Create Image Button using Code-behind

I'm trying to create a three-state Image Button in run time. There is existing method in XAML but I wonder how to do it in code behind (i.e. how to translate the following code to C#)?

<Button>
   <Button.Template>
      <ControlTemplate TargetType="{x:Type Button}">
         <Grid>
            <Image Name="Normal" Source="Resources/Normal.png"/>
            <Image Name="Pressed" Source="Resources/Pressed.png" Visibility="Hidden"/>
            <Image Name="Disabled" Source="Resources/Disabled.png" Visibility="Hidden"/>
         </Grid>
         <ControlTemplate.Triggers>
            <Trigger Property="IsPressed" Value="True">
               <Setter TargetName="Normal" Prop开发者_开发问答erty="Visibility" Value="Hidden"/>
               <Setter TargetName="Pressed" Property="Visibility" Value="Visible"/>
            </Trigger>
            <Trigger Property="IsEnabled" Value="False">
               <Setter TargetName="Normal" Property="Visibility" Value="Hidden"/>
               <Setter TargetName="Disabled" Property="Visibility" Value="Visible"/>
            </Trigger>
         </ControlTemplate.Triggers>
      </ControlTemplate>
   </Button.Template>
</Button>

You add a panel control in your page, then in your code behind use this:

ImageButton imgBtn = new ImageButton();
imgBtn.ID = "image_id";
imgBtn.ImageUrl = "your_image_path";
Panel1.Controls.Add (imgBtn);

Hope this helps