(226).ToString

This example populates a combobox with a list of countries from a datatable returned from 'CustomSQL.GetCountryList' and then preselects UK (item 226 in the list) as the text.

CPallini · Answer 2 · 2013-10-20T22:41:00

Solution 2

You populate it calling the Add method of its Items property, e.g.

VB

myComboBox.Items.Add("first item")

Posted 20-Oct-13 22:41pm

CPallini

**Zoltán Zörgő** · Answer 3 · 2013-10-20T22:39:00

Solution 1

What have you tried to get your answer? I assume nothing... since this is a really basic task.
See: http://msdn.microsoft.com/en-us/library/system.windows.forms.combobox.items.aspx?cs-save-lang=1&cs-lang=vb#code-snippet-2[^]

Posted 20-Oct-13 22:39pm

Zoltán Zörgő

Comments

Janna Dela Cruz 21-Oct-13 4:50am

i actually have a working codes that populate combo box from database but when I apply it to my recent project where the combo box is not in the designer it doesn't work. it don't reflect in the combo box although the datasource is not empty.

Zoltán Zörgő 21-Oct-13 4:57am

In general there is no automatic binding between them. But it depends on the technology you use. So, you have either to:
- bind the datasource to the combobox, or
- parse the datasource and add every item one by one