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Adding ComboBox Items Directly
Updated on Sep 15, 2025
This tutorial will walk you through the common task of populating RadComboBox with RadComboBoxItems declaratively.
In order to add combobox items you need to use the RadComboBox Items property. The property is of ItemCollection and it contains the populated items. The following example shows how to add items in the ComboBox:
XAML
<telerik:RadComboBox x:Name="radComboBox" Width="200">
<telerik:RadComboBox.Items>
<telerik:RadComboBoxItem Content="Alapattah" />
<telerik:RadComboBoxItem Content="Brickell Avenue" />
<telerik:RadComboBoxItem Content="Downtown Miami" />
<telerik:RadComboBoxItem Content="El Portal" />
<telerik:RadComboBoxItem Content="Cutler Ridge" />
<telerik:RadComboBoxItem Content="Florida City" />
<telerik:RadComboBoxItem Content="Homestead" />
<telerik:RadComboBoxItem Content="Kendall" />
<telerik:RadComboBoxItem Content="Leisure City" />
<telerik:RadComboBoxItem Content="Medley" />
<telerik:RadComboBoxItem Content="Pinecrest" />
</telerik:RadComboBox.Items>
</telerik:RadComboBox>

The RadComboBoxItems can be added also in the code-behind using the following syntax:
C#
var comboBox = new RadComboBox();
comboBox.Items.Add(new RadComboBoxItem() { Content = "Alapattah" });
comboBox.Items.Add(new RadComboBoxItem() { Content = "Homestead" });
comboBox.Items.Add(new RadComboBoxItem() { Content = "Medley" });
comboBox.Items.Add(new RadComboBoxItem() { Content = "Kendall" });
comboBox.Items.Add(new RadComboBoxItem() { Content = "Pinecrest" });
this.hostPanel.Children.Add(comboBox);