i need help with adding a custom property to a UserControl. I created a Video Player UserControl and i want to implement it in another application. I have a mediaElement control in my UserControl and i want to access mediaElement.Source from the app where will my UserControl be.
I tried this: [Player.xaml.cs]
using System;
using System.Collections.Generic;
using System.Linq;
using System.Net;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Animation;
using System.Windows.Shapes;
namespace VideoPlayer
{
public partial class Player : UserControl
{
public static readonly DependencyProperty VideoPlayerSourceProperty =
DependencyProperty.Register("VideoPlayerSource", typeof(System.Uri), typeof(Player), null);
public System.Uri VideoPlayerSource
{
get { return mediaElement.Source; }
set { mediaElement.Source = value; }
}
public Player()
{
InitializeComponent();
}
I can't seem to find property in properties box. Any help about this?
You are using incorrect syntax for DependencyProperty CLR wrappers(getter/setter).
Use the following correct code:
public static readonly DependencyProperty VideoPlayerSourceProperty = DependencyProperty.Register("VideoPlayerSource",
typeof(System.Uri), typeof(Player),
new PropertyMetadata(null, (dObj, e) => ((Player)dObj).OnVideoPlayerSourceChanged((System.Uri)e.NewValue)));
public System.Uri VideoPlayerSource {
get { return (System.Uri)GetValue(VideoPlayerSourceProperty); } // !!!
set { SetValue(VideoPlayerSourceProperty, value); } // !!!
}
void OnVideoPlayerSourceChanged(System.Uri source) {
mediaElement.Source = source;
}
You need to change your get and set from the property. Try replacing this:
public System.Uri VideoPlayerSource
{
get { return mediaElement.Source; }
set { mediaElement.Source = value; }
}
With this:
public System.Uri VideoPlayerSource
{
get { return (System.Uri)GetValue(VideoPlayerSourceProperty); }
set { SetValue(VideoPlayerSourceProperty, value); }
}
The technical post webpages of this site follow the CC BY-SA 4.0 protocol. If you need to reprint, please indicate the site URL or the original address.Any question please contact:yoyou2525@163.com.