C# 选择listview项目时播放歌曲
我希望用户从列表视图中选择一首歌曲并播放它。我尝试了:C# 选择listview项目时播放歌曲,c#,windows-8,C#,Windows 8,我希望用户从列表视图中选择一首歌曲并播放它。我尝试了:listview。SelectedValuePath我得到一个错误:Url为空。我尝试了:listview.SelectedItem.ToString()我得到一个错误:无效的Url。 Listview项文本是文件路径。所以不是这样。 我的完整代码: FileOpenPicker picker = CreateFilePicker(audioExtensions); IReadOnlyList<StorageFile> files
listview。SelectedValuePath
我得到一个错误:Url为空。我尝试了:listview.SelectedItem.ToString()
我得到一个错误:无效的Url。
Listview项文本是文件路径。所以不是这样。
我的完整代码:
FileOpenPicker picker = CreateFilePicker(audioExtensions);
IReadOnlyList<StorageFile> files = await picker.PickMultipleFilesAsync();
if (files != null && files.Count > 0)
{
playlist = new Playlist();
foreach (StorageFile file in files)
{
playlist.Files.Add(file);
StorageFile savedFile =
await playlist.SaveAsAsync(KnownFolders.MusicLibrary,
"Sample",
NameCollisionOption.ReplaceExisting,
PlaylistFormat.WindowsMedia);
this.OutputStatus.Text = savedFile.Name + " was created and saved with "
+ playlist.Files.Count + " files."
+ Environment.NewLine + "At folder: "
+ savedFile.Path;
listview.Items.Add(file.Path.ToString());
}
}
else
{
this.OutputStatus.Text = "No files picked.";
}
第一个错误(无效Url错误)
修复方法是将ListViewItems添加到ListView中:
第二个错误(无效源)
修复方法是从所选ListViewItem中获取内容
:
能否提供listView SelectedItemChanged事件的代码?@robpstein private void listView_SelectionChanged(对象发送方,SelectionChangedEventArgs e){media.Source=new Uri(listView.SelectedValuePath);}@GrantWiney现在可以更新了。@AndrewGrinder MyListViewObject是ListViewItem吗?@AndrewGrinder SelectedValuePath的结果=Url为空…我又遇到一个错误-\uuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuu。url是有效的,因为我的listview显示与音乐文件完全相同的url。本地文件:C:\…尝试将
@
符号添加到任何路径字符串的开头。Likemedia.Source=newURI(@listview.SelectedValuePath)代码>
private void listview_SelectionChanged(object sender, SelectionChangedEventArgs e)
{
media.Source = new Uri(listview.SelectedValuePath);
}