Null reference exception While Navigating to PlayListItem.
- by Subhen
Hi,
I am trying to play the selected media from PlayList,if the selected index is not zero as below:
if (playList.Items.Count == 0)
{
setPlayList();
if (selectedIndex!= 0)
{
if(custMediaElement.Playlist!=null)
custMediaElement.GoToPlaylistItem(selectedIndex);
}
}
The setPlayLIst method is as below:
private void setPlayList()
{
IEnumerable eLevelData = pMainPage.GetDataFromDictonary(pMainPage.strChildFolderID);
foreach (RMSMedia folderItems in eLevelData)
{
string strmediaURL = folderItems.strMediaFileName;
string strmediaExtension = GetExtension(strmediaURL);
if (strmediaExtension == "wmv" || strmediaExtension == "mp4" || strmediaExtension == "mp3" || strmediaExtension == "mpg")
{
PlaylistItem playListItem = new PlaylistItem();
string thumbSource = folderItems.strAlbumcoverImage;
playListItem.MediaSource = new Uri(strmediaURL, UriKind.RelativeOrAbsolute);
playListItem.Title = folderItems.strAlbumName;
if (!string.IsNullOrEmpty(thumbSource))
playListItem.ThumbSource = new Uri(thumbSource, UriKind.RelativeOrAbsolute);
playList.Items.Add(playListItem);
}
}
custMediaElement.Playlist = playList;
}
But I am getting a Null reference Exception while trying to go to PlayList Item with the help of selected index , as explained in top. This works fine if I don't use custMediaElement.GoToPlaylistItem(selectedIndex); but in that case the Media Player Always plays the 1st Item , No matter , Which ever Song I select from the List Box.
Below is few details from Stack Trace:
ExpressionMediaPlayer.MediaPlayer.DoOpenPlaylistItem(PlaylistItem playlistItem)
at ExpressionMediaPlayer.MediaPlayer.GoToPlaylistItem(Int32 playlistItemIndex)
Thanks,
Subhen
