I am trying to have a RadGridView holding data for all the points visible on the map. As the map moves and zooms the grid needs to update to display only those points actually visible. None of the lists I've been able to put together give me everything on the map but only what is displayed. Do I actually have to find the 4 corners of the visible area and do the calculations myself?
<Grid x:Name="LayoutRoot">
<Grid.RowDefinitions>
<RowDefinition />
<RowDefinition Height="250" />
</Grid.RowDefinitions>
<telerik:RadMap x:Name="radCarrierMap" Center="40.7254808779182,-96.9034722532031" ZoomLevel="4" DistanceUnit="Mile"
ZoomingFinished="radCarrierMap_ZoomingFinished" ZoomChanging="radCarrierMap_ZoomChanging" PanningFinished="radCarrierMap_PanningFinished" CenterChanging="radCarrierMap_CenterChanging">
<telerik:RadMap.Providers>
<telerik:BingMapProvider />
</telerik:RadMap.Providers>
<telerik:InformationLayer x:Name="informationLayer">
<telerik:InformationLayer.ItemTemplate>
<DataTemplate>
<Grid telerik:MapLayer.BaseZoomLevel="{Binding BaseZoomLevel}"
telerik:MapLayer.Location="{Binding ItemLocation}"
telerik:MapLayer.ZoomRange="{Binding ItemZoomRange}">
<Ellipse x:Name="PART_Ellipse"
Width="20"
Height="20"
Stroke="Red"
StrokeThickness="3"
Fill="Transparent">
<ToolTipService.ToolTip>
<ToolTip Content="{Binding Caption}" />
</ToolTipService.ToolTip>
</Ellipse>
</Grid>
</DataTemplate>
</telerik:InformationLayer.ItemTemplate>
</telerik:InformationLayer>
<telerik:DynamicLayer x:Name="dynamicLayer">
<telerik:DynamicLayer.ZoomGridList>
<telerik:ZoomGrid LatitudesCount="2"
LongitudesCount="2"
MinZoom="3" />
<telerik:ZoomGrid LatitudesCount="15"
LongitudesCount="15"
MinZoom="10" />
</telerik:DynamicLayer.ZoomGridList>
</telerik:DynamicLayer>
<telerik:VirtualizationLayer x:Name="vLayer">
</telerik:VirtualizationLayer>
</telerik:RadMap>
<Border BorderThickness="2" BorderBrush="Black" Height="110" Width="300" Margin="10,10,0,3" HorizontalAlignment="Left" VerticalAlignment="Top" >
<StackPanel>
<StackPanel.Background>
<SolidColorBrush Color="Black" Opacity="0.7" />
</StackPanel.Background>
<StackPanel Margin="5,0,5,0">
<TextBlock Margin="0,10,0,0" Foreground="LightGray" Text="Address Search:"/>
<telerik:RadAutoCompleteBox Name="tbAddressSearch" VerticalAlignment="Top"
SelectionMode="Single"
WatermarkContent="Type an address"
TextSearchMode="Contains"
TextSearchPath="Address1"
AutoCompleteMode="Suggest"
DropDownItemTemplate="{StaticResource AddressSearchTemplate}"
SearchTextChanged="tbAddressSearch_SearchTextChanged"
SelectionChanged="tbAddressSearch_SelectionChanged" />
<TextBlock Margin="0,10,0,0" Foreground="LightGray" Text="Search Radius:"/>
<TextBox Name="tbSearchRadius" Width="50" HorizontalAlignment="Left" Text="30" LostFocus="tbSearchRadius_LostFocus" />
</StackPanel>
</StackPanel>
</Border>
<telerik:RadGridView x:Name="TargetCarrierGrid" AutoGenerateColumns="False" Grid.Row="2"
ItemsSource="webService" RowIndicatorVisibility="Collapsed" ShowGroupPanel="False"
SelectionChanged="TargetCarrierGrid_SelectionChanged" CanUserInsertRows="False" IsReadOnly="True">
<telerik:RadGridView.Columns>
<telerik:GridViewDataColumn Header="Name"
DataMemberBinding="{Binding Namek__BackingField}"
IsReadOnly="False" Width="150" TextWrapping="Wrap" >
</telerik:GridViewDataColumn>
<telerik:GridViewDataColumn Header="Miles"
DataMemberBinding="{Binding Milesk__BackingField}"
IsReadOnly="False" Width="60" />
<telerik:GridViewDataColumn Header="Phone"
DataMemberBinding="{Binding Phonek__BackingField}"
IsReadOnly="False" Width="100" TextWrapping="Wrap" />
<telerik:GridViewDataColumn Header="City-State"
