View and Select Items Using a ComboBox : ComboBox « Windows Presentation Foundation « VB.Net






View and Select Items Using a ComboBox

View and Select Items Using a ComboBox
     
<Window x:Class="WpfApplication1.Window1"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    Title="WPF" Height="100" Width="300">
    <StackPanel>
        <ComboBox Name="comboBox" IsEditable="True" Margin="5" SelectionChanged="ComboBox_SelectionChanged">
            <ComboBoxItem Content="ComboBox Item 1" Selected="ComboBoxItem_Selected" />
            <ComboBoxItem Content="ComboBox Item 2" Selected="ComboBoxItem_Selected" />
            <ComboBoxItem Content="ComboBox Item 3" Selected="ComboBoxItem_Selected" IsSelected="True"/>
            <ComboBoxItem Content="ComboBox Item 4" Selected="ComboBoxItem_Selected" />
            <ComboBoxItem Content="ComboBox Item 5" Selected="ComboBoxItem_Selected" />
        </ComboBox>
        <Button Content="Get Selected" Margin="5" Width="100" Click="Button_Click" />
    </StackPanel>
</Window>

//File:Window.xaml.vb
Imports System
Imports System.Windows
Imports System.Windows.Controls

Namespace WpfApplication1
  Public Partial Class Window1
    Inherits Window
    Public Sub New()
      InitializeComponent()
    End Sub
    Private Sub Button_Click(sender As Object, e As RoutedEventArgs)
      Dim item As ComboBoxItem = TryCast(comboBox.SelectedItem, ComboBoxItem)

      If item IsNot Nothing Then
        MessageBox.Show("Current item: " & Convert.ToString(item.Content), Title)
      ElseIf Not [String].IsNullOrEmpty(comboBox.Text) Then
        MessageBox.Show("Text entered: " + comboBox.Text, Title)
      End If
    End Sub

    Private Sub ComboBox_SelectionChanged(sender As Object, e As SelectionChangedEventArgs)

      If Not IsInitialized Then
        Return
      End If

      Dim item As ComboBoxItem = TryCast(comboBox.SelectedItem, ComboBoxItem)

      If item IsNot Nothing Then
        MessageBox.Show("Selected item: " & Convert.ToString(item.Content), Title)
      End If
    End Sub

    Private Sub ComboBoxItem_Selected(sender As Object, e As RoutedEventArgs)
      If Not IsInitialized Then
        Return
      End If

      Dim item As ComboBoxItem = TryCast(e.OriginalSource, ComboBoxItem)

      If item IsNot Nothing Then
        MessageBox.Show(Convert.ToString(item.Content) & " was selected.", Title)
      End If
    End Sub
  End Class
End Namespace

   
    
    
    
    
  








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