title: Nothing Show inside Stacklayout
body: <p>I' m working in Xamarin forms application ,I'm currently implementing a form contains two parts one is data entering part and other part is a list view Afetr i entered data and saved it should appear in list view ,In debug  i checked ListViewUsers.ItemsSource count is not 0 it has  values , but  listView is not showing  in the form .</p>
  
  <pre><code> &lt;ContentPage.Content&gt;
          &lt;StackLayout&gt;
              &lt;Grid&gt;
              &lt;Grid.RowDefinitions&gt;
                  &lt;RowDefinition Height="500"/&gt;
                  &lt;RowDefinition Height="*"/&gt;
              &lt;/Grid.RowDefinitions&gt;
                  &lt;Grid.ColumnDefinitions&gt;
                      &lt;ColumnDefinition Width="*"/&gt;
                  &lt;/Grid.ColumnDefinitions&gt;
               &lt;StackLayout Grid.Row="0" Grid.Column="0"&gt;
              &lt;Grid x:Name="grid"&gt;
                  &lt;Grid.RowDefinitions&gt;
                  &lt;RowDefinition Height="*"/&gt;
                  &lt;RowDefinition Height="*"/&gt;
                  &lt;RowDefinition Height="*"/&gt;
                  &lt;RowDefinition Height="*"/&gt;
                  &lt;RowDefinition Height="*"/&gt;
                  &lt;RowDefinition Height="*"/&gt;
                  &lt;RowDefinition Height="*"/&gt;
                  &lt;/Grid.RowDefinitions&gt;
              &lt;Grid.ColumnDefinitions&gt;
                  &lt;ColumnDefinition Width="*"/&gt;
                  &lt;ColumnDefinition Width="*"/&gt;
               &lt;/Grid.ColumnDefinitions&gt;
                  &lt;Label x:Name="labelName" Grid.Row="0"  Grid.Column="0" Margin="10" FontSize="6"  VerticalOptions="CenterAndExpand"  HorizontalTextAlignment="Start" Text="Name"/&gt;
                  &lt;Entry  x:Name="textName" Grid.Row="0"  Grid.Column="1"  WidthRequest="100" FontSize="6" VerticalOptions="CenterAndExpand" HorizontalOptions="Start" HorizontalTextAlignment="Start" Text="{Binding Name}"  /&gt;
                  &lt;Label x:Name="labelAge" Grid.Row="1"  Grid.Column="0" Margin="10" FontSize="6"  Text="Age" VerticalOptions="CenterAndExpand" HorizontalTextAlignment="Start" /&gt;
                  &lt;Entry  x:Name="textAge" Grid.Row="1"  Grid.Column="1" WidthRequest="100" FontSize="6" VerticalOptions="CenterAndExpand" HorizontalOptions="Start" HorizontalTextAlignment="Start" Text="{Binding Age}" /&gt;
                  &lt;Label x:Name="labelAddress" Grid.Row="2"  Grid.Column="0" Margin="10" FontSize="6"  Text="Address" VerticalOptions="CenterAndExpand" HorizontalTextAlignment="Start" /&gt;
                  &lt;Entry  x:Name="textAddress" Grid.Row="2"  Grid.Column="1" WidthRequest="100" FontSize="6" VerticalOptions="CenterAndExpand" HorizontalOptions="Start" HorizontalTextAlignment="Start"  Text="{Binding Address}" /&gt;
                  &lt;Label x:Name="labelNICNumber" Grid.Row="3"  Grid.Column="0" Margin="10" FontSize="6" Text="NIC" VerticalOptions="CenterAndExpand" HorizontalTextAlignment="Start" /&gt;
                  &lt;Entry  x:Name="textNIC" Grid.Row="3"  Grid.Column="1" WidthRequest="100" FontSize="6" VerticalOptions="CenterAndExpand" HorizontalOptions="Start" HorizontalTextAlignment="Start" Text="{Binding NIC}" /&gt;
                  &lt;Button Grid.Row="4"  Grid.Column="1" HeightRequest = "30"   VerticalOptions="CenterAndExpand" HorizontalOptions="Start" FontSize="6" Text="Save" Clicked="UserSaveClick" /&gt;
              &lt;/Grid&gt;
          &lt;/StackLayout&gt;
          &lt;StackLayout Grid.Row="1"  Grid.Column="0"&gt;
                      &lt;Label x:Name="labelNICNumber2" Grid.Row="3"  Grid.Column="0" Margin="10" FontSize="6" Text="NIC" VerticalOptions="CenterAndExpand" HorizontalTextAlignment="Start" /&gt;
                      &lt;ListView x:Name="ListViewUsers" SeparatorColor="Transparent"  HasUnevenRows="True" IsVisible="True" IsEnabled="True"&gt;
                  &lt;ListView.ItemTemplate&gt;
                      &lt;DataTemplate&gt;
                          &lt;ViewCell&gt;
                                  &lt;Grid&gt;
                                      &lt;Grid.ColumnDefinitions&gt;
                                          &lt;ColumnDefinition Width="1*" /&gt;
                                          &lt;ColumnDefinition Width="2*" /&gt;
                                          &lt;ColumnDefinition Width="3*" /&gt;
                                          &lt;ColumnDefinition Width="4*" /&gt;
                                      &lt;/Grid.ColumnDefinitions&gt;
  
  
  
                                      &lt;Label 
                                      WidthRequest="20"
                                      HeightRequest="15"
                                      TextColor="Black"
                                      FontFamily="Open Sans"
                                      FontSize="6"          
                                      Text="{Binding Name}"
                                      VerticalOptions="Center"
                                      HorizontalOptions="Start"
                                      Grid.Column="1"/&gt;
  
                                      &lt;Label 
                                      WidthRequest="20"
                                      HeightRequest="15"
                                      TextColor="Black"
                                      FontFamily="Open Sans"
                                      FontSize="10"          
                                      Text="{Binding Age}"
                                      VerticalOptions="Center"
                                      HorizontalOptions="Start"
                                      Grid.Column="2" /&gt;
  
                                       &lt;Label 
                                      WidthRequest="20"
                                      HeightRequest="15"
                                      TextColor="Black"
                                      FontFamily="Open Sans"
                                      FontSize="10"          
                                      Text="{Binding Address}"
                                      VerticalOptions="Center"
                                      HorizontalOptions="Start"
                                       Grid.Column="3" /&gt;
  
  
                                      &lt;Label 
                                      WidthRequest="20"
                                      HeightRequest="15"
                                      TextColor="Black"
                                      FontFamily="Open Sans"
                                      FontSize="10"          
                                      Text="{Binding NIC}"
                                      VerticalOptions="Center"
                                      HorizontalOptions="Start"
                                      Grid.Column="4"/&gt;
                                  &lt;/Grid&gt;
  
                              &lt;/ViewCell&gt;
                      &lt;/DataTemplate&gt;
                  &lt;/ListView.ItemTemplate&gt;
              &lt;/ListView&gt;
          &lt;/StackLayout&gt;
          &lt;/Grid&gt;
       &lt;/StackLayout&gt;
  </code></pre>