DataMemberBinding="{Binding Locationk__BackingField}"
IsReadOnly="False" Width="120" TextWrapping="Wrap" />
</telerik:RadGridView.Columns>
</telerik:RadGridView>
</Grid>
<Grid x:Name="LayoutRoot">
<Grid.RowDefinitions>
<RowDefinition />
<RowDefinition Height="250" />
</Grid.RowDefinitions>
<telerik:RadMap x:Name="radCarrierMap" Center="40.7254808779182,-96.9034722532031" ZoomLevel="4" DistanceUnit="Mile"
ZoomingFinished="radCarrierMap_ZoomingFinished" ZoomChanging="radCarrierMap_ZoomChanging" PanningFinished="radCarrierMap_PanningFinished" CenterChanging="radCarrierMap_CenterChanging">
<telerik:RadMap.Providers>
<telerik:BingMapProvider />
</telerik:RadMap.Providers>
<telerik:InformationLayer x:Name="informationLayer">
<telerik:InformationLayer.ItemTemplate>
<DataTemplate>
<Grid telerik:MapLayer.BaseZoomLevel="{Binding BaseZoomLevel}"
telerik:MapLayer.Location="{Binding ItemLocation}"
telerik:MapLayer.ZoomRange="{Binding ItemZoomRange}">
<Ellipse x:Name="PART_Ellipse"
Width="20"
Height="20"
Stroke="Red"
StrokeThickness="3"
Fill="Transparent">
<ToolTipService.ToolTip>
<ToolTip Content="{Binding Caption}" />
</ToolTipService.ToolTip>
</Ellipse>
</Grid>
</DataTemplate>
</telerik:InformationLayer.ItemTemplate>
</telerik:InformationLayer>
<telerik:DynamicLayer x:Name="dynamicLayer">
<telerik:DynamicLayer.ZoomGridList>
<telerik:ZoomGrid LatitudesCount="2"
LongitudesCount="2"
MinZoom="3" />
<telerik:ZoomGrid LatitudesCount="15"
LongitudesCount="15"
MinZoom="10" />
</telerik:DynamicLayer.ZoomGridList>
</telerik:DynamicLayer>
<telerik:VirtualizationLayer x:Name="vLayer">
</telerik:VirtualizationLayer>
</telerik:RadMap>
<Border BorderThickness="2" BorderBrush="Black" Height="110" Width="300" Margin="10,10,0,3" HorizontalAlignment="Left" VerticalAlignment="Top" >
<StackPanel>
<StackPanel.Background>
<SolidColorBrush Color="Black" Opacity="0.7" />
</StackPanel.Background>
<StackPanel Margin="5,0,5,0">
<TextBlock Margin="0,10,0,0" Foreground="LightGray" Text="Address Search:"/>
<telerik:RadAutoCompleteBox Name="tbAddressSearch" VerticalAlignment="Top"
SelectionMode="Single"
WatermarkContent="Type an address"
TextSearchMode="Contains"
TextSearchPath="Address1"
AutoCompleteMode="Suggest"
DropDownItemTemplate="{StaticResource AddressSearchTemplate}"
SearchTextChanged="tbAddressSearch_SearchTextChanged"
SelectionChanged="tbAddressSearch_SelectionChanged" />
<TextBlock Margin="0,10,0,0" Foreground="LightGray" Text="Search Radius:"/>
<TextBox Name="tbSearchRadius" Width="50" HorizontalAlignment="Left" Text="30" LostFocus="tbSearchRadius_LostFocus" />
</StackPanel>
</StackPanel>
</Border>
<telerik:RadGridView x:Name="TargetCarrierGrid" AutoGenerateColumns="False" Grid.Row="2"
ItemsSource="webService" RowIndicatorVisibility="Collapsed" ShowGroupPanel="False"
SelectionChanged="TargetCarrierGrid_SelectionChanged" CanUserInsertRows="False" IsReadOnly="True">
<telerik:RadGridView.Columns>
<telerik:GridViewDataColumn Header="Name"
DataMemberBinding="{Binding Namek__BackingField}"
IsReadOnly="False" Width="150" TextWrapping="Wrap" >
</telerik:GridViewDataColumn>
<telerik:GridViewDataColumn Header="Miles"
DataMemberBinding="{Binding Milesk__BackingField}"
IsReadOnly="False" Width="60" />
<telerik:GridViewDataColumn Header="Phone"
DataMemberBinding="{Binding Phonek__BackingField}"
IsReadOnly="False" Width="100" TextWrapping="Wrap" />
<telerik:GridViewDataColumn Header="City-State"
DataMemberBinding="{Binding Locationk__BackingField}"
IsReadOnly="False" Width="120" TextWrapping="Wrap" />
</telerik:RadGridView.Columns>
</telerik:RadGridView>
</Grid>