我正准备在应用程序中阅读iTunes Music Library XML，但是我不知道如何执行此操作，我想做的是搜索特定的曲目名称作为指定密钥，例如“ Artist”，“专辑”等。是的，我知道如何使用iTunes COM，但是有些曲目信息无法通过它访问，例如，如果曲目为“ Explicit”，则有一个附加键
<key>Explicit</key><true/>
我想做的是搜索特定的曲目名称，并检查它的曲目是否具有显式键。
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple Computer//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
<key>Major Version</key><integer>1</integer>
<key>Minor Version</key><integer>1</integer>
<key>Date</key><date>2014-08-24T05:21:40Z</date>
<key>Application Version</key><string>11.3.1</string>
<key>Features</key><integer>5</integer>
<key>Show Content Ratings</key><true/>
<key>Music Folder</key><string>file://localhost/C:/Users/Mon%20Tolentino/Music/iTunes/iTunes%20Media/</string>
<key>Library Persistent ID</key><string>15CDC06EC711077D</string>
<key>Tracks</key>
<dict>
<key>766</key>
<dict>
<key>Track ID</key><integer>766</integer>
<key>Name</key><string>Say Something</string>
<key>Artist</key><string>A Great Big World</string>
<key>Album Artist</key><string>A Great Big World</string>
<key>Composer</key><string>Ian Axel, Chad Vaccarino, Mike Campbell</string>
<key>Album</key><string>Is There Anybody Out There?</string>
<key>Grouping</key><string>Indie</string>
<key>Genre</key><string>Pop</string>
<key>Kind</key><string>AAC audio file</string>
<key>Size</key><integer>8639959</integer>
<key>Total Time</key><integer>233289</integer>
<key>Disc Number</key><integer>1</integer>
<key>Disc Count</key><integer>1</integer>
<key>Track Number</key><integer>5</integer>
<key>Track Count</key><integer>13</integer>
<key>Year</key><integer>2013</integer>
<key>BPM</key><integer>94</integer>
<key>Date Modified</key><date>2014-05-25T15:58:35Z</date>
<key>Date Added</key><date>2014-05-18T10:09:13Z</date>
<key>Bit Rate</key><integer>256</integer>
<key>Sample Rate</key><integer>44100</integer>
<key>Play Count</key><integer>33</integer>
<key>Play Date</key><integer>3491589574</integer>
<key>Play Date UTC</key><date>2014-08-22T13:59:34Z</date>
<key>Skip Count</key><integer>7</integer>
<key>Skip Date</key><date>2014-08-15T15:15:43Z</date>
<key>Release Date</key><date>2013-11-04T12:00:00Z</date>
<key>Rating</key><integer>60</integer>
<key>Album Rating</key><integer>60</integer>
<key>Album Rating Computed</key><true/>
<key>Artwork Count</key><integer>1</integer>
<key>Sort Album Artist</key><string>A Great Big World</string>
<key>Sort Artist</key><string>A Great Big World</string>
<key>Persistent ID</key><string>50A143EFFA8BEA97</string>
<key>Track Type</key><string>File</string>
<key>Location</key><string>file://localhost/C:/Users/Mon%20Tolentino/Music/iTunes/iTunes%20Media/Music/A%20Great%20Big%20World/Is%20There%20Anybody%20Out%20There_/05%20Say%20Something.m4a</string>
<key>File Folder Count</key><integer>5</integer>
<key>Library Folder Count</key><integer>1</integer>
</dict>
我在网上找到了这个：
Dim itunesLib As XElement = XElement.Load("xmllocation")
Dim itunesPlaylists = From key In itunesLib...<key> Where key.Value = "Name"
Select key.ElementsAfterSelf("string").Value
List1.ItemsSource = itunesPlaylists
但它只会在列表框中列出我的所有曲目，任何人都可以帮助我。
“我要做的是搜索一个特定的曲目名称，并检查它是否具有明确的键。”
您可以使用LINQ to XML表达式来检查特定轨道是否显式，例如：
Dim xml As XElement = XElement.Load("xmllocation")
Dim trackName = "Say Something"
Dim query = From d In xml...<dict>
Where d.Elements("key").Any(Function(name) name.Value = "Name" _
AndAlso (CType(name.NextNode, XElement).Value = trackName)) _
And d.Elements("key").Any(Function(exp) exp.Value = "Explicit" _
AndAlso (CType(exp.NextNode, XElement).Name = "true"))
Dim isExplicit As Boolean = query.Any()
或使用等效于上述LINQ的XPath表达式：
Dim xpath As String = String.Format("//dict[key[.='Name' and following-sibling::string='{0}'] and key[.='Explicit' and following-sibling::true]]", trackName)
Dim isExplicit As Boolean = xml.XPathSelectElements(xpath).Any()
更新 ：
如果您需要检查曲目之外的歌手姓名，则可以在WHERE子句中添加另一个过滤器，如下所示：
Where ....
And d.Elements("key").Any(Function(artist) artist.Value = "Artist" _
AndAlso (CType(exp.NextNode, XElement).Value = "artist name"))
And ...
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我来说两句