Public Event RotationChanged As Map.RotationChangedEventHandler

public event Map.RotationChangedEventHandler RotationChanged

<Grid x:Name="LayoutRoot">
  
  <!-- Add a Map control with an ArcGISDymanicMapServiceLayer. Specify the use of the ExtentChanged Event. -->
  <esri:Map Background="White" HorizontalAlignment="Left" Name="Map1" VerticalAlignment="Top" 
            Height="426" Width="434" RotationChanged="Map1_RotationChanged" Margin="2,54,0,0">
    <esri:ArcGISDynamicMapServiceLayer Url="http://serverapps.esri.com/ArcGIS/rest/services/California/MapServer" />
  </esri:Map>
  
  <!-- Provide the instructions on how to use the sample code. -->
  <TextBlock Height="40" HorizontalAlignment="Left" Name="TextBlock1" VerticalAlignment="Top" Width="618" TextWrapping="Wrap" Margin="2,9,0,0" 
             Text="Click button to see how the RotationChanged Event provides information for the DependencyPropertyChangedEventArgs." />
  
  <!-- Show the information for the NewValue. -->
  <StackPanel Height="24" HorizontalAlignment="Left" Margin="440,54,0,0" Name="StackPanel1" 
              VerticalAlignment="Top" Width="200" >
    <Grid Name="Grid1">
      <Grid.RowDefinitions>
        <RowDefinition Height="24"/>
      </Grid.RowDefinitions>
      <Grid.ColumnDefinitions>
        <ColumnDefinition Width="65"/>
        <ColumnDefinition Width="160"/>
      </Grid.ColumnDefinitions>
      <sdk:Label Grid.Row="0" Grid.Column="0" Content="NewValue:"/>
      <sdk:Label Grid.Row="0" Grid.Column="1" Name="NewValue"/>
    </Grid>
  </StackPanel>
  
  <!-- Show the information for the Property. -->
  <StackPanel Height="24" HorizontalAlignment="Left" Margin="440,90,0,0" Name="StackPanel2" 
              VerticalAlignment="Top" Width="200" >
    <Grid Name="Grid2">
      <Grid.RowDefinitions>
        <RowDefinition Height="24"/>
      </Grid.RowDefinitions>
      <Grid.ColumnDefinitions>
        <ColumnDefinition Width="65"/>
        <ColumnDefinition Width="160"/>
      </Grid.ColumnDefinitions>
      <sdk:Label Grid.Row="0" Grid.Column="0" Content="OldValue:"/>
      <sdk:Label Grid.Row="0" Grid.Column="1" Name="OldValue"/>
    </Grid>
  </StackPanel>
  
  <!-- Show the information for the OldValue. -->
  <StackPanel Height="24" HorizontalAlignment="Left" Margin="440,130,0,0" Name="StackPanel3" 
              VerticalAlignment="Top" Width="200" >
    <Grid Name="Grid3">
      <Grid.RowDefinitions>
        <RowDefinition Height="24"/>
      </Grid.RowDefinitions>
      <Grid.ColumnDefinitions>
        <ColumnDefinition Width="55"/>
        <ColumnDefinition Width="160"/>
      </Grid.ColumnDefinitions>
      <sdk:Label Grid.Row="0" Grid.Column="0" Content="Property:"/>
      <sdk:Label Grid.Row="0" Grid.Column="1" Name="Property"/>
    </Grid>
  </StackPanel>
  
  <!-- Create a button to demonstrate the Map.RotationChanged Event. -->
  <Button Content="Set a Map.Rotation value" Height="23" HorizontalAlignment="Left" Margin="440,160,0,0" 
          Name="Button1" VerticalAlignment="Top" Width="188" Click="Button1_Click"/>
   
</Grid>

private void Map1_RotationChanged(object sender, DependencyPropertyChangedEventArgs e)
{
  // Use local variables to obtain the e arguments.
  double myNewValue = System.Convert.ToDouble(e.NewValue);
  double myOldValue = System.Convert.ToDouble(e.OldValue);
  System.Windows.DependencyProperty myProperty = e.Property;
  
  // Display the results from the Map.RotationChanged Event.
  NewValue.Content = myNewValue.ToString();
  OldValue.Content = myOldValue.ToString();
  Property.Content = myProperty.ToString();
}
  
private void Button1_Click(object sender, RoutedEventArgs e)
{
  // Change the Map.Rotation Property which will fire the Map.RotationChanged Event
  Map1.Rotation = -45;
}

Private Sub Map1_RotationChanged(ByVal sender As System.Object, ByVal e As System.Windows.DependencyPropertyChangedEventArgs)
  
  ' Use local variables to obtain the e arguments.
  Dim myNewValue As Double = CDbl(e.NewValue)
  Dim myOldValue As Double = CDbl(e.OldValue)
  Dim myProperty As System.Windows.DependencyProperty = e.Property
  
  ' Display the results from the Map.RotationChanged Event.
  NewValue.Content = myNewValue.ToString
  OldValue.Content = myOldValue.ToString
  
  ' Note: The word 'Property' is a reserved word in VB.NET and hence referencing the XAML Label control
  ' called 'Property' must be encased in square brackets ([]).
  [Property].Content = myProperty.ToString
            
End Sub
  
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.Windows.RoutedEventArgs) Handles Button1.Click
  ' Change the Map.Rotation Property which will fire the Map.RotationChanged Event
  Map1.Rotation = -45
End Sub