ArcGIS API for Silverlight 动态图层（ArcGISDynamicMapServiceLayer）的显示与隐藏

<esri:ArcGISDynamicMapServiceLayer ID="MyLayer"  Url="http://192.168.0.89/arcgis/rest/services/AnHuiMap/MapServer/"  Initialized="MyLayer_Initialized" />

<!--图层控制-->
<!--<Grid HorizontalAlignment="Right" Margin="0,260,0,0" Width="209" Height="200" VerticalAlignment="Top" >
<Grid.RowDefinitions>
<RowDefinition Height="0.205*"/>
<RowDefinition Height="0.795*"/>
</Grid.RowDefinitions>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="0.837*"/>
<ColumnDefinition Width="0.163*"/>
</Grid.ColumnDefinitions>
<Border x:Name="bShowPicControl" BorderThickness="1"  Cursor="Hand"  Margin="1,0,0,1" Grid.Column="1" Width="33" MouseLeftButtonDown="bShowPicControl_MouseLeftButtonDown" MouseLeftButtonUp="bShowPicControl_MouseLeftButtonUp" Height="34">
<Border.Background>
<ImageBrush ImageSource="Images/Layer_control.png" Stretch="None"/>
</Border.Background>
<ToolTipService.ToolTip>
<TextBlock FontSize="13.333" FontFamily="Microsoft YaHei" >图 层 控 制</TextBlock>
</ToolTipService.ToolTip>
</Border>
<Grid x:Name="grid_control" Margin="0,1,0,0" Grid.RowSpan="2" Width="175" Height="199" Visibility="Collapsed">
<Grid Height="34" Background="#FFF3F3F3" Margin="0" Width="174" VerticalAlignment="Top" d:LayoutOverrides="Height">
<Border BorderBrush="#FF0E529B" BorderThickness="1" CornerRadius="5" Height="34" Width="174">
<StackPanel Orientation="Horizontal" Width="164" Height="32">
<CheckBox x:Name="cb_ZM" Content="站 名" Margin="2,5,0,5" Width="54" FontSize="14.667" Cursor="Hand" FontFamily="Microsoft YaHei" VerticalAlignment="Center" HorizontalAlignment="Center" Height="18"  Checked="cb_ZM_Checked" Unchecked="cb_ZM_Unchecked"/>
<RadioButton x:Name="rb1" Width="54" Margin="0,5" IsChecked="True" FontSize="14.667" Content="数 据" Height="18" GroupName="gn_group" Cursor="Hand" FontFamily="Microsoft YaHei" HorizontalAlignment="Center" VerticalAlignment="Center" Click="rb_Click"/>
<RadioButton x:Name="rb2" Width="54" Margin="0,5" FontSize="14.667" Content="站 码" GroupName="gn_group" Cursor="Hand" FontFamily="Microsoft YaHei" HorizontalAlignment="Center" VerticalAlignment="Center" Click="rb_Click" Height="18"/>
</StackPanel>
</Border>
</Grid>
<Border Height="163" Margin="0,36,0,0"
Width="175" d:LayoutOverrides="GridBox" BorderBrush="#FF0E529B" CornerRadius="5" BorderThickness="1" >
<ListBox ItemsSource="{Binding Layers.[MyLayer].Layers, ElementName=myMap}"
BorderBrush="{x:Null}" FontSize="13.333" FontFamily="Microsoft YaHei" Width="173" Height="161">
<ListBox.ItemTemplate>
<DataTemplate>
<CheckBox Margin="2"
x:Name="MyLayer"
Content="{Binding Name}"
IsChecked="{Binding DefaultVisibility}"
Tag="{Binding ID}"
ClickMode="Press"
Click="CheckBox_Click" />
</DataTemplate>
</ListBox.ItemTemplate>
</ListBox>
</Border>
</Grid>
</Grid>-->

#region 图层控制显示与隐藏

private void MyLayer_Initialized(object sender, EventArgs e)
{
ESRI.ArcGIS.Client.ArcGISDynamicMapServiceLayer dynamicServiceLayer =
sender as ESRI.ArcGIS.Client.ArcGISDynamicMapServiceLayer;
if (dynamicServiceLayer.VisibleLayers == null)
dynamicServiceLayer.VisibleLayers = GetDefaultVisibleLayers(dynamicServiceLayer);
}

private int[] GetDefaultVisibleLayers(ESRI.ArcGIS.Client.ArcGISDynamicMapServiceLayer dynamicService)
{
List<int> visibleLayerIDList = new List<int>();

ESRI.ArcGIS.Client.LayerInfo[] layerInfoArray = dynamicService.Layers;

for (int index = 0; index < layerInfoArray.Length; index++)
{
if (layerInfoArray[index].DefaultVisibility)
visibleLayerIDList.Add(index);
}
return visibleLayerIDList.ToArray();
}

private void CheckBox_Click(object sender, RoutedEventArgs e)
{
CheckBox tickedCheckBox = sender as CheckBox;

string serviceName = tickedCheckBox.Name;
bool visible = (bool)tickedCheckBox.IsChecked;

int layerIndex = (int)tickedCheckBox.Tag;

ESRI.ArcGIS.Client.ArcGISDynamicMapServiceLayer dynamicServiceLayer = myMap.Layers[serviceName] as
ESRI.ArcGIS.Client.ArcGISDynamicMapServiceLayer;

List<int> visibleLayerList =
dynamicServiceLayer.VisibleLayers != null
? dynamicServiceLayer.VisibleLayers.ToList() : new List<int>();

if (visible)
{
if (!visibleLayerList.Contains(layerIndex))
visibleLayerList.Add(layerIndex);
}
else
{
if (visibleLayerList.Contains(layerIndex))
visibleLayerList.Remove(layerIndex);
}

dynamicServiceLayer.VisibleLayers = visibleLayerList.ToArray();
}

#endregion