Adding multiple elements to one row c#

Adding multiple elements to one row c#

How can I add multiple element to one row of listview? I'm trying to put
gridview to my main Listview but it doesn't work.
<GridView x:Name="lvMain" ItemsSource="{Binding WallItems}">
<GridView.ItemTemplate>
<DataTemplate>
<Grid Width="300" Height="300" Background="Transparent">
<StackPanel Margin="10,0,0,0">
<GridView x:Name="lvMain3">
<GridView.ItemTemplate>
<DataTemplate>
<Grid Height="50" Width="50"
Background="Red">
<StackPanel Margin="10,0,0,0">
<TextBlock Text="{Binding
Src}"/>
</StackPanel>
</Grid>
</DataTemplate>
</GridView.ItemTemplate>
</GridView>