Public Property IsLogoVisible As Boolean

public bool IsLogoVisible {get; set;}

<Grid x:Name="LayoutRoot" Background="White">
        
  <!--
  Add an ArcGISTiledMapsServiceLayer to the Map.
  Set the IsLogoVisible = False, meaning the logo will not display.
  -->
  <esri:Map Name="Map1" Height="300" Width="300" HorizontalAlignment="Left" VerticalAlignment="Top"
        IsLogoVisible="False">
    <esri:ArcGISTiledMapServiceLayer Url="http://services.arcgisonline.com/ArcGIS/rest/services/ESRI_StreetMap_World_2D/MapServer"/>
  </esri:Map>
          
  <!--
  Display the Map's IsLogoVisible Property in a TextBlock.
  -->
  <TextBlock Name="TextBlock_IsLogoVisible" Height="23" HorizontalAlignment="Left" Margin="306,12,0,0"  
             Text="{Binding ElementName=Map1, Path=IsLogoVisible}" VerticalAlignment="Top" />
</Grid>

// A Map Control (named myMap) was previously added in to the project either in XAML or code-behind.
            
public void SetLogoVisibleFalse(ESRI.ArcGIS.Client.Map myMap)
{
  
  // Clear out any existing layers.
  myMap.Layers.Clear();
  
  // Add an ArcGISTiledMapsServiceLayer to the Map.
  ESRI.ArcGIS.Client.ArcGISTiledMapServiceLayer myArcGISTiledMapServiceLayer = new ESRI.ArcGIS.Client.ArcGISTiledMapServiceLayer();
  myArcGISTiledMapServiceLayer.Url = "http://services.arcgisonline.com/ArcGIS/rest/services/ESRI_StreetMap_World_2D/MapServer";
  myMap.Layers.Add(myArcGISTiledMapServiceLayer);
  
  // Hide the Map Logo.
  myMap.IsLogoVisible = false;
  
}
            
public void GetIsLogoVisible(ESRI.ArcGIS.Client.Map myMap)
{
  
  // IsLogoVisible (Read/Write)
  bool myBoolean = myMap.IsLogoVisible;
  string myString = null;
  if (myBoolean == true)
  {
    myString = "The Map logo is visible.";
  }
  else
  {
    myString = "The Map logo is invisible.";
  }
  System.Windows.MessageBox.Show(myString);
  
}

' A Map Control (named myMap) was previously added in to the project either in XAML or code-behind.
            
Public Sub SetLogoVisibleFalse(ByVal myMap As ESRI.ArcGIS.Client.Map)
  
  ' Clear out any existing layers.
  myMap.Layers.Clear()
  
  ' Add an ArcGISTiledMapsServiceLayer to the Map.
  Dim myArcGISTiledMapServiceLayer As New ESRI.ArcGIS.Client.ArcGISTiledMapServiceLayer
  myArcGISTiledMapServiceLayer.Url = "http://services.arcgisonline.com/ArcGIS/rest/services/ESRI_StreetMap_World_2D/MapServer"
  myMap.Layers.Add(myArcGISTiledMapServiceLayer)
  
  ' Hide the Map Logo.
  myMap.IsLogoVisible = False
  
End Sub
            
Public Sub GetIsLogoVisible(ByVal myMap As ESRI.ArcGIS.Client.Map)
  
  ' IsLogoVisible (Read/Write)
  Dim myBoolean As Boolean = myMap.IsLogoVisible
  Dim myString As String = Nothing
  If myBoolean = True Then
    myString = "The Map logo is visible."
  Else
    myString = "The Map logo is invisible."
  End If
  System.Windows.MessageBox.Show(myString)
  
End Sub