c# - How to display a downloaded image in WPF window -

I have to download a webcam image via http and refresh it at 10 fps and display it on a WPF window Will happen. Right now I am using this code:

  windows 1 wndMain; Bitmap image img; Dispatcher Timer TMR Refresh; Public WCam (Window 1 wndMain, String Immiguri) {this.wndMain = wndMain; This.MouseLeftButtonDown + = Representative {DragMove (); }; Url = imgery; InitializeComponent (); TmrRefresh = New Dispatcher Timer (TimespainFromMilisceconds (100), Dispatcher Advance. Normal, Refresh, Dispatcher. Current Illustrator); } Private Zero Windows_Loaded (Object Sender, RoutedEventArgs e) {if (url! = "") {Try {img = new bitmapImage ()} img.BeginInit (); Img.CacheOption = BitMapApplication Download; Img.CreateOptions = BitmapCreateOptions.IgnoreImageCache; Img.UriSource = (new URI); Img.EndInit (); } Hold (exception pre) {new WPopup (). Show (ex.Message); } ImgBox.Source = img; TmrRefresh.Start (); }} Public Zero Refresh (Object Sender, EventAurge E) {try {img = new bitmapImage ()} img.BeginInit (); Img.CacheOption = BitMapApplication Download; Img.CreateOptions = BitmapCreateOptions.IgnoreImageCache; Img.UriSource = (new URI); Img.EndInit (); } Hold (exception pre) {new WPopup (). Show (ex.Message); } ImgBox.Source = null; ImgBox.Source = img; }  

It does not show anything, if I increase the timer interval to 1000 then it displays the image, but the image is removed, while it loads the next one I may slow down the window gradually, even if it loads.