How to set the checkbox checked when the layer is visible?

DanDong

Hi guys,

I use a listbox to display sublayers and the Itemtemplate of the listbox is checkbox. I want to implement such function that when some actions, like selection or query task, are done, a few layers are set visible and at the same time the checkboxes are checked. Sorry about my confused description....I mean these checkboxes are not checked by clicking, instead they will be checked by codes.

<Border x:Name="AdministrativeTabBorder" Margin="5,0,5,0" Visibility="Collapsed" Grid.Column="0" Grid.Row="4" BorderBrush="#FFFFFFCC">
                <ListBox x:Name="AdministrativeListBox" FontSize="12" Background="#FFFFFFCC" BorderBrush="#FFFFFFCC">
                    <ListBox.ItemTemplate>
                        <DataTemplate>
                            <CheckBox Margin="2" FontSize="9" 
                                        Name="AdministrativeCheckBox"
                                        Content="{Binding Name}"
                                        IsChecked="{Binding DefaultVisibility, Mode=TwoWay}"
                                        Tag="{Binding ID}"
                                        ClickMode="Press"
                                        Click="AdministrativeCheckBox_Click"/>
                        </DataTemplate>
                    </ListBox.ItemTemplate>
                </ListBox>
            </Border>

Here are the actions that layer 20 and 21 are set visible. I want to add some codes here to make checkboxes checked. Any ideas or thoughts? Thank  you! 🙂

dynamicServiceLayer.SetLayerVisibility(21, true);  
dynamicServiceLayer.SetLayerVisibility(20, true);  

DanDong

I think I figured out how to do it. First I copied the layeritem to a LayerItemViewMode array and then cleared the layeritem. In the end I assigned specific layers to the layeritem to form a new layeritem. It sounds like cloning---clearing the original one---pick some from the cloning one and form a new one...

If there is any better idea, I would like to learn from it. Thank you 🙂

void Legend_Refreshed(object sender, ESRI.ArcGIS.Client.Toolkit.Legend.RefreshedEventArgs e)
        {
            ESRI.ArcGIS.Client.Toolkit.Primitives.LayerItemViewModel[] layerIt = new ESRI.ArcGIS.Client.Toolkit.Primitives.LayerItemViewModel[34];
            e.LayerItem.LayerItems.CopyTo(layerIt, 0);
            e.LayerItem.LayerItems.Clear();
            int[] layer_num = new int[20] { 15, 14, 7, 16, 18, 19, 31, 29, 30, 33, 23, 21, 20, 17, 10, 5, 32, 26, 7, 15 };
            for (int i = 0; i < 20; i++)
                e.LayerItem.LayerItems.Add(layerIt.ElementAt(layer_num));         
        }