Feature Layer is not showing the points on the map

Question

I have a simple feature layer. The points will show up if I put the URL in a DynamicMapServiceLayer, but I need to use maptips, so that will not work. Below is my relevant XAML. If you need anymore information or would like to see other parts of my code, let me know. Any help is appreciated.

<esri:Map x:Name="MyMap" Background="#FFE3E3E3" WrapAround="True" MouseClick="MyMap_MouseClick" MouseRightButtonDown="MyMap_MouseRightButtonDown" Extent="-9834972.92753924,4441899.425293319,-9833977.88119163, 4442762.485358352">
                <esri:Map.Layers>

                    <esri:ArcGISTiledMapServiceLayer ID="MyLayer" Url="http://services.arcgisonline.com/ArcGIS/rest/services/World_Street_Map/MapServer" />
                    <!--<esri:ArcGISLocalDynamicMapServiceLayer ID="Calvert_City" Path="C:\Users\jessical\Documents\ArcGIS\CalvertCity_Test.mpk"/>-->
                    <!--<esri:ArcGISDynamicMapServiceLayer  ID="Calvert_City" Url="http://localhost:6080/arcgis/rest/services/CalvertCity_Test_2/MapServer">

                </esri:ArcGISDynamicMapServiceLayer>-->
                    <esri:FeatureLayer ID="Calvert_City" Url="http://localhost:6080/arcgis/rest/services/CalvertCity_Test_2/MapServer" Renderer="{StaticResource MySimpleRenderer}">

                        <esri:FeatureLayer.MapTip>
                            <Border CornerRadius="10" BorderBrush="Black" BorderThickness="2" Margin="0,0,15,15" Background="{StaticResource PanelGradient}">
                                <StackPanel Margin="7">
                                    <TextBlock Text="Content" FontWeight="Bold" Foreground="White"  />
                                    <StackPanel Orientation="Horizontal" >

                                    </StackPanel>
                                </StackPanel>
                            </Border>
                        </esri:FeatureLayer.MapTip>
                    </esri:FeatureLayer>
                </esri:Map.Layers>

Answer 1

With featureLayers I think you need to reference a single layer in a map service or feature service. So, instead of:

http://localhost:6080/arcgis/rest/services/CalvertCity_Test_2/MapServer

try

http://localhost:6080/arcgis/rest/services/CalvertCity_Test_2/MapServer/0

change the "0" at the end to match the layer you are interested in.