ComboBox Control For Windows 10

In the following article I will be showing on how to work with a ComboBox control in Universal Windows Apps.

ComboBox represents a selection control that combines a non-editable text box and a drop-down list box that allows users to select an item from a list. We use a ComboBox to present a list of items that a user can select from. When the ComboBox is closed, it either displays the current selection or is empty if there is no selected item. When the ComboBox is opened, it displays the list of selectable items. You can get or set the combo box's selected item using the SelectedItem property

In the following demo we are listing some items in ComboBox from which user can select and the selected will be shown in a TextBlock shown below.

Step 1: Open a blank app and add a ComboBox with some Items and a TextBlock control either from the toolbox or by copying the following XAML ccode into your grid.

  1. <StackPanel Margin="10,10,0,0">  
  2.     <TextBlock Text="Combo Box" FontSize="20"></TextBlock>  
  3.     <StackPanel Margin="10,40,0,0" Orientation="Horizontal">  
  4.         <TextBlock Text="Select an item" Margin="0,5,0,0"></TextBlock>  
  5.         <ComboBox Margin="10,0,0,0" Width="150" SelectionChanged="ComboBox_SelectionChanged">  
  6.             <ComboBoxItem Content="Item 1"></ComboBoxItem>  
  7.             <ComboBoxItem Content="Item 2" IsSelected="True"></ComboBoxItem>  
  8.             <ComboBoxItem Content="Item 3"></ComboBoxItem>  
  9.             <ComboBoxItem Content="Item 4"></ComboBoxItem>  
  10.             <ComboBoxItem Content="Item 5"></ComboBoxItem>  
  11.         </ComboBox>  
  12.     </StackPanel>  
  13.     <TextBlock Name="selectedComboBoxItem" Foreground="Green" Margin="10,15,0,0"></TextBlock>  
  14. </StackPanel>  



Step 2: Add the following code to your cs page to handle the event handlers when any Item is selected.

  1. private void ComboBox_SelectionChanged(object sender, SelectionChangedEventArgs e)  
  2. {  
  3.     if(selectedComboBoxItem == nullreturn;  
  4.     var combo = (ComboBox) sender;  
  5.     var item = (ComboBoxItem) combo.SelectedItem;  
  6.     selectedComboBoxItem.Text = "The selected item is " + item.Content.ToString();  
  7. }  

Step 3: Run your application and check yourself.