How can user control inherit a user control?

Question

I have a user control "Cell" with different methods.
I need 2 other user controls to Inherit from "Cell".
I was told to change "Cell" to a class without a xaml, I did it, and to ensure that the subclass inherits from the base class both in the cs code-behind file and in the first tag of the xaml.
how do I do it?
and, how do I know that now the user controls will have the same base class?

Answer 1

1. Add a new class to your project where you define the Cell class:
namespace WpfApplication22
public class Cell : System.Windows.Controls.UserControl
2. Add a new UserControl to your project and change the base class in both the XAML and the code-behind (sse the parts in bold below):
UserControl2.xaml:
<local:Cell x:Class="WpfApplication22.UserControl2"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
xmlns:local="clr-namespace:WpfApplication22"
mc:Ignorable="d"
d:DesignHeight="300" d:DesignWidth="300">
<Grid>
</Grid>
</local:Cell>
UserControl2.xaml.cs:
public partial class UserControl2 : Cell
public UserControl2() {
InitializeComponent();
3. Add another new UserControl to your project and repeat the steps in 2. above.
That should be it.
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